diff options
Diffstat (limited to 'fs')
180 files changed, 6470 insertions, 5589 deletions
diff --git a/fs/Kconfig b/fs/Kconfig index 312393f32948..db5dc1598716 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -233,9 +233,13 @@ if NETWORK_FILESYSTEMS source "fs/nfs/Kconfig" source "fs/nfsd/Kconfig" +config GRACE_PERIOD + tristate + config LOCKD tristate depends on FILE_LOCKING + select GRACE_PERIOD config LOCKD_V4 bool @@ -249,7 +253,7 @@ config NFS_ACL_SUPPORT config NFS_COMMON bool - depends on NFSD || NFS_FS + depends on NFSD || NFS_FS || LOCKD default y source "net/sunrpc/Kconfig" @@ -793,6 +793,8 @@ void exit_aio(struct mm_struct *mm) for (i = 0; i < table->nr; ++i) { struct kioctx *ctx = table->table[i]; + struct completion requests_done = + COMPLETION_INITIALIZER_ONSTACK(requests_done); if (!ctx) continue; @@ -804,7 +806,10 @@ void exit_aio(struct mm_struct *mm) * that it needs to unmap the area, just set it to 0. */ ctx->mmap_size = 0; - kill_ioctx(mm, ctx, NULL); + kill_ioctx(mm, ctx, &requests_done); + + /* Wait until all IO for the context are done. */ + wait_for_completion(&requests_done); } RCU_INIT_POINTER(mm->ioctx_table, NULL); @@ -1111,6 +1116,12 @@ static long aio_read_events_ring(struct kioctx *ctx, tail = ring->tail; kunmap_atomic(ring); + /* + * Ensure that once we've read the current tail pointer, that + * we also see the events that were stored up to the tail. + */ + smp_rmb(); + pr_debug("h%u t%u m%u\n", head, tail, ctx->nr_events); if (head == tail) diff --git a/fs/btrfs/async-thread.c b/fs/btrfs/async-thread.c index 5a201d81049c..fbd76ded9a34 100644 --- a/fs/btrfs/async-thread.c +++ b/fs/btrfs/async-thread.c @@ -22,7 +22,6 @@ #include <linux/list.h> #include <linux/spinlock.h> #include <linux/freezer.h> -#include <linux/workqueue.h> #include "async-thread.h" #include "ctree.h" @@ -55,8 +54,39 @@ struct btrfs_workqueue { struct __btrfs_workqueue *high; }; -static inline struct __btrfs_workqueue -*__btrfs_alloc_workqueue(const char *name, int flags, int max_active, +static void normal_work_helper(struct btrfs_work *work); + +#define BTRFS_WORK_HELPER(name) \ +void btrfs_##name(struct work_struct *arg) \ +{ \ + struct btrfs_work *work = container_of(arg, struct btrfs_work, \ + normal_work); \ + normal_work_helper(work); \ +} + +BTRFS_WORK_HELPER(worker_helper); +BTRFS_WORK_HELPER(delalloc_helper); +BTRFS_WORK_HELPER(flush_delalloc_helper); +BTRFS_WORK_HELPER(cache_helper); +BTRFS_WORK_HELPER(submit_helper); +BTRFS_WORK_HELPER(fixup_helper); +BTRFS_WORK_HELPER(endio_helper); +BTRFS_WORK_HELPER(endio_meta_helper); +BTRFS_WORK_HELPER(endio_meta_write_helper); +BTRFS_WORK_HELPER(endio_raid56_helper); +BTRFS_WORK_HELPER(rmw_helper); +BTRFS_WORK_HELPER(endio_write_helper); +BTRFS_WORK_HELPER(freespace_write_helper); +BTRFS_WORK_HELPER(delayed_meta_helper); +BTRFS_WORK_HELPER(readahead_helper); +BTRFS_WORK_HELPER(qgroup_rescan_helper); +BTRFS_WORK_HELPER(extent_refs_helper); +BTRFS_WORK_HELPER(scrub_helper); +BTRFS_WORK_HELPER(scrubwrc_helper); +BTRFS_WORK_HELPER(scrubnc_helper); + +static struct __btrfs_workqueue * +__btrfs_alloc_workqueue(const char *name, int flags, int max_active, int thresh) { struct __btrfs_workqueue *ret = kzalloc(sizeof(*ret), GFP_NOFS); @@ -232,13 +262,11 @@ static void run_ordered_work(struct __btrfs_workqueue *wq) spin_unlock_irqrestore(lock, flags); } -static void normal_work_helper(struct work_struct *arg) +static void normal_work_helper(struct btrfs_work *work) { - struct btrfs_work *work; struct __btrfs_workqueue *wq; int need_order = 0; - work = container_of(arg, struct btrfs_work, normal_work); /* * We should not touch things inside work in the following cases: * 1) after work->func() if it has no ordered_free @@ -262,7 +290,7 @@ static void normal_work_helper(struct work_struct *arg) trace_btrfs_all_work_done(work); } -void btrfs_init_work(struct btrfs_work *work, +void btrfs_init_work(struct btrfs_work *work, btrfs_work_func_t uniq_func, btrfs_func_t func, btrfs_func_t ordered_func, btrfs_func_t ordered_free) @@ -270,7 +298,7 @@ void btrfs_init_work(struct btrfs_work *work, work->func = func; work->ordered_func = ordered_func; work->ordered_free = ordered_free; - INIT_WORK(&work->normal_work, normal_work_helper); + INIT_WORK(&work->normal_work, uniq_func); INIT_LIST_HEAD(&work->ordered_list); work->flags = 0; } diff --git a/fs/btrfs/async-thread.h b/fs/btrfs/async-thread.h index 9c6b66d15fb0..e9e31c94758f 100644 --- a/fs/btrfs/async-thread.h +++ b/fs/btrfs/async-thread.h @@ -19,12 +19,14 @@ #ifndef __BTRFS_ASYNC_THREAD_ #define __BTRFS_ASYNC_THREAD_ +#include <linux/workqueue.h> struct btrfs_workqueue; /* Internal use only */ struct __btrfs_workqueue; struct btrfs_work; typedef void (*btrfs_func_t)(struct btrfs_work *arg); +typedef void (*btrfs_work_func_t)(struct work_struct *arg); struct btrfs_work { btrfs_func_t func; @@ -38,11 +40,35 @@ struct btrfs_work { unsigned long flags; }; +#define BTRFS_WORK_HELPER_PROTO(name) \ +void btrfs_##name(struct work_struct *arg) + +BTRFS_WORK_HELPER_PROTO(worker_helper); +BTRFS_WORK_HELPER_PROTO(delalloc_helper); +BTRFS_WORK_HELPER_PROTO(flush_delalloc_helper); +BTRFS_WORK_HELPER_PROTO(cache_helper); +BTRFS_WORK_HELPER_PROTO(submit_helper); +BTRFS_WORK_HELPER_PROTO(fixup_helper); +BTRFS_WORK_HELPER_PROTO(endio_helper); +BTRFS_WORK_HELPER_PROTO(endio_meta_helper); +BTRFS_WORK_HELPER_PROTO(endio_meta_write_helper); +BTRFS_WORK_HELPER_PROTO(endio_raid56_helper); +BTRFS_WORK_HELPER_PROTO(rmw_helper); +BTRFS_WORK_HELPER_PROTO(endio_write_helper); +BTRFS_WORK_HELPER_PROTO(freespace_write_helper); +BTRFS_WORK_HELPER_PROTO(delayed_meta_helper); +BTRFS_WORK_HELPER_PROTO(readahead_helper); +BTRFS_WORK_HELPER_PROTO(qgroup_rescan_helper); +BTRFS_WORK_HELPER_PROTO(extent_refs_helper); +BTRFS_WORK_HELPER_PROTO(scrub_helper); +BTRFS_WORK_HELPER_PROTO(scrubwrc_helper); +BTRFS_WORK_HELPER_PROTO(scrubnc_helper); + struct btrfs_workqueue *btrfs_alloc_workqueue(const char *name, int flags, int max_active, int thresh); -void btrfs_init_work(struct btrfs_work *work, +void btrfs_init_work(struct btrfs_work *work, btrfs_work_func_t helper, btrfs_func_t func, btrfs_func_t ordered_func, btrfs_func_t ordered_free); diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h index 43527fd78825..56b8522d5767 100644 --- a/fs/btrfs/btrfs_inode.h +++ b/fs/btrfs/btrfs_inode.h @@ -234,8 +234,17 @@ static inline int btrfs_inode_in_log(struct inode *inode, u64 generation) BTRFS_I(inode)->last_sub_trans <= BTRFS_I(inode)->last_log_commit && BTRFS_I(inode)->last_sub_trans <= - BTRFS_I(inode)->root->last_log_commit) - return 1; + BTRFS_I(inode)->root->last_log_commit) { + /* + * After a ranged fsync we might have left some extent maps + * (that fall outside the fsync's range). So return false + * here if the list isn't empty, to make sure btrfs_log_inode() + * will be called and process those extent maps. + */ + smp_mb(); + if (list_empty(&BTRFS_I(inode)->extent_tree.modified_extents)) + return 1; + } return 0; } diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c index da775bfdebc9..a2e90f855d7d 100644 --- a/fs/btrfs/delayed-inode.c +++ b/fs/btrfs/delayed-inode.c @@ -1395,8 +1395,8 @@ static int btrfs_wq_run_delayed_node(struct btrfs_delayed_root *delayed_root, return -ENOMEM; async_work->delayed_root = delayed_root; - btrfs_init_work(&async_work->work, btrfs_async_run_delayed_root, - NULL, NULL); + btrfs_init_work(&async_work->work, btrfs_delayed_meta_helper, + btrfs_async_run_delayed_root, NULL, NULL); async_work->nr = nr; btrfs_queue_work(root->fs_info->delayed_workers, &async_work->work); diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index d0ed9e664f7d..a1d36e62179c 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -39,7 +39,6 @@ #include "btrfs_inode.h" #include "volumes.h" #include "print-tree.h" -#include "async-thread.h" #include "locking.h" #include "tree-log.h" #include "free-space-cache.h" @@ -693,35 +692,41 @@ static void end_workqueue_bio(struct bio *bio, int err) { struct end_io_wq *end_io_wq = bio->bi_private; struct btrfs_fs_info *fs_info; + struct btrfs_workqueue *wq; + btrfs_work_func_t func; fs_info = end_io_wq->info; end_io_wq->error = err; - btrfs_init_work(&end_io_wq->work, end_workqueue_fn, NULL, NULL); if (bio->bi_rw & REQ_WRITE) { - if (end_io_wq->metadata == BTRFS_WQ_ENDIO_METADATA) - btrfs_queue_work(fs_info->endio_meta_write_workers, - &end_io_wq->work); - else if (end_io_wq->metadata == BTRFS_WQ_ENDIO_FREE_SPACE) - btrfs_queue_work(fs_info->endio_freespace_worker, - &end_io_wq->work); - else if (end_io_wq->metadata == BTRFS_WQ_ENDIO_RAID56) - btrfs_queue_work(fs_info->endio_raid56_workers, - &end_io_wq->work); - else - btrfs_queue_work(fs_info->endio_write_workers, - &end_io_wq->work); + if (end_io_wq->metadata == BTRFS_WQ_ENDIO_METADATA) { + wq = fs_info->endio_meta_write_workers; + func = btrfs_endio_meta_write_helper; + } else if (end_io_wq->metadata == BTRFS_WQ_ENDIO_FREE_SPACE) { + wq = fs_info->endio_freespace_worker; + func = btrfs_freespace_write_helper; + } else if (end_io_wq->metadata == BTRFS_WQ_ENDIO_RAID56) { + wq = fs_info->endio_raid56_workers; + func = btrfs_endio_raid56_helper; + } else { + wq = fs_info->endio_write_workers; + func = btrfs_endio_write_helper; + } } else { - if (end_io_wq->metadata == BTRFS_WQ_ENDIO_RAID56) - btrfs_queue_work(fs_info->endio_raid56_workers, - &end_io_wq->work); - else if (end_io_wq->metadata) - btrfs_queue_work(fs_info->endio_meta_workers, - &end_io_wq->work); - else - btrfs_queue_work(fs_info->endio_workers, - &end_io_wq->work); + if (end_io_wq->metadata == BTRFS_WQ_ENDIO_RAID56) { + wq = fs_info->endio_raid56_workers; + func = btrfs_endio_raid56_helper; + } else if (end_io_wq->metadata) { + wq = fs_info->endio_meta_workers; + func = btrfs_endio_meta_helper; + } else { + wq = fs_info->endio_workers; + func = btrfs_endio_helper; + } } + + btrfs_init_work(&end_io_wq->work, func, end_workqueue_fn, NULL, NULL); + btrfs_queue_work(wq, &end_io_wq->work); } /* @@ -828,7 +833,7 @@ int btrfs_wq_submit_bio(struct btrfs_fs_info *fs_info, struct inode *inode, async->submit_bio_start = submit_bio_start; async->submit_bio_done = submit_bio_done; - btrfs_init_work(&async->work, run_one_async_start, + btrfs_init_work(&async->work, btrfs_worker_helper, run_one_async_start, run_one_async_done, run_one_async_free); async->bio_flags = bio_flags; @@ -3450,7 +3455,8 @@ static int write_all_supers(struct btrfs_root *root, int max_mirrors) btrfs_set_stack_device_generation(dev_item, 0); btrfs_set_stack_device_type(dev_item, dev->type); btrfs_set_stack_device_id(dev_item, dev->devid); - btrfs_set_stack_device_total_bytes(dev_item, dev->total_bytes); + btrfs_set_stack_device_total_bytes(dev_item, + dev->disk_total_bytes); btrfs_set_stack_device_bytes_used(dev_item, dev->bytes_used); btrfs_set_stack_device_io_align(dev_item, dev->io_align); btrfs_set_stack_device_io_width(dev_item, dev->io_width); diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 102ed3143976..3efe1c3877bf 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -552,7 +552,8 @@ static int cache_block_group(struct btrfs_block_group_cache *cache, caching_ctl->block_group = cache; caching_ctl->progress = cache->key.objectid; atomic_set(&caching_ctl->count, 1); - btrfs_init_work(&caching_ctl->work, caching_thread, NULL, NULL); + btrfs_init_work(&caching_ctl->work, btrfs_cache_helper, + caching_thread, NULL, NULL); spin_lock(&cache->lock); /* @@ -2749,8 +2750,8 @@ int btrfs_async_run_delayed_refs(struct btrfs_root *root, async->sync = 0; init_completion(&async->wait); - btrfs_init_work(&async->work, delayed_ref_async_start, - NULL, NULL); + btrfs_init_work(&async->work, btrfs_extent_refs_helper, + delayed_ref_async_start, NULL, NULL); btrfs_queue_work(root->fs_info->extent_workers, &async->work); @@ -3586,13 +3587,7 @@ static u64 get_restripe_target(struct btrfs_fs_info *fs_info, u64 flags) */ static u64 btrfs_reduce_alloc_profile(struct btrfs_root *root, u64 flags) { - /* - * we add in the count of missing devices because we want - * to make sure that any RAID levels on a degraded FS - * continue to be honored. - */ - u64 num_devices = root->fs_info->fs_devices->rw_devices + - root->fs_info->fs_devices->missing_devices; + u64 num_devices = root->fs_info->fs_devices->rw_devices; u64 target; u64 tmp; @@ -8440,13 +8435,7 @@ static u64 update_block_group_flags(struct btrfs_root *root, u64 flags) if (stripped) return extended_to_chunk(stripped); - /* - * we add in the count of missing devices because we want - * to make sure that any RAID levels on a degraded FS - * continue to be honored. - */ - num_devices = root->fs_info->fs_devices->rw_devices + - root->fs_info->fs_devices->missing_devices; + num_devices = root->fs_info->fs_devices->rw_devices; stripped = BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6 | diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 3e11aab9f391..af0359dcf337 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2532,6 +2532,7 @@ static void end_bio_extent_readpage(struct bio *bio, int err) test_bit(BIO_UPTODATE, &bio->bi_flags); if (err) uptodate = 0; + offset += len; continue; } } @@ -4207,8 +4208,8 @@ int extent_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, return -ENOMEM; path->leave_spinning = 1; - start = ALIGN(start, BTRFS_I(inode)->root->sectorsize); - len = ALIGN(len, BTRFS_I(inode)->root->sectorsize); + start = round_down(start, BTRFS_I(inode)->root->sectorsize); + len = round_up(max, BTRFS_I(inode)->root->sectorsize) - start; /* * lookup the last file extent. We're not using i_size here diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index d3afac292d67..ff1cc0399b9a 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1840,7 +1840,15 @@ int btrfs_release_file(struct inode *inode, struct file *filp) { if (filp->private_data) btrfs_ioctl_trans_end(filp); - filemap_flush(inode->i_mapping); + /* + * ordered_data_close is set by settattr when we are about to truncate + * a file from a non-zero size to a zero size. This tries to + * flush down new bytes that may have been written if the + * application were using truncate to replace a file in place. + */ + if (test_and_clear_bit(BTRFS_INODE_ORDERED_DATA_CLOSE, + &BTRFS_I(inode)->runtime_flags)) + filemap_flush(inode->i_mapping); return 0; } @@ -1958,7 +1966,7 @@ int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) btrfs_init_log_ctx(&ctx); - ret = btrfs_log_dentry_safe(trans, root, dentry, &ctx); + ret = btrfs_log_dentry_safe(trans, root, dentry, start, end, &ctx); if (ret < 0) { /* Fallthrough and commit/free transaction. */ ret = 1; @@ -2088,10 +2096,9 @@ static int fill_holes(struct btrfs_trans_handle *trans, struct inode *inode, goto out; } - if (hole_mergeable(inode, leaf, path->slots[0]+1, offset, end)) { + if (hole_mergeable(inode, leaf, path->slots[0], offset, end)) { u64 num_bytes; - path->slots[0]++; key.offset = offset; btrfs_set_item_key_safe(root, path, &key); fi = btrfs_item_ptr(leaf, path->slots[0], @@ -2216,7 +2223,7 @@ static int btrfs_punch_hole(struct inode *inode, loff_t offset, loff_t len) goto out_only_mutex; } - lockstart = round_up(offset , BTRFS_I(inode)->root->sectorsize); + lockstart = round_up(offset, BTRFS_I(inode)->root->sectorsize); lockend = round_down(offset + len, BTRFS_I(inode)->root->sectorsize) - 1; same_page = ((offset >> PAGE_CACHE_SHIFT) == @@ -2277,7 +2284,7 @@ static int btrfs_punch_hole(struct inode *inode, loff_t offset, loff_t len) tail_start + tail_len, 0, 1); if (ret) goto out_only_mutex; - } + } } } diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 03708ef3deef..016c403bfe7e 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -778,8 +778,12 @@ retry: ins.offset, BTRFS_ORDERED_COMPRESSED, async_extent->compress_type); - if (ret) + if (ret) { + btrfs_drop_extent_cache(inode, async_extent->start, + async_extent->start + + async_extent->ram_size - 1, 0); goto out_free_reserve; + } /* * clear dirty, set writeback and unlock the pages. @@ -971,14 +975,14 @@ static noinline int cow_file_range(struct inode *inode, ret = btrfs_add_ordered_extent(inode, start, ins.objectid, ram_size, cur_alloc_size, 0); if (ret) - goto out_reserve; + goto out_drop_extent_cache; if (root->root_key.objectid == BTRFS_DATA_RELOC_TREE_OBJECTID) { ret = btrfs_reloc_clone_csums(inode, start, cur_alloc_size); if (ret) - goto out_reserve; + goto out_drop_extent_cache; } if (disk_num_bytes < cur_alloc_size) @@ -1006,6 +1010,8 @@ static noinline int cow_file_range(struct inode *inode, out: return ret; +out_drop_extent_cache: + btrfs_drop_extent_cache(inode, start, start + ram_size - 1, 0); out_reserve: btrfs_free_reserved_extent(root, ins.objectid, ins.offset, 1); out_unlock: @@ -1096,8 +1102,10 @@ static int cow_file_range_async(struct inode *inode, struct page *locked_page, async_cow->end = cur_end; INIT_LIST_HEAD(&async_cow->extents); - btrfs_init_work(&async_cow->work, async_cow_start, - async_cow_submit, async_cow_free); + btrfs_init_work(&async_cow->work, + btrfs_delalloc_helper, + async_cow_start, async_cow_submit, + async_cow_free); nr_pages = (cur_end - start + PAGE_CACHE_SIZE) >> PAGE_CACHE_SHIFT; @@ -1881,7 +1889,8 @@ static int btrfs_writepage_start_hook(struct page *page, u64 start, u64 end) SetPageChecked(page); page_cache_get(page); - btrfs_init_work(&fixup->work, btrfs_writepage_fixup_worker, NULL, NULL); + btrfs_init_work(&fixup->work, btrfs_fixup_helper, + btrfs_writepage_fixup_worker, NULL, NULL); fixup->page = page; btrfs_queue_work(root->fs_info->fixup_workers, &fixup->work); return -EBUSY; @@ -2822,7 +2831,8 @@ static int btrfs_writepage_end_io_hook(struct page *page, u64 start, u64 end, struct inode *inode = page->mapping->host; struct btrfs_root *root = BTRFS_I(inode)->root; struct btrfs_ordered_extent *ordered_extent = NULL; - struct btrfs_workqueue *workers; + struct btrfs_workqueue *wq; + btrfs_work_func_t func; trace_btrfs_writepage_end_io_hook(page, start, end, uptodate); @@ -2831,13 +2841,17 @@ static int btrfs_writepage_end_io_hook(struct page *page, u64 start, u64 end, end - start + 1, uptodate)) return 0; - btrfs_init_work(&ordered_extent->work, finish_ordered_fn, NULL, NULL); + if (btrfs_is_free_space_inode(inode)) { + wq = root->fs_info->endio_freespace_worker; + func = btrfs_freespace_write_helper; + } else { + wq = root->fs_info->endio_write_workers; + func = btrfs_endio_write_helper; + } - if (btrfs_is_free_space_inode(inode)) - workers = root->fs_info->endio_freespace_worker; - else - workers = root->fs_info->endio_write_workers; - btrfs_queue_work(workers, &ordered_extent->work); + btrfs_init_work(&ordered_extent->work, func, finish_ordered_fn, NULL, + NULL); + btrfs_queue_work(wq, &ordered_extent->work); return 0; } @@ -4234,7 +4248,8 @@ out: btrfs_abort_transaction(trans, root, ret); } error: - if (last_size != (u64)-1) + if (last_size != (u64)-1 && + root->root_key.objectid != BTRFS_TREE_LOG_OBJECTID) btrfs_ordered_update_i_size(inode, last_size, NULL); btrfs_free_path(path); return err; @@ -4674,6 +4689,11 @@ static void evict_inode_truncate_pages(struct inode *inode) clear_bit(EXTENT_FLAG_LOGGING, &em->flags); remove_extent_mapping(map_tree, em); free_extent_map(em); + if (need_resched()) { + write_unlock(&map_tree->lock); + cond_resched(); + write_lock(&map_tree->lock); + } } write_unlock(&map_tree->lock); @@ -4696,6 +4716,7 @@ static void evict_inode_truncate_pages(struct inode *inode) &cached_state, GFP_NOFS); free_extent_state(state); + cond_resched(); spin_lock(&io_tree->lock); } spin_unlock(&io_tree->lock); @@ -5181,6 +5202,42 @@ struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry) iput(inode); inode = ERR_PTR(ret); } + /* + * If orphan cleanup did remove any orphans, it means the tree + * was modified and therefore the commit root is not the same as + * the current root anymore. This is a problem, because send + * uses the commit root and therefore can see inode items that + * don't exist in the current root anymore, and for example make + * calls to btrfs_iget, which will do tree lookups based on the + * current root and not on the commit root. Those lookups will + * fail, returning a -ESTALE error, and making send fail with + * that error. So make sure a send does not see any orphans we + * have just removed, and that it will see the same inodes + * regardless of whether a transaction commit happened before + * it started (meaning that the commit root will be the same as + * the current root) or not. + */ + if (sub_root->node != sub_root->commit_root) { + u64 sub_flags = btrfs_root_flags(&sub_root->root_item); + + if (sub_flags & BTRFS_ROOT_SUBVOL_RDONLY) { + struct extent_buffer *eb; + + /* + * Assert we can't have races between dentry + * lookup called through the snapshot creation + * ioctl and the VFS. + */ + ASSERT(mutex_is_locked(&dir->i_mutex)); + + down_write(&root->fs_info->commit_root_sem); + eb = sub_root->commit_root; + sub_root->commit_root = + btrfs_root_node(sub_root); + up_write(&root->fs_info->commit_root_sem); + free_extent_buffer(eb); + } + } } return inode; @@ -5577,6 +5634,17 @@ int btrfs_set_inode_index(struct inode *dir, u64 *index) return ret; } +static int btrfs_insert_inode_locked(struct inode *inode) +{ + struct btrfs_iget_args args; + args.location = &BTRFS_I(inode)->location; + args.root = BTRFS_I(inode)->root; + + return insert_inode_locked4(inode, + btrfs_inode_hash(inode->i_ino, BTRFS_I(inode)->root), + btrfs_find_actor, &args); +} + static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct inode *dir, @@ -5606,6 +5674,13 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, } /* + * O_TMPFILE, set link count to 0, so that after this point, + * we fill in an inode item with the correct link count. + */ + if (!name) + set_nlink(inode, 0); + + /* * we have to initialize this early, so we can reclaim the inode * number if we fail afterwards in this function. */ @@ -5662,10 +5737,19 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, sizes[1] = name_len + sizeof(*ref); } + location = &BTRFS_I(inode)->location; + location->objectid = objectid; + location->offset = 0; + btrfs_set_key_type(location, BTRFS_INODE_ITEM_KEY); + + ret = btrfs_insert_inode_locked(inode); + if (ret < 0) + goto fail; + path->leave_spinning = 1; ret = btrfs_insert_empty_items(trans, root, path, key, sizes, nitems); if (ret != 0) - goto fail; + goto fail_unlock; inode_init_owner(inode, dir, mode); inode_set_bytes(inode, 0); @@ -5688,11 +5772,6 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, btrfs_mark_buffer_dirty(path->nodes[0]); btrfs_free_path(path); - location = &BTRFS_I(inode)->location; - location->objectid = objectid; - location->offset = 0; - btrfs_set_key_type(location, BTRFS_INODE_ITEM_KEY); - btrfs_inherit_iflags(inode, dir); if (S_ISREG(mode)) { @@ -5703,7 +5782,6 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, BTRFS_INODE_NODATASUM; } - btrfs_insert_inode_hash(inode); inode_tree_add(inode); trace_btrfs_inode_new(inode); @@ -5718,6 +5796,9 @@ static struct inode *btrfs_new_inode(struct btrfs_trans_handle *trans, btrfs_ino(inode), root->root_key.objectid, ret); return inode; + +fail_unlock: + unlock_new_inode(inode); fail: if (dir && name) BTRFS_I(dir)->index_cnt--; @@ -5852,28 +5933,28 @@ static int btrfs_mknod(struct inode *dir, struct dentry *dentry, goto out_unlock; } - err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name); - if (err) { - drop_inode = 1; - goto out_unlock; - } - /* * If the active LSM wants to access the inode during * d_instantiate it needs these. Smack checks to see * if the filesystem supports xattrs by looking at the * ops vector. */ - inode->i_op = &btrfs_special_inode_operations; - err = btrfs_add_nondir(trans, dir, dentry, inode, 0, index); + init_special_inode(inode, inode->i_mode, rdev); + + err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name); if (err) - drop_inode = 1; - else { - init_special_inode(inode, inode->i_mode, rdev); + goto out_unlock_inode; + + err = btrfs_add_nondir(trans, dir, dentry, inode, 0, index); + if (err) { + goto out_unlock_inode; + } else { btrfs_update_inode(trans, root, inode); + unlock_new_inode(inode); d_instantiate(dentry, inode); } + out_unlock: btrfs_end_transaction(trans, root); btrfs_balance_delayed_items(root); @@ -5883,6 +5964,12 @@ out_unlock: iput(inode); } return err; + +out_unlock_inode: + drop_inode = 1; + unlock_new_inode(inode); + goto out_unlock; + } static int btrfs_create(struct inode *dir, struct dentry *dentry, @@ -5917,15 +6004,6 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry, goto out_unlock; } drop_inode_on_err = 1; - - err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name); - if (err) - goto out_unlock; - - err = btrfs_update_inode(trans, root, inode); - if (err) - goto out_unlock; - /* * If the active LSM wants to access the inode during * d_instantiate it needs these. Smack checks to see @@ -5934,14 +6012,23 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry, */ inode->i_fop = &btrfs_file_operations; inode->i_op = &btrfs_file_inode_operations; + inode->i_mapping->a_ops = &btrfs_aops; + inode->i_mapping->backing_dev_info = &root->fs_info->bdi; + + err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name); + if (err) + goto out_unlock_inode; + + err = btrfs_update_inode(trans, root, inode); + if (err) + goto out_unlock_inode; err = btrfs_add_nondir(trans, dir, dentry, inode, 0, index); if (err) - goto out_unlock; + goto out_unlock_inode; - inode->i_mapping->a_ops = &btrfs_aops; - inode->i_mapping->backing_dev_info = &root->fs_info->bdi; BTRFS_I(inode)->io_tree.ops = &btrfs_extent_io_ops; + unlock_new_inode(inode); d_instantiate(dentry, inode); out_unlock: @@ -5953,6 +6040,11 @@ out_unlock: btrfs_balance_delayed_items(root); btrfs_btree_balance_dirty(root); return err; + +out_unlock_inode: + unlock_new_inode(inode); + goto out_unlock; + } static int btrfs_link(struct dentry *old_dentry, struct inode *dir, @@ -6060,25 +6152,30 @@ static int btrfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) } drop_on_err = 1; + /* these must be set before we unlock the inode */ + inode->i_op = &btrfs_dir_inode_operations; + inode->i_fop = &btrfs_dir_file_operations; err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name); if (err) - goto out_fail; - - inode->i_op = &btrfs_dir_inode_operations; - inode->i_fop = &btrfs_dir_file_operations; + goto out_fail_inode; btrfs_i_size_write(inode, 0); err = btrfs_update_inode(trans, root, inode); if (err) - goto out_fail; + goto out_fail_inode; err = btrfs_add_link(trans, dir, inode, dentry->d_name.name, dentry->d_name.len, 0, index); if (err) - goto out_fail; + goto out_fail_inode; d_instantiate(dentry, inode); + /* + * mkdir is special. We're unlocking after we call d_instantiate + * to avoid a race with nfsd calling d_instantiate. + */ + unlock_new_inode(inode); drop_on_err = 0; out_fail: @@ -6088,6 +6185,10 @@ out_fail: btrfs_balance_delayed_items(root); btrfs_btree_balance_dirty(root); return err; + +out_fail_inode: + unlock_new_inode(inode); + goto out_fail; } /* helper for btfs_get_extent. Given an existing extent in the tree, @@ -6097,14 +6198,14 @@ out_fail: static int merge_extent_mapping(struct extent_map_tree *em_tree, struct extent_map *existing, struct extent_map *em, - u64 map_start, u64 map_len) + u64 map_start) { u64 start_diff; BUG_ON(map_start < em->start || map_start >= extent_map_end(em)); start_diff = map_start - em->start; em->start = map_start; - em->len = map_len; + em->len = existing->start - em->start; if (em->block_start < EXTENT_MAP_LAST_BYTE && !test_bit(EXTENT_FLAG_COMPRESSED, &em->flags)) { em->block_start += start_diff; @@ -6275,6 +6376,8 @@ next: goto not_found; if (start + len <= found_key.offset) goto not_found; + if (start > found_key.offset) + goto next; em->start = start; em->orig_start = start; em->len = found_key.offset - start; @@ -6390,8 +6493,7 @@ insert: em->len); if (existing) { err = merge_extent_mapping(em_tree, existing, - em, start, - root->sectorsize); + em, start); free_extent_map(existing); if (err) { free_extent_map(em); @@ -7158,7 +7260,8 @@ again: if (!ret) goto out_test; - btrfs_init_work(&ordered->work, finish_ordered_fn, NULL, NULL); + btrfs_init_work(&ordered->work, btrfs_endio_write_helper, + finish_ordered_fn, NULL, NULL); btrfs_queue_work(root->fs_info->endio_write_workers, &ordered->work); out_test: @@ -7306,10 +7409,8 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip, map_length = orig_bio->bi_iter.bi_size; ret = btrfs_map_block(root->fs_info, rw, start_sector << 9, &map_length, NULL, 0); - if (ret) { - bio_put(orig_bio); + if (ret) return -EIO; - } if (map_length >= orig_bio->bi_iter.bi_size) { bio = orig_bio; @@ -7326,6 +7427,7 @@ static int btrfs_submit_direct_hook(int rw, struct btrfs_dio_private *dip, bio = btrfs_dio_bio_alloc(orig_bio->bi_bdev, start_sector, GFP_NOFS); if (!bio) return -ENOMEM; + bio->bi_private = dip; bio->bi_end_io = btrfs_end_dio_bio; atomic_inc(&dip->pending_bios); @@ -7534,7 +7636,8 @@ static ssize_t btrfs_direct_IO(int rw, struct kiocb *iocb, count = iov_iter_count(iter); if (test_bit(BTRFS_INODE_HAS_ASYNC_EXTENT, &BTRFS_I(inode)->runtime_flags)) - filemap_fdatawrite_range(inode->i_mapping, offset, count); + filemap_fdatawrite_range(inode->i_mapping, offset, + offset + count - 1); if (rw & WRITE) { /* @@ -8041,6 +8144,7 @@ int btrfs_create_subvol_root(struct btrfs_trans_handle *trans, set_nlink(inode, 1); btrfs_i_size_write(inode, 0); + unlock_new_inode(inode); err = btrfs_subvol_inherit_props(trans, new_root, parent_root); if (err) @@ -8495,7 +8599,9 @@ struct btrfs_delalloc_work *btrfs_alloc_delalloc_work(struct inode *inode, work->inode = inode; work->wait = wait; work->delay_iput = delay_iput; - btrfs_init_work(&work->work, btrfs_run_delalloc_work, NULL, NULL); + WARN_ON_ONCE(!inode); + btrfs_init_work(&work->work, btrfs_flush_delalloc_helper, + btrfs_run_delalloc_work, NULL, NULL); return work; } @@ -8699,12 +8805,6 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry, goto out_unlock; } - err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name); - if (err) { - drop_inode = 1; - goto out_unlock; - } - /* * If the active LSM wants to access the inode during * d_instantiate it needs these. Smack checks to see @@ -8713,23 +8813,22 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry, */ inode->i_fop = &btrfs_file_operations; inode->i_op = &btrfs_file_inode_operations; + inode->i_mapping->a_ops = &btrfs_aops; + inode->i_mapping->backing_dev_info = &root->fs_info->bdi; + BTRFS_I(inode)->io_tree.ops = &btrfs_extent_io_ops; + + err = btrfs_init_inode_security(trans, inode, dir, &dentry->d_name); + if (err) + goto out_unlock_inode; err = btrfs_add_nondir(trans, dir, dentry, inode, 0, index); if (err) - drop_inode = 1; - else { - inode->i_mapping->a_ops = &btrfs_aops; - inode->i_mapping->backing_dev_info = &root->fs_info->bdi; - BTRFS_I(inode)->io_tree.ops = &btrfs_extent_io_ops; - } - if (drop_inode) - goto out_unlock; + goto out_unlock_inode; path = btrfs_alloc_path(); if (!path) { err = -ENOMEM; - drop_inode = 1; - goto out_unlock; + goto out_unlock_inode; } key.objectid = btrfs_ino(inode); key.offset = 0; @@ -8738,9 +8837,8 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry, err = btrfs_insert_empty_item(trans, root, path, &key, datasize); if (err) { - drop_inode = 1; btrfs_free_path(path); - goto out_unlock; + goto out_unlock_inode; } leaf = path->nodes[0]; ei = btrfs_item_ptr(leaf, path->slots[0], @@ -8764,12 +8862,15 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry, inode_set_bytes(inode, name_len); btrfs_i_size_write(inode, name_len); err = btrfs_update_inode(trans, root, inode); - if (err) + if (err) { drop_inode = 1; + goto out_unlock_inode; + } + + unlock_new_inode(inode); + d_instantiate(dentry, inode); out_unlock: - if (!err) - d_instantiate(dentry, inode); btrfs_end_transaction(trans, root); if (drop_inode) { inode_dec_link_count(inode); @@ -8777,6 +8878,11 @@ out_unlock: } btrfs_btree_balance_dirty(root); return err; + +out_unlock_inode: + drop_inode = 1; + unlock_new_inode(inode); + goto out_unlock; } static int __btrfs_prealloc_file_range(struct inode *inode, int mode, @@ -8960,14 +9066,6 @@ static int btrfs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) goto out; } - ret = btrfs_init_inode_security(trans, inode, dir, NULL); - if (ret) - goto out; - - ret = btrfs_update_inode(trans, root, inode); - if (ret) - goto out; - inode->i_fop = &btrfs_file_operations; inode->i_op = &btrfs_file_inode_operations; @@ -8975,10 +9073,26 @@ static int btrfs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) inode->i_mapping->backing_dev_info = &root->fs_info->bdi; BTRFS_I(inode)->io_tree.ops = &btrfs_extent_io_ops; + ret = btrfs_init_inode_security(trans, inode, dir, NULL); + if (ret) + goto out_inode; + + ret = btrfs_update_inode(trans, root, inode); + if (ret) + goto out_inode; ret = btrfs_orphan_add(trans, inode); if (ret) - goto out; + goto out_inode; + /* + * We set number of links to 0 in btrfs_new_inode(), and here we set + * it to 1 because d_tmpfile() will issue a warning if the count is 0, + * through: + * + * d_tmpfile() -> inode_dec_link_count() -> drop_nlink() + */ + set_nlink(inode, 1); + unlock_new_inode(inode); d_tmpfile(dentry, inode); mark_inode_dirty(inode); @@ -8988,8 +9102,12 @@ out: iput(inode); btrfs_balance_delayed_items(root); btrfs_btree_balance_dirty(root); - return ret; + +out_inode: + unlock_new_inode(inode); + goto out; + } static const struct inode_operations btrfs_dir_inode_operations = { diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 47aceb494d1d..8a8e29878c34 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -711,39 +711,6 @@ static int create_snapshot(struct btrfs_root *root, struct inode *dir, if (ret) goto fail; - ret = btrfs_orphan_cleanup(pending_snapshot->snap); - if (ret) - goto fail; - - /* - * If orphan cleanup did remove any orphans, it means the tree was - * modified and therefore the commit root is not the same as the - * current root anymore. This is a problem, because send uses the - * commit root and therefore can see inode items that don't exist - * in the current root anymore, and for example make calls to - * btrfs_iget, which will do tree lookups based on the current root - * and not on the commit root. Those lookups will fail, returning a - * -ESTALE error, and making send fail with that error. So make sure - * a send does not see any orphans we have just removed, and that it - * will see the same inodes regardless of whether a transaction - * commit happened before it started (meaning that the commit root - * will be the same as the current root) or not. - */ - if (readonly && pending_snapshot->snap->node != - pending_snapshot->snap->commit_root) { - trans = btrfs_join_transaction(pending_snapshot->snap); - if (IS_ERR(trans) && PTR_ERR(trans) != -ENOENT) { - ret = PTR_ERR(trans); - goto fail; - } - if (!IS_ERR(trans)) { - ret = btrfs_commit_transaction(trans, - pending_snapshot->snap); - if (ret) - goto fail; - } - } - inode = btrfs_lookup_dentry(dentry->d_parent->d_inode, dentry); if (IS_ERR(inode)) { ret = PTR_ERR(inode); @@ -1052,8 +1019,10 @@ static bool defrag_check_next_extent(struct inode *inode, struct extent_map *em) return false; next = defrag_lookup_extent(inode, em->start + em->len); - if (!next || next->block_start >= EXTENT_MAP_LAST_BYTE || - (em->block_start + em->block_len == next->block_start)) + if (!next || next->block_start >= EXTENT_MAP_LAST_BYTE) + ret = false; + else if ((em->block_start + em->block_len == next->block_start) && + (em->block_len > 128 * 1024 && next->block_len > 128 * 1024)) ret = false; free_extent_map(next); @@ -1088,7 +1057,6 @@ static int should_defrag_range(struct inode *inode, u64 start, int thresh, } next_mergeable = defrag_check_next_extent(inode, em); - /* * we hit a real extent, if it is big or the next extent is not a * real extent, don't bother defragging it @@ -1735,7 +1703,7 @@ static noinline int btrfs_ioctl_snap_create_v2(struct file *file, ~(BTRFS_SUBVOL_CREATE_ASYNC | BTRFS_SUBVOL_RDONLY | BTRFS_SUBVOL_QGROUP_INHERIT)) { ret = -EOPNOTSUPP; - goto out; + goto free_args; } if (vol_args->flags & BTRFS_SUBVOL_CREATE_ASYNC) @@ -1745,27 +1713,31 @@ static noinline int btrfs_ioctl_snap_create_v2(struct file *file, if (vol_args->flags & BTRFS_SUBVOL_QGROUP_INHERIT) { if (vol_args->size > PAGE_CACHE_SIZE) { ret = -EINVAL; - goto out; + goto free_args; } inherit = memdup_user(vol_args->qgroup_inherit, vol_args->size); if (IS_ERR(inherit)) { ret = PTR_ERR(inherit); - goto out; + goto free_args; } } ret = btrfs_ioctl_snap_create_transid(file, vol_args->name, vol_args->fd, subvol, ptr, readonly, inherit); + if (ret) + goto free_inherit; - if (ret == 0 && ptr && - copy_to_user(arg + - offsetof(struct btrfs_ioctl_vol_args_v2, - transid), ptr, sizeof(*ptr))) + if (ptr && copy_to_user(arg + + offsetof(struct btrfs_ioctl_vol_args_v2, + transid), + ptr, sizeof(*ptr))) ret = -EFAULT; -out: - kfree(vol_args); + +free_inherit: kfree(inherit); +free_args: + kfree(vol_args); return ret; } @@ -2685,7 +2657,7 @@ static long btrfs_ioctl_rm_dev(struct file *file, void __user *arg) vol_args = memdup_user(arg, sizeof(*vol_args)); if (IS_ERR(vol_args)) { ret = PTR_ERR(vol_args); - goto out; + goto err_drop; } vol_args->name[BTRFS_PATH_NAME_MAX] = '\0'; @@ -2703,6 +2675,7 @@ static long btrfs_ioctl_rm_dev(struct file *file, void __user *arg) out: kfree(vol_args); +err_drop: mnt_drop_write_file(file); return ret; } @@ -3527,7 +3500,8 @@ process_slot: btrfs_mark_buffer_dirty(leaf); btrfs_release_path(path); - last_dest_end = new_key.offset + datal; + last_dest_end = ALIGN(new_key.offset + datal, + root->sectorsize); ret = clone_finish_inode_update(trans, inode, last_dest_end, destoff, olen); diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c index 963895c1f801..ac734ec4cc20 100644 --- a/fs/btrfs/ordered-data.c +++ b/fs/btrfs/ordered-data.c @@ -615,6 +615,7 @@ int btrfs_wait_ordered_extents(struct btrfs_root *root, int nr) spin_unlock(&root->ordered_extent_lock); btrfs_init_work(&ordered->flush_work, + btrfs_flush_delalloc_helper, btrfs_run_ordered_extent_work, NULL, NULL); list_add_tail(&ordered->work_list, &works); btrfs_queue_work(root->fs_info->flush_workers, diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c index b497498484be..ded5c601d916 100644 --- a/fs/btrfs/qgroup.c +++ b/fs/btrfs/qgroup.c @@ -1973,7 +1973,7 @@ static int qgroup_subtree_accounting(struct btrfs_trans_handle *trans, elem.seq, &roots); btrfs_put_tree_mod_seq(fs_info, &elem); if (ret < 0) - return ret; + goto out; if (roots->nnodes != 1) goto out; @@ -2720,6 +2720,7 @@ qgroup_rescan_init(struct btrfs_fs_info *fs_info, u64 progress_objectid, memset(&fs_info->qgroup_rescan_work, 0, sizeof(fs_info->qgroup_rescan_work)); btrfs_init_work(&fs_info->qgroup_rescan_work, + btrfs_qgroup_rescan_helper, btrfs_qgroup_rescan_worker, NULL, NULL); if (ret) { diff --git a/fs/btrfs/raid56.c b/fs/btrfs/raid56.c index 4a88f073fdd7..0a6b6e4bcbb9 100644 --- a/fs/btrfs/raid56.c +++ b/fs/btrfs/raid56.c @@ -1416,7 +1416,8 @@ cleanup: static void async_rmw_stripe(struct btrfs_raid_bio *rbio) { - btrfs_init_work(&rbio->work, rmw_work, NULL, NULL); + btrfs_init_work(&rbio->work, btrfs_rmw_helper, + rmw_work, NULL, NULL); btrfs_queue_work(rbio->fs_info->rmw_workers, &rbio->work); @@ -1424,7 +1425,8 @@ static void async_rmw_stripe(struct btrfs_raid_bio *rbio) static void async_read_rebuild(struct btrfs_raid_bio *rbio) { - btrfs_init_work(&rbio->work, read_rebuild_work, NULL, NULL); + btrfs_init_work(&rbio->work, btrfs_rmw_helper, + read_rebuild_work, NULL, NULL); btrfs_queue_work(rbio->fs_info->rmw_workers, &rbio->work); @@ -1665,7 +1667,8 @@ static void btrfs_raid_unplug(struct blk_plug_cb *cb, bool from_schedule) plug = container_of(cb, struct btrfs_plug_cb, cb); if (from_schedule) { - btrfs_init_work(&plug->work, unplug_work, NULL, NULL); + btrfs_init_work(&plug->work, btrfs_rmw_helper, + unplug_work, NULL, NULL); btrfs_queue_work(plug->info->rmw_workers, &plug->work); return; diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c index 09230cf3a244..20408c6b665a 100644 --- a/fs/btrfs/reada.c +++ b/fs/btrfs/reada.c @@ -798,7 +798,8 @@ static void reada_start_machine(struct btrfs_fs_info *fs_info) /* FIXME we cannot handle this properly right now */ BUG(); } - btrfs_init_work(&rmw->work, reada_start_machine_worker, NULL, NULL); + btrfs_init_work(&rmw->work, btrfs_readahead_helper, + reada_start_machine_worker, NULL, NULL); rmw->fs_info = fs_info; btrfs_queue_work(fs_info->readahead_workers, &rmw->work); diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c index b6d198f5181e..f4a41f37be22 100644 --- a/fs/btrfs/scrub.c +++ b/fs/btrfs/scrub.c @@ -428,8 +428,8 @@ struct scrub_ctx *scrub_setup_ctx(struct btrfs_device *dev, int is_dev_replace) sbio->index = i; sbio->sctx = sctx; sbio->page_count = 0; - btrfs_init_work(&sbio->work, scrub_bio_end_io_worker, - NULL, NULL); + btrfs_init_work(&sbio->work, btrfs_scrub_helper, + scrub_bio_end_io_worker, NULL, NULL); if (i != SCRUB_BIOS_PER_SCTX - 1) sctx->bios[i]->next_free = i + 1; @@ -999,8 +999,8 @@ nodatasum_case: fixup_nodatasum->root = fs_info->extent_root; fixup_nodatasum->mirror_num = failed_mirror_index + 1; scrub_pending_trans_workers_inc(sctx); - btrfs_init_work(&fixup_nodatasum->work, scrub_fixup_nodatasum, - NULL, NULL); + btrfs_init_work(&fixup_nodatasum->work, btrfs_scrub_helper, + scrub_fixup_nodatasum, NULL, NULL); btrfs_queue_work(fs_info->scrub_workers, &fixup_nodatasum->work); goto out; @@ -1616,7 +1616,8 @@ static void scrub_wr_bio_end_io(struct bio *bio, int err) sbio->err = err; sbio->bio = bio; - btrfs_init_work(&sbio->work, scrub_wr_bio_end_io_worker, NULL, NULL); + btrfs_init_work(&sbio->work, btrfs_scrubwrc_helper, + scrub_wr_bio_end_io_worker, NULL, NULL); btrfs_queue_work(fs_info->scrub_wr_completion_workers, &sbio->work); } @@ -2904,6 +2905,7 @@ int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, struct scrub_ctx *sctx; int ret; struct btrfs_device *dev; + struct rcu_string *name; if (btrfs_fs_closing(fs_info)) return -EINVAL; @@ -2965,6 +2967,16 @@ int btrfs_scrub_dev(struct btrfs_fs_info *fs_info, u64 devid, u64 start, return -ENODEV; } + if (!is_dev_replace && !readonly && !dev->writeable) { + mutex_unlock(&fs_info->fs_devices->device_list_mutex); + rcu_read_lock(); + name = rcu_dereference(dev->name); + btrfs_err(fs_info, "scrub: device %s is not writable", + name->str); + rcu_read_unlock(); + return -EROFS; + } + mutex_lock(&fs_info->scrub_lock); if (!dev->in_fs_metadata || dev->is_tgtdev_for_dev_replace) { mutex_unlock(&fs_info->scrub_lock); @@ -3203,7 +3215,8 @@ static int copy_nocow_pages(struct scrub_ctx *sctx, u64 logical, u64 len, nocow_ctx->len = len; nocow_ctx->mirror_num = mirror_num; nocow_ctx->physical_for_dev_replace = physical_for_dev_replace; - btrfs_init_work(&nocow_ctx->work, copy_nocow_pages_worker, NULL, NULL); + btrfs_init_work(&nocow_ctx->work, btrfs_scrubnc_helper, + copy_nocow_pages_worker, NULL, NULL); INIT_LIST_HEAD(&nocow_ctx->inodes); btrfs_queue_work(fs_info->scrub_nocow_workers, &nocow_ctx->work); diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c index 78699364f537..12e53556e214 100644 --- a/fs/btrfs/sysfs.c +++ b/fs/btrfs/sysfs.c @@ -614,7 +614,7 @@ int btrfs_kobj_rm_device(struct btrfs_fs_info *fs_info, if (!fs_info->device_dir_kobj) return -EINVAL; - if (one_device) { + if (one_device && one_device->bdev) { disk = one_device->bdev->bd_part; disk_kobj = &part_to_dev(disk)->kobj; diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c index 9e1f2cd5e67a..d0262ceb85e1 100644 --- a/fs/btrfs/tree-log.c +++ b/fs/btrfs/tree-log.c @@ -94,8 +94,10 @@ #define LOG_WALK_REPLAY_ALL 3 static int btrfs_log_inode(struct btrfs_trans_handle *trans, - struct btrfs_root *root, struct inode *inode, - int inode_only); + struct btrfs_root *root, struct inode *inode, + int inode_only, + const loff_t start, + const loff_t end); static int link_to_fixup_dir(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct btrfs_path *path, u64 objectid); @@ -3298,7 +3300,7 @@ static noinline int copy_items(struct btrfs_trans_handle *trans, struct list_head ordered_sums; int skip_csum = BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM; bool has_extents = false; - bool need_find_last_extent = (*last_extent == 0); + bool need_find_last_extent = true; bool done = false; INIT_LIST_HEAD(&ordered_sums); @@ -3352,8 +3354,7 @@ static noinline int copy_items(struct btrfs_trans_handle *trans, */ if (ins_keys[i].type == BTRFS_EXTENT_DATA_KEY) { has_extents = true; - if (need_find_last_extent && - first_key.objectid == (u64)-1) + if (first_key.objectid == (u64)-1) first_key = ins_keys[i]; } else { need_find_last_extent = false; @@ -3427,6 +3428,16 @@ static noinline int copy_items(struct btrfs_trans_handle *trans, if (!has_extents) return ret; + if (need_find_last_extent && *last_extent == first_key.offset) { + /* + * We don't have any leafs between our current one and the one + * we processed before that can have file extent items for our + * inode (and have a generation number smaller than our current + * transaction id). + */ + need_find_last_extent = false; + } + /* * Because we use btrfs_search_forward we could skip leaves that were * not modified and then assume *last_extent is valid when it really @@ -3537,7 +3548,7 @@ fill_holes: 0, 0); if (ret) break; - *last_extent = offset + len; + *last_extent = extent_end; } /* * Need to let the callers know we dropped the path so they should @@ -3849,8 +3860,10 @@ process: * This handles both files and directories. */ static int btrfs_log_inode(struct btrfs_trans_handle *trans, - struct btrfs_root *root, struct inode *inode, - int inode_only) + struct btrfs_root *root, struct inode *inode, + int inode_only, + const loff_t start, + const loff_t end) { struct btrfs_path *path; struct btrfs_path *dst_path; @@ -3867,6 +3880,7 @@ static int btrfs_log_inode(struct btrfs_trans_handle *trans, int ins_nr; bool fast_search = false; u64 ino = btrfs_ino(inode); + struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree; path = btrfs_alloc_path(); if (!path) @@ -3980,7 +3994,8 @@ again: if (ret < 0) { err = ret; goto out_unlock; - } if (ret) { + } + if (ret) { ins_nr = 0; btrfs_release_path(path); continue; @@ -4040,13 +4055,35 @@ log_extents: goto out_unlock; } } else if (inode_only == LOG_INODE_ALL) { - struct extent_map_tree *tree = &BTRFS_I(inode)->extent_tree; struct extent_map *em, *n; - write_lock(&tree->lock); - list_for_each_entry_safe(em, n, &tree->modified_extents, list) - list_del_init(&em->list); - write_unlock(&tree->lock); + write_lock(&em_tree->lock); + /* + * We can't just remove every em if we're called for a ranged + * fsync - that is, one that doesn't cover the whole possible + * file range (0 to LLONG_MAX). This is because we can have + * em's that fall outside the range we're logging and therefore + * their ordered operations haven't completed yet + * (btrfs_finish_ordered_io() not invoked yet). This means we + * didn't get their respective file extent item in the fs/subvol + * tree yet, and need to let the next fast fsync (one which + * consults the list of modified extent maps) find the em so + * that it logs a matching file extent item and waits for the + * respective ordered operation to complete (if it's still + * running). + * + * Removing every em outside the range we're logging would make + * the next fast fsync not log their matching file extent items, + * therefore making us lose data after a log replay. + */ + list_for_each_entry_safe(em, n, &em_tree->modified_extents, + list) { + const u64 mod_end = em->mod_start + em->mod_len - 1; + + if (em->mod_start >= start && mod_end <= end) + list_del_init(&em->list); + } + write_unlock(&em_tree->lock); } if (inode_only == LOG_INODE_ALL && S_ISDIR(inode->i_mode)) { @@ -4056,6 +4093,7 @@ log_extents: goto out_unlock; } } + BTRFS_I(inode)->logged_trans = trans->transid; BTRFS_I(inode)->last_log_commit = BTRFS_I(inode)->last_sub_trans; out_unlock: @@ -4152,7 +4190,10 @@ out: */ static int btrfs_log_inode_parent(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct inode *inode, - struct dentry *parent, int exists_only, + struct dentry *parent, + const loff_t start, + const loff_t end, + int exists_only, struct btrfs_log_ctx *ctx) { int inode_only = exists_only ? LOG_INODE_EXISTS : LOG_INODE_ALL; @@ -4198,7 +4239,7 @@ static int btrfs_log_inode_parent(struct btrfs_trans_handle *trans, if (ret) goto end_no_trans; - ret = btrfs_log_inode(trans, root, inode, inode_only); + ret = btrfs_log_inode(trans, root, inode, inode_only, start, end); if (ret) goto end_trans; @@ -4226,7 +4267,8 @@ static int btrfs_log_inode_parent(struct btrfs_trans_handle *trans, if (BTRFS_I(inode)->generation > root->fs_info->last_trans_committed) { - ret = btrfs_log_inode(trans, root, inode, inode_only); + ret = btrfs_log_inode(trans, root, inode, inode_only, + 0, LLONG_MAX); if (ret) goto end_trans; } @@ -4260,13 +4302,15 @@ end_no_trans: */ int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct dentry *dentry, + const loff_t start, + const loff_t end, struct btrfs_log_ctx *ctx) { struct dentry *parent = dget_parent(dentry); int ret; ret = btrfs_log_inode_parent(trans, root, dentry->d_inode, parent, - 0, ctx); + start, end, 0, ctx); dput(parent); return ret; @@ -4503,6 +4547,7 @@ int btrfs_log_new_name(struct btrfs_trans_handle *trans, root->fs_info->last_trans_committed)) return 0; - return btrfs_log_inode_parent(trans, root, inode, parent, 1, NULL); + return btrfs_log_inode_parent(trans, root, inode, parent, 0, + LLONG_MAX, 1, NULL); } diff --git a/fs/btrfs/tree-log.h b/fs/btrfs/tree-log.h index 7f5b41bd5373..e2e798ae7cd7 100644 --- a/fs/btrfs/tree-log.h +++ b/fs/btrfs/tree-log.h @@ -59,6 +59,8 @@ int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans, int btrfs_recover_log_trees(struct btrfs_root *tree_root); int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans, struct btrfs_root *root, struct dentry *dentry, + const loff_t start, + const loff_t end, struct btrfs_log_ctx *ctx); int btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans, struct btrfs_root *root, diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 6cb82f62cb7c..2c2d6d1d8eee 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -508,6 +508,43 @@ static noinline int device_list_add(const char *path, ret = 1; device->fs_devices = fs_devices; } else if (!device->name || strcmp(device->name->str, path)) { + /* + * When FS is already mounted. + * 1. If you are here and if the device->name is NULL that + * means this device was missing at time of FS mount. + * 2. If you are here and if the device->name is different + * from 'path' that means either + * a. The same device disappeared and reappeared with + * different name. or + * b. The missing-disk-which-was-replaced, has + * reappeared now. + * + * We must allow 1 and 2a above. But 2b would be a spurious + * and unintentional. + * + * Further in case of 1 and 2a above, the disk at 'path' + * would have missed some transaction when it was away and + * in case of 2a the stale bdev has to be updated as well. + * 2b must not be allowed at all time. + */ + + /* + * For now, we do allow update to btrfs_fs_device through the + * btrfs dev scan cli after FS has been mounted. We're still + * tracking a problem where systems fail mount by subvolume id + * when we reject replacement on a mounted FS. + */ + if (!fs_devices->opened && found_transid < device->generation) { + /* + * That is if the FS is _not_ mounted and if you + * are here, that means there is more than one + * disk with same uuid and devid.We keep the one + * with larger generation number or the last-in if + * generation are equal. + */ + return -EEXIST; + } + name = rcu_string_strdup(path, GFP_NOFS); if (!name) return -ENOMEM; @@ -519,6 +556,15 @@ static noinline int device_list_add(const char *path, } } + /* + * Unmount does not free the btrfs_device struct but would zero + * generation along with most of the other members. So just update + * it back. We need it to pick the disk with largest generation + * (as above). + */ + if (!fs_devices->opened) + device->generation = found_transid; + if (found_transid > fs_devices->latest_trans) { fs_devices->latest_devid = devid; fs_devices->latest_trans = found_transid; @@ -1436,7 +1482,7 @@ static int btrfs_add_device(struct btrfs_trans_handle *trans, btrfs_set_device_io_align(leaf, dev_item, device->io_align); btrfs_set_device_io_width(leaf, dev_item, device->io_width); btrfs_set_device_sector_size(leaf, dev_item, device->sector_size); - btrfs_set_device_total_bytes(leaf, dev_item, device->total_bytes); + btrfs_set_device_total_bytes(leaf, dev_item, device->disk_total_bytes); btrfs_set_device_bytes_used(leaf, dev_item, device->bytes_used); btrfs_set_device_group(leaf, dev_item, 0); btrfs_set_device_seek_speed(leaf, dev_item, 0); @@ -1671,7 +1717,7 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path) device->fs_devices->total_devices--; if (device->missing) - root->fs_info->fs_devices->missing_devices--; + device->fs_devices->missing_devices--; next_device = list_entry(root->fs_info->fs_devices->devices.next, struct btrfs_device, dev_list); @@ -1801,8 +1847,12 @@ void btrfs_rm_dev_replace_srcdev(struct btrfs_fs_info *fs_info, if (srcdev->bdev) { fs_info->fs_devices->open_devices--; - /* zero out the old super */ - btrfs_scratch_superblock(srcdev); + /* + * zero out the old super if it is not writable + * (e.g. seed device) + */ + if (srcdev->writeable) + btrfs_scratch_superblock(srcdev); } call_rcu(&srcdev->rcu, free_device); @@ -1941,6 +1991,9 @@ static int btrfs_prepare_sprout(struct btrfs_root *root) fs_devices->seeding = 0; fs_devices->num_devices = 0; fs_devices->open_devices = 0; + fs_devices->missing_devices = 0; + fs_devices->num_can_discard = 0; + fs_devices->rotating = 0; fs_devices->seed = seed_devices; generate_random_uuid(fs_devices->fsid); @@ -5800,7 +5853,8 @@ struct btrfs_device *btrfs_alloc_device(struct btrfs_fs_info *fs_info, else generate_random_uuid(dev->uuid); - btrfs_init_work(&dev->work, pending_bios_fn, NULL, NULL); + btrfs_init_work(&dev->work, btrfs_submit_helper, + pending_bios_fn, NULL, NULL); return dev; } diff --git a/fs/buffer.c b/fs/buffer.c index 8f05111bbb8b..3588a80854b2 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -1022,7 +1022,8 @@ grow_dev_page(struct block_device *bdev, sector_t block, bh = page_buffers(page); if (bh->b_size == size) { end_block = init_page_buffers(page, bdev, - index << sizebits, size); + (sector_t)index << sizebits, + size); goto done; } if (!try_to_free_buffers(page)) @@ -1043,7 +1044,8 @@ grow_dev_page(struct block_device *bdev, sector_t block, */ spin_lock(&inode->i_mapping->private_lock); link_dev_buffers(page, bh); - end_block = init_page_buffers(page, bdev, index << sizebits, size); + end_block = init_page_buffers(page, bdev, (sector_t)index << sizebits, + size); spin_unlock(&inode->i_mapping->private_lock); done: ret = (block < end_block) ? 1 : -ENXIO; diff --git a/fs/cachefiles/bind.c b/fs/cachefiles/bind.c index d749731dc0ee..fbb08e97438d 100644 --- a/fs/cachefiles/bind.c +++ b/fs/cachefiles/bind.c @@ -50,18 +50,18 @@ int cachefiles_daemon_bind(struct cachefiles_cache *cache, char *args) cache->brun_percent < 100); if (*args) { - pr_err("'bind' command doesn't take an argument"); + pr_err("'bind' command doesn't take an argument\n"); return -EINVAL; } if (!cache->rootdirname) { - pr_err("No cache directory specified"); + pr_err("No cache directory specified\n"); return -EINVAL; } /* don't permit already bound caches to be re-bound */ if (test_bit(CACHEFILES_READY, &cache->flags)) { - pr_err("Cache already bound"); + pr_err("Cache already bound\n"); return -EBUSY; } @@ -248,7 +248,7 @@ error_open_root: kmem_cache_free(cachefiles_object_jar, fsdef); error_root_object: cachefiles_end_secure(cache, saved_cred); - pr_err("Failed to register: %d", ret); + pr_err("Failed to register: %d\n", ret); return ret; } diff --git a/fs/cachefiles/daemon.c b/fs/cachefiles/daemon.c index b078d3081d6c..ce1b115dcc28 100644 --- a/fs/cachefiles/daemon.c +++ b/fs/cachefiles/daemon.c @@ -315,7 +315,7 @@ static unsigned int cachefiles_daemon_poll(struct file *file, static int cachefiles_daemon_range_error(struct cachefiles_cache *cache, char *args) { - pr_err("Free space limits must be in range 0%%<=stop<cull<run<100%%"); + pr_err("Free space limits must be in range 0%%<=stop<cull<run<100%%\n"); return -EINVAL; } @@ -475,12 +475,12 @@ static int cachefiles_daemon_dir(struct cachefiles_cache *cache, char *args) _enter(",%s", args); if (!*args) { - pr_err("Empty directory specified"); + pr_err("Empty directory specified\n"); return -EINVAL; } if (cache->rootdirname) { - pr_err("Second cache directory specified"); + pr_err("Second cache directory specified\n"); return -EEXIST; } @@ -503,12 +503,12 @@ static int cachefiles_daemon_secctx(struct cachefiles_cache *cache, char *args) _enter(",%s", args); if (!*args) { - pr_err("Empty security context specified"); + pr_err("Empty security context specified\n"); return -EINVAL; } if (cache->secctx) { - pr_err("Second security context specified"); + pr_err("Second security context specified\n"); return -EINVAL; } @@ -531,7 +531,7 @@ static int cachefiles_daemon_tag(struct cachefiles_cache *cache, char *args) _enter(",%s", args); if (!*args) { - pr_err("Empty tag specified"); + pr_err("Empty tag specified\n"); return -EINVAL; } @@ -562,12 +562,12 @@ static int cachefiles_daemon_cull(struct cachefiles_cache *cache, char *args) goto inval; if (!test_bit(CACHEFILES_READY, &cache->flags)) { - pr_err("cull applied to unready cache"); + pr_err("cull applied to unready cache\n"); return -EIO; } if (test_bit(CACHEFILES_DEAD, &cache->flags)) { - pr_err("cull applied to dead cache"); + pr_err("cull applied to dead cache\n"); return -EIO; } @@ -587,11 +587,11 @@ static int cachefiles_daemon_cull(struct cachefiles_cache *cache, char *args) notdir: path_put(&path); - pr_err("cull command requires dirfd to be a directory"); + pr_err("cull command requires dirfd to be a directory\n"); return -ENOTDIR; inval: - pr_err("cull command requires dirfd and filename"); + pr_err("cull command requires dirfd and filename\n"); return -EINVAL; } @@ -614,7 +614,7 @@ static int cachefiles_daemon_debug(struct cachefiles_cache *cache, char *args) return 0; inval: - pr_err("debug command requires mask"); + pr_err("debug command requires mask\n"); return -EINVAL; } @@ -634,12 +634,12 @@ static int cachefiles_daemon_inuse(struct cachefiles_cache *cache, char *args) goto inval; if (!test_bit(CACHEFILES_READY, &cache->flags)) { - pr_err("inuse applied to unready cache"); + pr_err("inuse applied to unready cache\n"); return -EIO; } if (test_bit(CACHEFILES_DEAD, &cache->flags)) { - pr_err("inuse applied to dead cache"); + pr_err("inuse applied to dead cache\n"); return -EIO; } @@ -659,11 +659,11 @@ static int cachefiles_daemon_inuse(struct cachefiles_cache *cache, char *args) notdir: path_put(&path); - pr_err("inuse command requires dirfd to be a directory"); + pr_err("inuse command requires dirfd to be a directory\n"); return -ENOTDIR; inval: - pr_err("inuse command requires dirfd and filename"); + pr_err("inuse command requires dirfd and filename\n"); return -EINVAL; } diff --git a/fs/cachefiles/internal.h b/fs/cachefiles/internal.h index 3d50998abf57..8c52472d2efa 100644 --- a/fs/cachefiles/internal.h +++ b/fs/cachefiles/internal.h @@ -255,7 +255,7 @@ extern int cachefiles_remove_object_xattr(struct cachefiles_cache *cache, #define cachefiles_io_error(___cache, FMT, ...) \ do { \ - pr_err("I/O Error: " FMT, ##__VA_ARGS__); \ + pr_err("I/O Error: " FMT"\n", ##__VA_ARGS__); \ fscache_io_error(&(___cache)->cache); \ set_bit(CACHEFILES_DEAD, &(___cache)->flags); \ } while (0) diff --git a/fs/cachefiles/main.c b/fs/cachefiles/main.c index 180edfb45f66..711f13d8c2de 100644 --- a/fs/cachefiles/main.c +++ b/fs/cachefiles/main.c @@ -84,7 +84,7 @@ error_proc: error_object_jar: misc_deregister(&cachefiles_dev); error_dev: - pr_err("failed to register: %d", ret); + pr_err("failed to register: %d\n", ret); return ret; } diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c index 5bf2b41e66d3..dad7d9542a24 100644 --- a/fs/cachefiles/namei.c +++ b/fs/cachefiles/namei.c @@ -543,7 +543,7 @@ lookup_again: next, next->d_inode, next->d_inode->i_ino); } else if (!S_ISDIR(next->d_inode->i_mode)) { - pr_err("inode %lu is not a directory", + pr_err("inode %lu is not a directory\n", next->d_inode->i_ino); ret = -ENOBUFS; goto error; @@ -574,7 +574,7 @@ lookup_again: } else if (!S_ISDIR(next->d_inode->i_mode) && !S_ISREG(next->d_inode->i_mode) ) { - pr_err("inode %lu is not a file or directory", + pr_err("inode %lu is not a file or directory\n", next->d_inode->i_ino); ret = -ENOBUFS; goto error; @@ -768,7 +768,7 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache, ASSERT(subdir->d_inode); if (!S_ISDIR(subdir->d_inode->i_mode)) { - pr_err("%s is not a directory", dirname); + pr_err("%s is not a directory\n", dirname); ret = -EIO; goto check_error; } @@ -779,7 +779,8 @@ struct dentry *cachefiles_get_directory(struct cachefiles_cache *cache, !subdir->d_inode->i_op->lookup || !subdir->d_inode->i_op->mkdir || !subdir->d_inode->i_op->create || - !subdir->d_inode->i_op->rename || + (!subdir->d_inode->i_op->rename && + !subdir->d_inode->i_op->rename2) || !subdir->d_inode->i_op->rmdir || !subdir->d_inode->i_op->unlink) goto check_error; @@ -795,13 +796,13 @@ check_error: mkdir_error: mutex_unlock(&dir->d_inode->i_mutex); dput(subdir); - pr_err("mkdir %s failed with error %d", dirname, ret); + pr_err("mkdir %s failed with error %d\n", dirname, ret); return ERR_PTR(ret); lookup_error: mutex_unlock(&dir->d_inode->i_mutex); ret = PTR_ERR(subdir); - pr_err("Lookup %s failed with error %d", dirname, ret); + pr_err("Lookup %s failed with error %d\n", dirname, ret); return ERR_PTR(ret); nomem_d_alloc: @@ -891,7 +892,7 @@ lookup_error: if (ret == -EIO) { cachefiles_io_error(cache, "Lookup failed"); } else if (ret != -ENOMEM) { - pr_err("Internal error: %d", ret); + pr_err("Internal error: %d\n", ret); ret = -EIO; } @@ -950,7 +951,7 @@ error: } if (ret != -ENOMEM) { - pr_err("Internal error: %d", ret); + pr_err("Internal error: %d\n", ret); ret = -EIO; } diff --git a/fs/cachefiles/rdwr.c b/fs/cachefiles/rdwr.c index 4b1fb5ca65b8..25e745b8eb1b 100644 --- a/fs/cachefiles/rdwr.c +++ b/fs/cachefiles/rdwr.c @@ -151,7 +151,6 @@ static void cachefiles_read_copier(struct fscache_operation *_op) struct cachefiles_one_read *monitor; struct cachefiles_object *object; struct fscache_retrieval *op; - struct pagevec pagevec; int error, max; op = container_of(_op, struct fscache_retrieval, op); @@ -160,8 +159,6 @@ static void cachefiles_read_copier(struct fscache_operation *_op) _enter("{ino=%lu}", object->backer->d_inode->i_ino); - pagevec_init(&pagevec, 0); - max = 8; spin_lock_irq(&object->work_lock); @@ -396,7 +393,6 @@ int cachefiles_read_or_alloc_page(struct fscache_retrieval *op, { struct cachefiles_object *object; struct cachefiles_cache *cache; - struct pagevec pagevec; struct inode *inode; sector_t block0, block; unsigned shift; @@ -427,8 +423,6 @@ int cachefiles_read_or_alloc_page(struct fscache_retrieval *op, op->op.flags |= FSCACHE_OP_ASYNC; op->op.processor = cachefiles_read_copier; - pagevec_init(&pagevec, 0); - /* we assume the absence or presence of the first block is a good * enough indication for the page as a whole * - TODO: don't use bmap() for this as it is _not_ actually good diff --git a/fs/cachefiles/xattr.c b/fs/cachefiles/xattr.c index 1ad51ffbb275..acbc1f094fb1 100644 --- a/fs/cachefiles/xattr.c +++ b/fs/cachefiles/xattr.c @@ -51,7 +51,7 @@ int cachefiles_check_object_type(struct cachefiles_object *object) } if (ret != -EEXIST) { - pr_err("Can't set xattr on %*.*s [%lu] (err %d)", + pr_err("Can't set xattr on %*.*s [%lu] (err %d)\n", dentry->d_name.len, dentry->d_name.len, dentry->d_name.name, dentry->d_inode->i_ino, -ret); @@ -64,7 +64,7 @@ int cachefiles_check_object_type(struct cachefiles_object *object) if (ret == -ERANGE) goto bad_type_length; - pr_err("Can't read xattr on %*.*s [%lu] (err %d)", + pr_err("Can't read xattr on %*.*s [%lu] (err %d)\n", dentry->d_name.len, dentry->d_name.len, dentry->d_name.name, dentry->d_inode->i_ino, -ret); @@ -85,14 +85,14 @@ error: return ret; bad_type_length: - pr_err("Cache object %lu type xattr length incorrect", + pr_err("Cache object %lu type xattr length incorrect\n", dentry->d_inode->i_ino); ret = -EIO; goto error; bad_type: xtype[2] = 0; - pr_err("Cache object %*.*s [%lu] type %s not %s", + pr_err("Cache object %*.*s [%lu] type %s not %s\n", dentry->d_name.len, dentry->d_name.len, dentry->d_name.name, dentry->d_inode->i_ino, xtype, type); @@ -293,7 +293,7 @@ error: return ret; bad_type_length: - pr_err("Cache object %lu xattr length incorrect", + pr_err("Cache object %lu xattr length incorrect\n", dentry->d_inode->i_ino); ret = -EIO; goto error; diff --git a/fs/cifs/Kconfig b/fs/cifs/Kconfig index 603f18a65c12..a2172f3f69e3 100644 --- a/fs/cifs/Kconfig +++ b/fs/cifs/Kconfig @@ -22,6 +22,11 @@ config CIFS support for OS/2 and Windows ME and similar servers is provided as well. + The module also provides optional support for the followon + protocols for CIFS including SMB3, which enables + useful performance and security features (see the description + of CONFIG_CIFS_SMB2). + The cifs module provides an advanced network file system client for mounting to CIFS compliant servers. It includes support for DFS (hierarchical name space), secure per-user @@ -121,7 +126,8 @@ config CIFS_ACL depends on CIFS_XATTR && KEYS help Allows fetching CIFS/NTFS ACL from the server. The DACL blob - is handed over to the application/caller. + is handed over to the application/caller. See the man + page for getcifsacl for more information. config CIFS_DEBUG bool "Enable CIFS debugging routines" @@ -162,7 +168,7 @@ config CIFS_NFSD_EXPORT Allows NFS server to export a CIFS mounted share (nfsd over cifs) config CIFS_SMB2 - bool "SMB2 network file system support" + bool "SMB2 and SMB3 network file system support" depends on CIFS && INET select NLS select KEYS @@ -170,16 +176,21 @@ config CIFS_SMB2 select DNS_RESOLVER help - This enables experimental support for the SMB2 (Server Message Block - version 2) protocol. The SMB2 protocol is the successor to the - popular CIFS and SMB network file sharing protocols. SMB2 is the - native file sharing mechanism for recent versions of Windows - operating systems (since Vista). SMB2 enablement will eventually - allow users better performance, security and features, than would be - possible with cifs. Note that smb2 mount options also are simpler - (compared to cifs) due to protocol improvements. - - Unless you are a developer or tester, say N. + This enables support for the Server Message Block version 2 + family of protocols, including SMB3. SMB3 support is + enabled on mount by specifying "vers=3.0" in the mount + options. These protocols are the successors to the popular + CIFS and SMB network file sharing protocols. SMB3 is the + native file sharing mechanism for the more recent + versions of Windows (Windows 8 and Windows 2012 and + later) and Samba server and many others support SMB3 well. + In general SMB3 enables better performance, security + and features, than would be possible with CIFS (Note that + when mounting to Samba, due to the CIFS POSIX extensions, + CIFS mounts can provide slightly better POSIX compatibility + than SMB3 mounts do though). Note that SMB2/SMB3 mount + options are also slightly simpler (compared to CIFS) due + to protocol improvements. config CIFS_FSCACHE bool "Provide CIFS client caching support" diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h index b0fafa499505..002e0c173939 100644 --- a/fs/cifs/cifsfs.h +++ b/fs/cifs/cifsfs.h @@ -136,5 +136,5 @@ extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg); extern const struct export_operations cifs_export_ops; #endif /* CONFIG_CIFS_NFSD_EXPORT */ -#define CIFS_VERSION "2.04" +#define CIFS_VERSION "2.05" #endif /* _CIFSFS_H */ diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index dfc731b02aa9..25b8392bfdd2 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -70,11 +70,6 @@ #define SERVER_NAME_LENGTH 40 #define SERVER_NAME_LEN_WITH_NULL (SERVER_NAME_LENGTH + 1) -/* used to define string lengths for reversing unicode strings */ -/* (256+1)*2 = 514 */ -/* (max path length + 1 for null) * 2 for unicode */ -#define MAX_NAME 514 - /* SMB echo "timeout" -- FIXME: tunable? */ #define SMB_ECHO_INTERVAL (60 * HZ) diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index 03ed8a09581c..36ca2045009b 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1600,6 +1600,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, tmp_end++; if (!(tmp_end < end && tmp_end[1] == delim)) { /* No it is not. Set the password to NULL */ + kfree(vol->password); vol->password = NULL; break; } @@ -1637,6 +1638,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, options = end; } + kfree(vol->password); /* Now build new password string */ temp_len = strlen(value); vol->password = kzalloc(temp_len+1, GFP_KERNEL); diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c index 3db0c5fd9a11..6cbd9c688cfe 100644 --- a/fs/cifs/dir.c +++ b/fs/cifs/dir.c @@ -497,6 +497,14 @@ cifs_atomic_open(struct inode *inode, struct dentry *direntry, goto out; } + if (file->f_flags & O_DIRECT && + CIFS_SB(inode->i_sb)->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) { + if (CIFS_SB(inode->i_sb)->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) + file->f_op = &cifs_file_direct_nobrl_ops; + else + file->f_op = &cifs_file_direct_ops; + } + file_info = cifs_new_fileinfo(&fid, file, tlink, oplock); if (file_info == NULL) { if (server->ops->close) diff --git a/fs/cifs/file.c b/fs/cifs/file.c index d5fec92e0360..5f29354b072a 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -467,6 +467,14 @@ int cifs_open(struct inode *inode, struct file *file) cifs_dbg(FYI, "inode = 0x%p file flags are 0x%x for %s\n", inode, file->f_flags, full_path); + if (file->f_flags & O_DIRECT && + cifs_sb->mnt_cifs_flags & CIFS_MOUNT_STRICT_IO) { + if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_BRL) + file->f_op = &cifs_file_direct_nobrl_ops; + else + file->f_op = &cifs_file_direct_ops; + } + if (server->oplocks) oplock = REQ_OPLOCK; else @@ -3560,15 +3568,9 @@ static int cifs_readpages(struct file *file, struct address_space *mapping, lru_cache_add_file(page); unlock_page(page); page_cache_release(page); - if (rc == -EAGAIN) - list_add_tail(&page->lru, &tmplist); } + /* Fallback to the readpage in error/reconnect cases */ kref_put(&rdata->refcount, cifs_readdata_release); - if (rc == -EAGAIN) { - /* Re-add pages to the page_list and retry */ - list_splice(&tmplist, page_list); - continue; - } break; } diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 949ec909ec9a..7899a40465b3 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -1720,7 +1720,10 @@ cifs_rename2(struct inode *source_dir, struct dentry *source_dentry, unlink_target: /* Try unlinking the target dentry if it's not negative */ if (target_dentry->d_inode && (rc == -EACCES || rc == -EEXIST)) { - tmprc = cifs_unlink(target_dir, target_dentry); + if (d_is_dir(target_dentry)) + tmprc = cifs_rmdir(target_dir, target_dentry); + else + tmprc = cifs_unlink(target_dir, target_dentry); if (tmprc) goto cifs_rename_exit; rc = cifs_do_rename(xid, source_dentry, from_name, diff --git a/fs/cifs/link.c b/fs/cifs/link.c index 68559fd557fb..5657416d3483 100644 --- a/fs/cifs/link.c +++ b/fs/cifs/link.c @@ -213,8 +213,12 @@ create_mf_symlink(const unsigned int xid, struct cifs_tcon *tcon, if (rc) goto out; - rc = tcon->ses->server->ops->create_mf_symlink(xid, tcon, cifs_sb, - fromName, buf, &bytes_written); + if (tcon->ses->server->ops->create_mf_symlink) + rc = tcon->ses->server->ops->create_mf_symlink(xid, tcon, + cifs_sb, fromName, buf, &bytes_written); + else + rc = -EOPNOTSUPP; + if (rc) goto out; @@ -339,9 +343,11 @@ cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, if (rc) return rc; - if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) + if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) { + rc = -ENOENT; /* it's not a symlink */ goto out; + } io_parms.netfid = fid.netfid; io_parms.pid = current->tgid; diff --git a/fs/cifs/netmisc.c b/fs/cifs/netmisc.c index 6834b9c3bec1..b333ff60781d 100644 --- a/fs/cifs/netmisc.c +++ b/fs/cifs/netmisc.c @@ -925,11 +925,23 @@ cifs_NTtimeToUnix(__le64 ntutc) /* BB what about the timezone? BB */ /* Subtract the NTFS time offset, then convert to 1s intervals. */ - u64 t; + s64 t = le64_to_cpu(ntutc) - NTFS_TIME_OFFSET; + + /* + * Unfortunately can not use normal 64 bit division on 32 bit arch, but + * the alternative, do_div, does not work with negative numbers so have + * to special case them + */ + if (t < 0) { + t = -t; + ts.tv_nsec = (long)(do_div(t, 10000000) * 100); + ts.tv_nsec = -ts.tv_nsec; + ts.tv_sec = -t; + } else { + ts.tv_nsec = (long)do_div(t, 10000000) * 100; + ts.tv_sec = t; + } - t = le64_to_cpu(ntutc) - NTFS_TIME_OFFSET; - ts.tv_nsec = do_div(t, 10000000) * 100; - ts.tv_sec = t; return ts; } diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c index 798c80a41c88..b334a89d6a66 100644 --- a/fs/cifs/readdir.c +++ b/fs/cifs/readdir.c @@ -596,8 +596,8 @@ find_cifs_entry(const unsigned int xid, struct cifs_tcon *tcon, loff_t pos, if (server->ops->dir_needs_close(cfile)) { cfile->invalidHandle = true; spin_unlock(&cifs_file_list_lock); - if (server->ops->close) - server->ops->close(xid, tcon, &cfile->fid); + if (server->ops->close_dir) + server->ops->close_dir(xid, tcon, &cfile->fid); } else spin_unlock(&cifs_file_list_lock); if (cfile->srch_inf.ntwrk_buf_start) { diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c index 39ee32688eac..57db63ff88da 100644 --- a/fs/cifs/sess.c +++ b/fs/cifs/sess.c @@ -243,10 +243,11 @@ static void decode_ascii_ssetup(char **pbcc_area, __u16 bleft, kfree(ses->serverOS); ses->serverOS = kzalloc(len + 1, GFP_KERNEL); - if (ses->serverOS) + if (ses->serverOS) { strncpy(ses->serverOS, bcc_ptr, len); - if (strncmp(ses->serverOS, "OS/2", 4) == 0) - cifs_dbg(FYI, "OS/2 server\n"); + if (strncmp(ses->serverOS, "OS/2", 4) == 0) + cifs_dbg(FYI, "OS/2 server\n"); + } bcc_ptr += len + 1; bleft -= len + 1; @@ -744,14 +745,6 @@ out: sess_free_buffer(sess_data); } -#else - -static void -sess_auth_lanman(struct sess_data *sess_data) -{ - sess_data->result = -EOPNOTSUPP; - sess_data->func = NULL; -} #endif static void @@ -1102,15 +1095,6 @@ out: ses->auth_key.response = NULL; } -#else - -static void -sess_auth_kerberos(struct sess_data *sess_data) -{ - cifs_dbg(VFS, "Kerberos negotiated but upcall support disabled!\n"); - sess_data->result = -ENOSYS; - sess_data->func = NULL; -} #endif /* ! CONFIG_CIFS_UPCALL */ /* diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c index 1a6df4b03f67..52131d8cb4d5 100644 --- a/fs/cifs/smb1ops.c +++ b/fs/cifs/smb1ops.c @@ -586,7 +586,7 @@ cifs_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, tmprc = CIFS_open(xid, &oparms, &oplock, NULL); if (tmprc == -EOPNOTSUPP) *symlink = true; - else + else if (tmprc == 0) CIFSSMBClose(xid, tcon, fid.netfid); } diff --git a/fs/cifs/smb2file.c b/fs/cifs/smb2file.c index 3f17b4550831..45992944e238 100644 --- a/fs/cifs/smb2file.c +++ b/fs/cifs/smb2file.c @@ -50,7 +50,7 @@ smb2_open_file(const unsigned int xid, struct cifs_open_parms *oparms, goto out; } - smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2, + smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2, GFP_KERNEL); if (smb2_data == NULL) { rc = -ENOMEM; diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c index 0150182a4494..899bbc86f73e 100644 --- a/fs/cifs/smb2inode.c +++ b/fs/cifs/smb2inode.c @@ -131,7 +131,7 @@ smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon, *adjust_tz = false; *symlink = false; - smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2, + smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2, GFP_KERNEL); if (smb2_data == NULL) return -ENOMEM; diff --git a/fs/cifs/smb2maperror.c b/fs/cifs/smb2maperror.c index af59d03db492..8257a5a97cc0 100644 --- a/fs/cifs/smb2maperror.c +++ b/fs/cifs/smb2maperror.c @@ -256,6 +256,8 @@ static const struct status_to_posix_error smb2_error_map_table[] = { {STATUS_DLL_MIGHT_BE_INCOMPATIBLE, -EIO, "STATUS_DLL_MIGHT_BE_INCOMPATIBLE"}, {STATUS_STOPPED_ON_SYMLINK, -EOPNOTSUPP, "STATUS_STOPPED_ON_SYMLINK"}, + {STATUS_IO_REPARSE_TAG_NOT_HANDLED, -EOPNOTSUPP, + "STATUS_REPARSE_NOT_HANDLED"}, {STATUS_DEVICE_REQUIRES_CLEANING, -EIO, "STATUS_DEVICE_REQUIRES_CLEANING"}, {STATUS_DEVICE_DOOR_OPEN, -EIO, "STATUS_DEVICE_DOOR_OPEN"}, diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 5a48aa290dfe..f522193b7184 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -389,7 +389,7 @@ smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon, int rc; struct smb2_file_all_info *smb2_data; - smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + MAX_NAME * 2, + smb2_data = kzalloc(sizeof(struct smb2_file_all_info) + PATH_MAX * 2, GFP_KERNEL); if (smb2_data == NULL) return -ENOMEM; @@ -1035,7 +1035,7 @@ static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon, if (keep_size == false) return -EOPNOTSUPP; - /* + /* * Must check if file sparse since fallocate -z (zero range) assumes * non-sparse allocation */ diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index fa0dd044213b..74b3a6684383 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -530,7 +530,7 @@ SMB2_sess_setup(const unsigned int xid, struct cifs_ses *ses, struct smb2_sess_setup_rsp *rsp = NULL; struct kvec iov[2]; int rc = 0; - int resp_buftype; + int resp_buftype = CIFS_NO_BUFFER; __le32 phase = NtLmNegotiate; /* NTLMSSP, if needed, is multistage */ struct TCP_Server_Info *server = ses->server; u16 blob_length = 0; @@ -1403,8 +1403,7 @@ SMB2_close(const unsigned int xid, struct cifs_tcon *tcon, rsp = (struct smb2_close_rsp *)iov[0].iov_base; if (rc != 0) { - if (tcon) - cifs_stats_fail_inc(tcon, SMB2_CLOSE_HE); + cifs_stats_fail_inc(tcon, SMB2_CLOSE_HE); goto close_exit; } @@ -1533,7 +1532,7 @@ SMB2_query_info(const unsigned int xid, struct cifs_tcon *tcon, { return query_info(xid, tcon, persistent_fid, volatile_fid, FILE_ALL_INFORMATION, - sizeof(struct smb2_file_all_info) + MAX_NAME * 2, + sizeof(struct smb2_file_all_info) + PATH_MAX * 2, sizeof(struct smb2_file_all_info), data); } diff --git a/fs/dcache.c b/fs/dcache.c index d30ce699ae4b..cb25a1a5e307 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -106,8 +106,7 @@ static inline struct hlist_bl_head *d_hash(const struct dentry *parent, unsigned int hash) { hash += (unsigned long) parent / L1_CACHE_BYTES; - hash = hash + (hash >> d_hash_shift); - return dentry_hashtable + (hash & d_hash_mask); + return dentry_hashtable + hash_32(hash, d_hash_shift); } /* Statistics gathering. */ @@ -2373,7 +2372,8 @@ void dentry_update_name_case(struct dentry *dentry, struct qstr *name) } EXPORT_SYMBOL(dentry_update_name_case); -static void switch_names(struct dentry *dentry, struct dentry *target) +static void switch_names(struct dentry *dentry, struct dentry *target, + bool exchange) { if (dname_external(target)) { if (dname_external(dentry)) { @@ -2407,13 +2407,19 @@ static void switch_names(struct dentry *dentry, struct dentry *target) */ unsigned int i; BUILD_BUG_ON(!IS_ALIGNED(DNAME_INLINE_LEN, sizeof(long))); + if (!exchange) { + memcpy(dentry->d_iname, target->d_name.name, + target->d_name.len + 1); + dentry->d_name.hash_len = target->d_name.hash_len; + return; + } for (i = 0; i < DNAME_INLINE_LEN / sizeof(long); i++) { swap(((long *) &dentry->d_iname)[i], ((long *) &target->d_iname)[i]); } } } - swap(dentry->d_name.len, target->d_name.len); + swap(dentry->d_name.hash_len, target->d_name.hash_len); } static void dentry_lock_for_move(struct dentry *dentry, struct dentry *target) @@ -2443,25 +2449,29 @@ static void dentry_lock_for_move(struct dentry *dentry, struct dentry *target) } } -static void dentry_unlock_parents_for_move(struct dentry *dentry, - struct dentry *target) +static void dentry_unlock_for_move(struct dentry *dentry, struct dentry *target) { if (target->d_parent != dentry->d_parent) spin_unlock(&dentry->d_parent->d_lock); if (target->d_parent != target) spin_unlock(&target->d_parent->d_lock); + spin_unlock(&target->d_lock); + spin_unlock(&dentry->d_lock); } /* * When switching names, the actual string doesn't strictly have to * be preserved in the target - because we're dropping the target * anyway. As such, we can just do a simple memcpy() to copy over - * the new name before we switch. - * - * Note that we have to be a lot more careful about getting the hash - * switched - we have to switch the hash value properly even if it - * then no longer matches the actual (corrupted) string of the target. - * The hash value has to match the hash queue that the dentry is on.. + * the new name before we switch, unless we are going to rehash + * it. Note that if we *do* unhash the target, we are not allowed + * to rehash it without giving it a new name/hash key - whether + * we swap or overwrite the names here, resulting name won't match + * the reality in filesystem; it's only there for d_path() purposes. + * Note that all of this is happening under rename_lock, so the + * any hash lookup seeing it in the middle of manipulations will + * be discarded anyway. So we do not care what happens to the hash + * key in that case. */ /* * __d_move - move a dentry @@ -2507,36 +2517,30 @@ static void __d_move(struct dentry *dentry, struct dentry *target, d_hash(dentry->d_parent, dentry->d_name.hash)); } - list_del(&dentry->d_u.d_child); - list_del(&target->d_u.d_child); - /* Switch the names.. */ - switch_names(dentry, target); - swap(dentry->d_name.hash, target->d_name.hash); + switch_names(dentry, target, exchange); - /* ... and switch the parents */ + /* ... and switch them in the tree */ if (IS_ROOT(dentry)) { + /* splicing a tree */ dentry->d_parent = target->d_parent; target->d_parent = target; - INIT_LIST_HEAD(&target->d_u.d_child); + list_del_init(&target->d_u.d_child); + list_move(&dentry->d_u.d_child, &dentry->d_parent->d_subdirs); } else { + /* swapping two dentries */ swap(dentry->d_parent, target->d_parent); - - /* And add them back to the (new) parent lists */ - list_add(&target->d_u.d_child, &target->d_parent->d_subdirs); + list_move(&target->d_u.d_child, &target->d_parent->d_subdirs); + list_move(&dentry->d_u.d_child, &dentry->d_parent->d_subdirs); + if (exchange) + fsnotify_d_move(target); + fsnotify_d_move(dentry); } - list_add(&dentry->d_u.d_child, &dentry->d_parent->d_subdirs); - write_seqcount_end(&target->d_seq); write_seqcount_end(&dentry->d_seq); - dentry_unlock_parents_for_move(dentry, target); - if (exchange) - fsnotify_d_move(target); - spin_unlock(&target->d_lock); - fsnotify_d_move(dentry); - spin_unlock(&dentry->d_lock); + dentry_unlock_for_move(dentry, target); } /* @@ -2634,39 +2638,6 @@ out_err: return ret; } -/* - * Prepare an anonymous dentry for life in the superblock's dentry tree as a - * named dentry in place of the dentry to be replaced. - * returns with anon->d_lock held! - */ -static void __d_materialise_dentry(struct dentry *dentry, struct dentry *anon) -{ - struct dentry *dparent; - - dentry_lock_for_move(anon, dentry); - - write_seqcount_begin(&dentry->d_seq); - write_seqcount_begin_nested(&anon->d_seq, DENTRY_D_LOCK_NESTED); - - dparent = dentry->d_parent; - - switch_names(dentry, anon); - swap(dentry->d_name.hash, anon->d_name.hash); - - dentry->d_parent = dentry; - list_del_init(&dentry->d_u.d_child); - anon->d_parent = dparent; - list_move(&anon->d_u.d_child, &dparent->d_subdirs); - - write_seqcount_end(&dentry->d_seq); - write_seqcount_end(&anon->d_seq); - - dentry_unlock_parents_for_move(anon, dentry); - spin_unlock(&dentry->d_lock); - - /* anon->d_lock still locked, returns locked */ -} - /** * d_splice_alias - splice a disconnected dentry into the tree if one exists * @inode: the inode which may have a disconnected dentry @@ -2712,11 +2683,8 @@ struct dentry *d_splice_alias(struct inode *inode, struct dentry *dentry) return ERR_PTR(-EIO); } write_seqlock(&rename_lock); - __d_materialise_dentry(dentry, new); + __d_move(new, dentry, false); write_sequnlock(&rename_lock); - __d_drop(new); - _d_rehash(new); - spin_unlock(&new->d_lock); spin_unlock(&inode->i_lock); security_d_instantiate(new, inode); iput(inode); @@ -2776,9 +2744,8 @@ struct dentry *d_materialise_unique(struct dentry *dentry, struct inode *inode) } else if (IS_ROOT(alias)) { /* Is this an anonymous mountpoint that we * could splice into our tree? */ - __d_materialise_dentry(dentry, alias); + __d_move(alias, dentry, false); write_sequnlock(&rename_lock); - __d_drop(alias); goto found; } else { /* Nope, but we must(!) avoid directory @@ -2804,13 +2771,9 @@ struct dentry *d_materialise_unique(struct dentry *dentry, struct inode *inode) actual = __d_instantiate_unique(dentry, inode); if (!actual) actual = dentry; - else - BUG_ON(!d_unhashed(actual)); - spin_lock(&actual->d_lock); + d_rehash(actual); found: - _d_rehash(actual); - spin_unlock(&actual->d_lock); spin_unlock(&inode->i_lock); out_nolock: if (actual == dentry) { diff --git a/fs/direct-io.c b/fs/direct-io.c index c3116404ab49..e181b6b2e297 100644 --- a/fs/direct-io.c +++ b/fs/direct-io.c @@ -158,7 +158,7 @@ static inline int dio_refill_pages(struct dio *dio, struct dio_submit *sdio) { ssize_t ret; - ret = iov_iter_get_pages(sdio->iter, dio->pages, DIO_PAGES, + ret = iov_iter_get_pages(sdio->iter, dio->pages, LONG_MAX, DIO_PAGES, &sdio->from); if (ret < 0 && sdio->blocks_available && (dio->rw & WRITE)) { diff --git a/fs/eventpoll.c b/fs/eventpoll.c index b10b48c2a7af..7bcfff900f05 100644 --- a/fs/eventpoll.c +++ b/fs/eventpoll.c @@ -1852,7 +1852,8 @@ SYSCALL_DEFINE4(epoll_ctl, int, epfd, int, op, int, fd, goto error_tgt_fput; /* Check if EPOLLWAKEUP is allowed */ - ep_take_care_of_epollwakeup(&epds); + if (ep_op_has_event(op)) + ep_take_care_of_epollwakeup(&epds); /* * We have to check that the file structure underneath the file descriptor diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 5b19760b1de5..b0c225cdb52c 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1825,7 +1825,7 @@ ext4_group_first_block_no(struct super_block *sb, ext4_group_t group_no) /* * Special error return code only used by dx_probe() and its callers. */ -#define ERR_BAD_DX_DIR -75000 +#define ERR_BAD_DX_DIR (-(MAX_ERRNO - 1)) /* * Timeout and state flag for lazy initialization inode thread. @@ -2454,6 +2454,22 @@ static inline void ext4_update_i_disksize(struct inode *inode, loff_t newsize) up_write(&EXT4_I(inode)->i_data_sem); } +/* Update i_size, i_disksize. Requires i_mutex to avoid races with truncate */ +static inline int ext4_update_inode_size(struct inode *inode, loff_t newsize) +{ + int changed = 0; + + if (newsize > inode->i_size) { + i_size_write(inode, newsize); + changed = 1; + } + if (newsize > EXT4_I(inode)->i_disksize) { + ext4_update_i_disksize(inode, newsize); + changed |= 2; + } + return changed; +} + struct ext4_group_info { unsigned long bb_state; struct rb_root bb_free_root; diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index 76c2df382b7d..74292a71b384 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -4665,7 +4665,8 @@ retry: } static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset, - ext4_lblk_t len, int flags, int mode) + ext4_lblk_t len, loff_t new_size, + int flags, int mode) { struct inode *inode = file_inode(file); handle_t *handle; @@ -4674,8 +4675,10 @@ static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset, int retries = 0; struct ext4_map_blocks map; unsigned int credits; + loff_t epos; map.m_lblk = offset; + map.m_len = len; /* * Don't normalize the request if it can fit in one extent so * that it doesn't get unnecessarily split into multiple @@ -4690,9 +4693,7 @@ static int ext4_alloc_file_blocks(struct file *file, ext4_lblk_t offset, credits = ext4_chunk_trans_blocks(inode, len); retry: - while (ret >= 0 && ret < len) { - map.m_lblk = map.m_lblk + ret; - map.m_len = len = len - ret; + while (ret >= 0 && len) { handle = ext4_journal_start(inode, EXT4_HT_MAP_BLOCKS, credits); if (IS_ERR(handle)) { @@ -4709,6 +4710,21 @@ retry: ret2 = ext4_journal_stop(handle); break; } + map.m_lblk += ret; + map.m_len = len = len - ret; + epos = (loff_t)map.m_lblk << inode->i_blkbits; + inode->i_ctime = ext4_current_time(inode); + if (new_size) { + if (epos > new_size) + epos = new_size; + if (ext4_update_inode_size(inode, epos) & 0x1) + inode->i_mtime = inode->i_ctime; + } else { + if (epos > inode->i_size) + ext4_set_inode_flag(inode, + EXT4_INODE_EOFBLOCKS); + } + ext4_mark_inode_dirty(handle, inode); ret2 = ext4_journal_stop(handle); if (ret2) break; @@ -4731,7 +4747,8 @@ static long ext4_zero_range(struct file *file, loff_t offset, loff_t new_size = 0; int ret = 0; int flags; - int partial; + int credits; + int partial_begin, partial_end; loff_t start, end; ext4_lblk_t lblk; struct address_space *mapping = inode->i_mapping; @@ -4771,7 +4788,8 @@ static long ext4_zero_range(struct file *file, loff_t offset, if (start < offset || end > offset + len) return -EINVAL; - partial = (offset + len) & ((1 << blkbits) - 1); + partial_begin = offset & ((1 << blkbits) - 1); + partial_end = (offset + len) & ((1 << blkbits) - 1); lblk = start >> blkbits; max_blocks = (end >> blkbits); @@ -4805,7 +4823,7 @@ static long ext4_zero_range(struct file *file, loff_t offset, * If we have a partial block after EOF we have to allocate * the entire block. */ - if (partial) + if (partial_end) max_blocks += 1; } @@ -4813,6 +4831,7 @@ static long ext4_zero_range(struct file *file, loff_t offset, /* Now release the pages and zero block aligned part of pages*/ truncate_pagecache_range(inode, start, end - 1); + inode->i_mtime = inode->i_ctime = ext4_current_time(inode); /* Wait all existing dio workers, newcomers will block on i_mutex */ ext4_inode_block_unlocked_dio(inode); @@ -4825,13 +4844,22 @@ static long ext4_zero_range(struct file *file, loff_t offset, if (ret) goto out_dio; - ret = ext4_alloc_file_blocks(file, lblk, max_blocks, flags, - mode); + ret = ext4_alloc_file_blocks(file, lblk, max_blocks, new_size, + flags, mode); if (ret) goto out_dio; } + if (!partial_begin && !partial_end) + goto out_dio; - handle = ext4_journal_start(inode, EXT4_HT_MISC, 4); + /* + * In worst case we have to writeout two nonadjacent unwritten + * blocks and update the inode + */ + credits = (2 * ext4_ext_index_trans_blocks(inode, 2)) + 1; + if (ext4_should_journal_data(inode)) + credits += 2; + handle = ext4_journal_start(inode, EXT4_HT_MISC, credits); if (IS_ERR(handle)) { ret = PTR_ERR(handle); ext4_std_error(inode->i_sb, ret); @@ -4839,12 +4867,8 @@ static long ext4_zero_range(struct file *file, loff_t offset, } inode->i_mtime = inode->i_ctime = ext4_current_time(inode); - if (new_size) { - if (new_size > i_size_read(inode)) - i_size_write(inode, new_size); - if (new_size > EXT4_I(inode)->i_disksize) - ext4_update_i_disksize(inode, new_size); + ext4_update_inode_size(inode, new_size); } else { /* * Mark that we allocate beyond EOF so the subsequent truncate @@ -4853,7 +4877,6 @@ static long ext4_zero_range(struct file *file, loff_t offset, if ((offset + len) > i_size_read(inode)) ext4_set_inode_flag(inode, EXT4_INODE_EOFBLOCKS); } - ext4_mark_inode_dirty(handle, inode); /* Zero out partial block at the edges of the range */ @@ -4880,13 +4903,11 @@ out_mutex: long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len) { struct inode *inode = file_inode(file); - handle_t *handle; loff_t new_size = 0; unsigned int max_blocks; int ret = 0; int flags; ext4_lblk_t lblk; - struct timespec tv; unsigned int blkbits = inode->i_blkbits; /* Return error if mode is not supported */ @@ -4937,36 +4958,15 @@ long ext4_fallocate(struct file *file, int mode, loff_t offset, loff_t len) goto out; } - ret = ext4_alloc_file_blocks(file, lblk, max_blocks, flags, mode); + ret = ext4_alloc_file_blocks(file, lblk, max_blocks, new_size, + flags, mode); if (ret) goto out; - handle = ext4_journal_start(inode, EXT4_HT_INODE, 2); - if (IS_ERR(handle)) - goto out; - - tv = inode->i_ctime = ext4_current_time(inode); - - if (new_size) { - if (new_size > i_size_read(inode)) { - i_size_write(inode, new_size); - inode->i_mtime = tv; - } - if (new_size > EXT4_I(inode)->i_disksize) - ext4_update_i_disksize(inode, new_size); - } else { - /* - * Mark that we allocate beyond EOF so the subsequent truncate - * can proceed even if the new size is the same as i_size. - */ - if ((offset + len) > i_size_read(inode)) - ext4_set_inode_flag(inode, EXT4_INODE_EOFBLOCKS); + if (file->f_flags & O_SYNC && EXT4_SB(inode->i_sb)->s_journal) { + ret = jbd2_complete_transaction(EXT4_SB(inode->i_sb)->s_journal, + EXT4_I(inode)->i_sync_tid); } - ext4_mark_inode_dirty(handle, inode); - if (file->f_flags & O_SYNC) - ext4_handle_sync(handle); - - ext4_journal_stop(handle); out: mutex_unlock(&inode->i_mutex); trace_ext4_fallocate_exit(inode, offset, max_blocks, ret); diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 367a60c07cf0..3aa26e9117c4 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -1055,27 +1055,11 @@ static int ext4_write_end(struct file *file, } else copied = block_write_end(file, mapping, pos, len, copied, page, fsdata); - /* - * No need to use i_size_read() here, the i_size - * cannot change under us because we hole i_mutex. - * - * But it's important to update i_size while still holding page lock: + * it's important to update i_size while still holding page lock: * page writeout could otherwise come in and zero beyond i_size. */ - if (pos + copied > inode->i_size) { - i_size_write(inode, pos + copied); - i_size_changed = 1; - } - - if (pos + copied > EXT4_I(inode)->i_disksize) { - /* We need to mark inode dirty even if - * new_i_size is less that inode->i_size - * but greater than i_disksize. (hint delalloc) - */ - ext4_update_i_disksize(inode, (pos + copied)); - i_size_changed = 1; - } + i_size_changed = ext4_update_inode_size(inode, pos + copied); unlock_page(page); page_cache_release(page); @@ -1123,7 +1107,7 @@ static int ext4_journalled_write_end(struct file *file, int ret = 0, ret2; int partial = 0; unsigned from, to; - loff_t new_i_size; + int size_changed = 0; trace_ext4_journalled_write_end(inode, pos, len, copied); from = pos & (PAGE_CACHE_SIZE - 1); @@ -1146,20 +1130,18 @@ static int ext4_journalled_write_end(struct file *file, if (!partial) SetPageUptodate(page); } - new_i_size = pos + copied; - if (new_i_size > inode->i_size) - i_size_write(inode, pos+copied); + size_changed = ext4_update_inode_size(inode, pos + copied); ext4_set_inode_state(inode, EXT4_STATE_JDATA); EXT4_I(inode)->i_datasync_tid = handle->h_transaction->t_tid; - if (new_i_size > EXT4_I(inode)->i_disksize) { - ext4_update_i_disksize(inode, new_i_size); + unlock_page(page); + page_cache_release(page); + + if (size_changed) { ret2 = ext4_mark_inode_dirty(handle, inode); if (!ret) ret = ret2; } - unlock_page(page); - page_cache_release(page); if (pos + len > inode->i_size && ext4_can_truncate(inode)) /* if we have allocated more blocks and copied * less. We will have blocks allocated outside @@ -2095,6 +2077,7 @@ static int mpage_map_and_submit_extent(handle_t *handle, struct ext4_map_blocks *map = &mpd->map; int err; loff_t disksize; + int progress = 0; mpd->io_submit.io_end->offset = ((loff_t)map->m_lblk) << inode->i_blkbits; @@ -2111,8 +2094,11 @@ static int mpage_map_and_submit_extent(handle_t *handle, * is non-zero, a commit should free up blocks. */ if ((err == -ENOMEM) || - (err == -ENOSPC && ext4_count_free_clusters(sb))) + (err == -ENOSPC && ext4_count_free_clusters(sb))) { + if (progress) + goto update_disksize; return err; + } ext4_msg(sb, KERN_CRIT, "Delayed block allocation failed for " "inode %lu at logical offset %llu with" @@ -2129,15 +2115,17 @@ static int mpage_map_and_submit_extent(handle_t *handle, *give_up_on_write = true; return err; } + progress = 1; /* * Update buffer state, submit mapped pages, and get us new * extent to map */ err = mpage_map_and_submit_buffers(mpd); if (err < 0) - return err; + goto update_disksize; } while (map->m_len); +update_disksize: /* * Update on-disk size after IO is submitted. Races with * truncate are avoided by checking i_size under i_data_sem. diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index 956027711faf..8b0f9ef517d6 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -1412,6 +1412,8 @@ static void mb_free_blocks(struct inode *inode, struct ext4_buddy *e4b, int last = first + count - 1; struct super_block *sb = e4b->bd_sb; + if (WARN_ON(count == 0)) + return; BUG_ON(last >= (sb->s_blocksize << 3)); assert_spin_locked(ext4_group_lock_ptr(sb, e4b->bd_group)); /* Don't bother if the block group is corrupt. */ @@ -3221,6 +3223,8 @@ static void ext4_discard_allocated_blocks(struct ext4_allocation_context *ac) int err; if (pa == NULL) { + if (ac->ac_f_ex.fe_len == 0) + return; err = ext4_mb_load_buddy(ac->ac_sb, ac->ac_f_ex.fe_group, &e4b); if (err) { /* @@ -3235,6 +3239,7 @@ static void ext4_discard_allocated_blocks(struct ext4_allocation_context *ac) mb_free_blocks(ac->ac_inode, &e4b, ac->ac_f_ex.fe_start, ac->ac_f_ex.fe_len); ext4_unlock_group(ac->ac_sb, ac->ac_f_ex.fe_group); + ext4_mb_unload_buddy(&e4b); return; } if (pa->pa_type == MB_INODE_PA) diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index b147a67baa0d..603e4ebbd0ac 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -1227,7 +1227,7 @@ static struct buffer_head * ext4_find_entry (struct inode *dir, buffer */ int num = 0; ext4_lblk_t nblocks; - int i, err; + int i, err = 0; int namelen; *res_dir = NULL; @@ -1264,7 +1264,11 @@ static struct buffer_head * ext4_find_entry (struct inode *dir, * return. Otherwise, fall back to doing a search the * old fashioned way. */ - if (bh || (err != ERR_BAD_DX_DIR)) + if (err == -ENOENT) + return NULL; + if (err && err != ERR_BAD_DX_DIR) + return ERR_PTR(err); + if (bh) return bh; dxtrace(printk(KERN_DEBUG "ext4_find_entry: dx failed, " "falling back\n")); @@ -1295,6 +1299,11 @@ restart: } num++; bh = ext4_getblk(NULL, dir, b++, 0, &err); + if (unlikely(err)) { + if (ra_max == 0) + return ERR_PTR(err); + break; + } bh_use[ra_max] = bh; if (bh) ll_rw_block(READ | REQ_META | REQ_PRIO, @@ -1417,6 +1426,8 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsi return ERR_PTR(-ENAMETOOLONG); bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL); + if (IS_ERR(bh)) + return (struct dentry *) bh; inode = NULL; if (bh) { __u32 ino = le32_to_cpu(de->inode); @@ -1450,6 +1461,8 @@ struct dentry *ext4_get_parent(struct dentry *child) struct buffer_head *bh; bh = ext4_find_entry(child->d_inode, &dotdot, &de, NULL); + if (IS_ERR(bh)) + return (struct dentry *) bh; if (!bh) return ERR_PTR(-ENOENT); ino = le32_to_cpu(de->inode); @@ -2727,6 +2740,8 @@ static int ext4_rmdir(struct inode *dir, struct dentry *dentry) retval = -ENOENT; bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL); + if (IS_ERR(bh)) + return PTR_ERR(bh); if (!bh) goto end_rmdir; @@ -2794,6 +2809,8 @@ static int ext4_unlink(struct inode *dir, struct dentry *dentry) retval = -ENOENT; bh = ext4_find_entry(dir, &dentry->d_name, &de, NULL); + if (IS_ERR(bh)) + return PTR_ERR(bh); if (!bh) goto end_unlink; @@ -3121,6 +3138,8 @@ static int ext4_find_delete_entry(handle_t *handle, struct inode *dir, struct ext4_dir_entry_2 *de; bh = ext4_find_entry(dir, d_name, &de, NULL); + if (IS_ERR(bh)) + return PTR_ERR(bh); if (bh) { retval = ext4_delete_entry(handle, dir, de, bh); brelse(bh); @@ -3128,7 +3147,8 @@ static int ext4_find_delete_entry(handle_t *handle, struct inode *dir, return retval; } -static void ext4_rename_delete(handle_t *handle, struct ext4_renament *ent) +static void ext4_rename_delete(handle_t *handle, struct ext4_renament *ent, + int force_reread) { int retval; /* @@ -3140,7 +3160,8 @@ static void ext4_rename_delete(handle_t *handle, struct ext4_renament *ent) if (le32_to_cpu(ent->de->inode) != ent->inode->i_ino || ent->de->name_len != ent->dentry->d_name.len || strncmp(ent->de->name, ent->dentry->d_name.name, - ent->de->name_len)) { + ent->de->name_len) || + force_reread) { retval = ext4_find_delete_entry(handle, ent->dir, &ent->dentry->d_name); } else { @@ -3191,6 +3212,7 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, .dentry = new_dentry, .inode = new_dentry->d_inode, }; + int force_reread; int retval; dquot_initialize(old.dir); @@ -3202,6 +3224,8 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, dquot_initialize(new.inode); old.bh = ext4_find_entry(old.dir, &old.dentry->d_name, &old.de, NULL); + if (IS_ERR(old.bh)) + return PTR_ERR(old.bh); /* * Check for inode number is _not_ due to possible IO errors. * We might rmdir the source, keep it as pwd of some process @@ -3214,6 +3238,11 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, new.bh = ext4_find_entry(new.dir, &new.dentry->d_name, &new.de, &new.inlined); + if (IS_ERR(new.bh)) { + retval = PTR_ERR(new.bh); + new.bh = NULL; + goto end_rename; + } if (new.bh) { if (!new.inode) { brelse(new.bh); @@ -3246,6 +3275,15 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, if (retval) goto end_rename; } + /* + * If we're renaming a file within an inline_data dir and adding or + * setting the new dirent causes a conversion from inline_data to + * extents/blockmap, we need to force the dirent delete code to + * re-read the directory, or else we end up trying to delete a dirent + * from what is now the extent tree root (or a block map). + */ + force_reread = (new.dir->i_ino == old.dir->i_ino && + ext4_test_inode_flag(new.dir, EXT4_INODE_INLINE_DATA)); if (!new.bh) { retval = ext4_add_entry(handle, new.dentry, old.inode); if (retval) @@ -3256,6 +3294,9 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, if (retval) goto end_rename; } + if (force_reread) + force_reread = !ext4_test_inode_flag(new.dir, + EXT4_INODE_INLINE_DATA); /* * Like most other Unix systems, set the ctime for inodes on a @@ -3267,7 +3308,7 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, /* * ok, that's it */ - ext4_rename_delete(handle, &old); + ext4_rename_delete(handle, &old, force_reread); if (new.inode) { ext4_dec_count(handle, new.inode); @@ -3330,6 +3371,8 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry, old.bh = ext4_find_entry(old.dir, &old.dentry->d_name, &old.de, &old.inlined); + if (IS_ERR(old.bh)) + return PTR_ERR(old.bh); /* * Check for inode number is _not_ due to possible IO errors. * We might rmdir the source, keep it as pwd of some process @@ -3342,6 +3385,11 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry, new.bh = ext4_find_entry(new.dir, &new.dentry->d_name, &new.de, &new.inlined); + if (IS_ERR(new.bh)) { + retval = PTR_ERR(new.bh); + new.bh = NULL; + goto end_rename; + } /* RENAME_EXCHANGE case: old *and* new must both exist */ if (!new.bh || le32_to_cpu(new.de->inode) != new.inode->i_ino) diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c index bb0e80f03e2e..1e43b905ff98 100644 --- a/fs/ext4/resize.c +++ b/fs/ext4/resize.c @@ -575,6 +575,7 @@ handle_bb: bh = bclean(handle, sb, block); if (IS_ERR(bh)) { err = PTR_ERR(bh); + bh = NULL; goto out; } overhead = ext4_group_overhead_blocks(sb, group); @@ -603,6 +604,7 @@ handle_ib: bh = bclean(handle, sb, block); if (IS_ERR(bh)) { err = PTR_ERR(bh); + bh = NULL; goto out; } diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 32b43ad154b9..0b28b36e7915 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3181,9 +3181,9 @@ static int set_journal_csum_feature_set(struct super_block *sb) if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_METADATA_CSUM)) { - /* journal checksum v2 */ + /* journal checksum v3 */ compat = 0; - incompat = JBD2_FEATURE_INCOMPAT_CSUM_V2; + incompat = JBD2_FEATURE_INCOMPAT_CSUM_V3; } else { /* journal checksum v1 */ compat = JBD2_FEATURE_COMPAT_CHECKSUM; @@ -3205,6 +3205,7 @@ static int set_journal_csum_feature_set(struct super_block *sb) jbd2_journal_clear_features(sbi->s_journal, JBD2_FEATURE_COMPAT_CHECKSUM, 0, JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT | + JBD2_FEATURE_INCOMPAT_CSUM_V3 | JBD2_FEATURE_INCOMPAT_CSUM_V2); } diff --git a/fs/f2fs/Kconfig b/fs/f2fs/Kconfig index 214fe1054fce..736a348509f7 100644 --- a/fs/f2fs/Kconfig +++ b/fs/f2fs/Kconfig @@ -23,7 +23,7 @@ config F2FS_STAT_FS mounted as f2fs. Each file shows the whole f2fs information. /sys/kernel/debug/f2fs/status includes: - - major file system information managed by f2fs currently + - major filesystem information managed by f2fs currently - average SIT information about whole segments - current memory footprint consumed by f2fs. @@ -68,6 +68,6 @@ config F2FS_CHECK_FS bool "F2FS consistency checking feature" depends on F2FS_FS help - Enables BUG_ONs which check the file system consistency in runtime. + Enables BUG_ONs which check the filesystem consistency in runtime. If you want to improve the performance, say N. diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 6aeed5bada52..dd10a031c052 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -72,7 +72,22 @@ out: return page; } -static inline int get_max_meta_blks(struct f2fs_sb_info *sbi, int type) +struct page *get_meta_page_ra(struct f2fs_sb_info *sbi, pgoff_t index) +{ + bool readahead = false; + struct page *page; + + page = find_get_page(META_MAPPING(sbi), index); + if (!page || (page && !PageUptodate(page))) + readahead = true; + f2fs_put_page(page, 0); + + if (readahead) + ra_meta_pages(sbi, index, MAX_BIO_BLOCKS(sbi), META_POR); + return get_meta_page(sbi, index); +} + +static inline block_t get_max_meta_blks(struct f2fs_sb_info *sbi, int type) { switch (type) { case META_NAT: @@ -82,6 +97,8 @@ static inline int get_max_meta_blks(struct f2fs_sb_info *sbi, int type) case META_SSA: case META_CP: return 0; + case META_POR: + return MAX_BLKADDR(sbi); default: BUG(); } @@ -90,12 +107,12 @@ static inline int get_max_meta_blks(struct f2fs_sb_info *sbi, int type) /* * Readahead CP/NAT/SIT/SSA pages */ -int ra_meta_pages(struct f2fs_sb_info *sbi, int start, int nrpages, int type) +int ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages, int type) { block_t prev_blk_addr = 0; struct page *page; - int blkno = start; - int max_blks = get_max_meta_blks(sbi, type); + block_t blkno = start; + block_t max_blks = get_max_meta_blks(sbi, type); struct f2fs_io_info fio = { .type = META, @@ -125,7 +142,11 @@ int ra_meta_pages(struct f2fs_sb_info *sbi, int start, int nrpages, int type) break; case META_SSA: case META_CP: - /* get ssa/cp block addr */ + case META_POR: + if (unlikely(blkno >= max_blks)) + goto out; + if (unlikely(blkno < SEG0_BLKADDR(sbi))) + goto out; blk_addr = blkno; break; default: @@ -151,8 +172,7 @@ out: static int f2fs_write_meta_page(struct page *page, struct writeback_control *wbc) { - struct inode *inode = page->mapping->host; - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_P_SB(page); trace_f2fs_writepage(page, META); @@ -160,14 +180,11 @@ static int f2fs_write_meta_page(struct page *page, goto redirty_out; if (wbc->for_reclaim) goto redirty_out; - - /* Should not write any meta pages, if any IO error was occurred */ - if (unlikely(is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ERROR_FLAG))) - goto no_write; + if (unlikely(f2fs_cp_error(sbi))) + goto redirty_out; f2fs_wait_on_page_writeback(page, META); write_meta_page(sbi, page); -no_write: dec_page_count(sbi, F2FS_DIRTY_META); unlock_page(page); return 0; @@ -180,7 +197,7 @@ redirty_out: static int f2fs_write_meta_pages(struct address_space *mapping, struct writeback_control *wbc) { - struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb); + struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); long diff, written; trace_f2fs_writepages(mapping->host, wbc, META); @@ -262,15 +279,12 @@ continue_unlock: static int f2fs_set_meta_page_dirty(struct page *page) { - struct address_space *mapping = page->mapping; - struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb); - trace_f2fs_set_page_dirty(page, META); SetPageUptodate(page); if (!PageDirty(page)) { __set_page_dirty_nobuffers(page); - inc_page_count(sbi, F2FS_DIRTY_META); + inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_META); return 1; } return 0; @@ -348,7 +362,7 @@ bool exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode) return e ? true : false; } -static void release_dirty_inode(struct f2fs_sb_info *sbi) +void release_dirty_inode(struct f2fs_sb_info *sbi) { struct ino_entry *e, *tmp; int i; @@ -381,7 +395,7 @@ int acquire_orphan_inode(struct f2fs_sb_info *sbi) void release_orphan_inode(struct f2fs_sb_info *sbi) { spin_lock(&sbi->ino_lock[ORPHAN_INO]); - f2fs_bug_on(sbi->n_orphans == 0); + f2fs_bug_on(sbi, sbi->n_orphans == 0); sbi->n_orphans--; spin_unlock(&sbi->ino_lock[ORPHAN_INO]); } @@ -401,7 +415,7 @@ void remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) static void recover_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino) { struct inode *inode = f2fs_iget(sbi->sb, ino); - f2fs_bug_on(IS_ERR(inode)); + f2fs_bug_on(sbi, IS_ERR(inode)); clear_nlink(inode); /* truncate all the data during iput */ @@ -446,8 +460,8 @@ static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) struct f2fs_orphan_block *orphan_blk = NULL; unsigned int nentries = 0; unsigned short index; - unsigned short orphan_blocks = (unsigned short)((sbi->n_orphans + - (F2FS_ORPHANS_PER_BLOCK - 1)) / F2FS_ORPHANS_PER_BLOCK); + unsigned short orphan_blocks = + (unsigned short)GET_ORPHAN_BLOCKS(sbi->n_orphans); struct page *page = NULL; struct ino_entry *orphan = NULL; @@ -462,7 +476,7 @@ static void write_orphan_inodes(struct f2fs_sb_info *sbi, block_t start_blk) list_for_each_entry(orphan, head, list) { if (!page) { page = find_get_page(META_MAPPING(sbi), start_blk++); - f2fs_bug_on(!page); + f2fs_bug_on(sbi, !page); orphan_blk = (struct f2fs_orphan_block *)page_address(page); memset(orphan_blk, 0, sizeof(*orphan_blk)); @@ -622,7 +636,7 @@ fail_no_cp: static int __add_dirty_inode(struct inode *inode, struct dir_inode_entry *new) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); if (is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) return -EEXIST; @@ -634,32 +648,38 @@ static int __add_dirty_inode(struct inode *inode, struct dir_inode_entry *new) return 0; } -void set_dirty_dir_page(struct inode *inode, struct page *page) +void update_dirty_page(struct inode *inode, struct page *page) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct dir_inode_entry *new; int ret = 0; - if (!S_ISDIR(inode->i_mode)) + if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode)) return; + if (!S_ISDIR(inode->i_mode)) { + inode_inc_dirty_pages(inode); + goto out; + } + new = f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); new->inode = inode; INIT_LIST_HEAD(&new->list); spin_lock(&sbi->dir_inode_lock); ret = __add_dirty_inode(inode, new); - inode_inc_dirty_dents(inode); - SetPagePrivate(page); + inode_inc_dirty_pages(inode); spin_unlock(&sbi->dir_inode_lock); if (ret) kmem_cache_free(inode_entry_slab, new); +out: + SetPagePrivate(page); } void add_dirty_dir_inode(struct inode *inode) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct dir_inode_entry *new = f2fs_kmem_cache_alloc(inode_entry_slab, GFP_NOFS); int ret = 0; @@ -677,14 +697,14 @@ void add_dirty_dir_inode(struct inode *inode) void remove_dirty_dir_inode(struct inode *inode) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct dir_inode_entry *entry; if (!S_ISDIR(inode->i_mode)) return; spin_lock(&sbi->dir_inode_lock); - if (get_dirty_dents(inode) || + if (get_dirty_pages(inode) || !is_inode_flag_set(F2FS_I(inode), FI_DIRTY_DIR)) { spin_unlock(&sbi->dir_inode_lock); return; @@ -737,7 +757,7 @@ retry: /* * Freeze all the FS-operations for checkpoint. */ -static void block_operations(struct f2fs_sb_info *sbi) +static int block_operations(struct f2fs_sb_info *sbi) { struct writeback_control wbc = { .sync_mode = WB_SYNC_ALL, @@ -745,6 +765,7 @@ static void block_operations(struct f2fs_sb_info *sbi) .for_reclaim = 0, }; struct blk_plug plug; + int err = 0; blk_start_plug(&plug); @@ -754,11 +775,15 @@ retry_flush_dents: if (get_pages(sbi, F2FS_DIRTY_DENTS)) { f2fs_unlock_all(sbi); sync_dirty_dir_inodes(sbi); + if (unlikely(f2fs_cp_error(sbi))) { + err = -EIO; + goto out; + } goto retry_flush_dents; } /* - * POR: we should ensure that there is no dirty node pages + * POR: we should ensure that there are no dirty node pages * until finishing nat/sit flush. */ retry_flush_nodes: @@ -767,9 +792,16 @@ retry_flush_nodes: if (get_pages(sbi, F2FS_DIRTY_NODES)) { up_write(&sbi->node_write); sync_node_pages(sbi, 0, &wbc); + if (unlikely(f2fs_cp_error(sbi))) { + f2fs_unlock_all(sbi); + err = -EIO; + goto out; + } goto retry_flush_nodes; } +out: blk_finish_plug(&plug); + return err; } static void unblock_operations(struct f2fs_sb_info *sbi) @@ -793,11 +825,12 @@ static void wait_on_all_pages_writeback(struct f2fs_sb_info *sbi) finish_wait(&sbi->cp_wait, &wait); } -static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) +static void do_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) { struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); - nid_t last_nid = 0; + struct f2fs_nm_info *nm_i = NM_I(sbi); + nid_t last_nid = nm_i->next_scan_nid; block_t start_blk; struct page *cp_page; unsigned int data_sum_blocks, orphan_blocks; @@ -813,8 +846,11 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) discard_next_dnode(sbi, NEXT_FREE_BLKADDR(sbi, curseg)); /* Flush all the NAT/SIT pages */ - while (get_pages(sbi, F2FS_DIRTY_META)) + while (get_pages(sbi, F2FS_DIRTY_META)) { sync_meta_pages(sbi, META, LONG_MAX); + if (unlikely(f2fs_cp_error(sbi))) + return; + } next_free_nid(sbi, &last_nid); @@ -825,7 +861,7 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) ckpt->elapsed_time = cpu_to_le64(get_mtime(sbi)); ckpt->valid_block_count = cpu_to_le64(valid_user_blocks(sbi)); ckpt->free_segment_count = cpu_to_le32(free_segments(sbi)); - for (i = 0; i < 3; i++) { + for (i = 0; i < NR_CURSEG_NODE_TYPE; i++) { ckpt->cur_node_segno[i] = cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_NODE)); ckpt->cur_node_blkoff[i] = @@ -833,7 +869,7 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) ckpt->alloc_type[i + CURSEG_HOT_NODE] = curseg_alloc_type(sbi, i + CURSEG_HOT_NODE); } - for (i = 0; i < 3; i++) { + for (i = 0; i < NR_CURSEG_DATA_TYPE; i++) { ckpt->cur_data_segno[i] = cpu_to_le32(curseg_segno(sbi, i + CURSEG_HOT_DATA)); ckpt->cur_data_blkoff[i] = @@ -848,24 +884,23 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) /* 2 cp + n data seg summary + orphan inode blocks */ data_sum_blocks = npages_for_summary_flush(sbi); - if (data_sum_blocks < 3) + if (data_sum_blocks < NR_CURSEG_DATA_TYPE) set_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); else clear_ckpt_flags(ckpt, CP_COMPACT_SUM_FLAG); - orphan_blocks = (sbi->n_orphans + F2FS_ORPHANS_PER_BLOCK - 1) - / F2FS_ORPHANS_PER_BLOCK; + orphan_blocks = GET_ORPHAN_BLOCKS(sbi->n_orphans); ckpt->cp_pack_start_sum = cpu_to_le32(1 + cp_payload_blks + orphan_blocks); - if (is_umount) { + if (cpc->reason == CP_UMOUNT) { set_ckpt_flags(ckpt, CP_UMOUNT_FLAG); - ckpt->cp_pack_total_block_count = cpu_to_le32(2 + + ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS+ cp_payload_blks + data_sum_blocks + orphan_blocks + NR_CURSEG_NODE_TYPE); } else { clear_ckpt_flags(ckpt, CP_UMOUNT_FLAG); - ckpt->cp_pack_total_block_count = cpu_to_le32(2 + + ckpt->cp_pack_total_block_count = cpu_to_le32(F2FS_CP_PACKS + cp_payload_blks + data_sum_blocks + orphan_blocks); } @@ -875,6 +910,9 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) else clear_ckpt_flags(ckpt, CP_ORPHAN_PRESENT_FLAG); + if (sbi->need_fsck) + set_ckpt_flags(ckpt, CP_FSCK_FLAG); + /* update SIT/NAT bitmap */ get_sit_bitmap(sbi, __bitmap_ptr(sbi, SIT_BITMAP)); get_nat_bitmap(sbi, __bitmap_ptr(sbi, NAT_BITMAP)); @@ -909,7 +947,7 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) write_data_summaries(sbi, start_blk); start_blk += data_sum_blocks; - if (is_umount) { + if (cpc->reason == CP_UMOUNT) { write_node_summaries(sbi, start_blk); start_blk += NR_CURSEG_NODE_TYPE; } @@ -924,6 +962,9 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) /* wait for previous submitted node/meta pages writeback */ wait_on_all_pages_writeback(sbi); + if (unlikely(f2fs_cp_error(sbi))) + return; + filemap_fdatawait_range(NODE_MAPPING(sbi), 0, LONG_MAX); filemap_fdatawait_range(META_MAPPING(sbi), 0, LONG_MAX); @@ -934,27 +975,35 @@ static void do_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) /* Here, we only have one bio having CP pack */ sync_meta_pages(sbi, META_FLUSH, LONG_MAX); - if (!is_set_ckpt_flags(ckpt, CP_ERROR_FLAG)) { - clear_prefree_segments(sbi); - release_dirty_inode(sbi); - F2FS_RESET_SB_DIRT(sbi); - } + release_dirty_inode(sbi); + + if (unlikely(f2fs_cp_error(sbi))) + return; + + clear_prefree_segments(sbi); + F2FS_RESET_SB_DIRT(sbi); } /* - * We guarantee that this checkpoint procedure should not fail. + * We guarantee that this checkpoint procedure will not fail. */ -void write_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) +void write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc) { struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); unsigned long long ckpt_ver; - trace_f2fs_write_checkpoint(sbi->sb, is_umount, "start block_ops"); + trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "start block_ops"); mutex_lock(&sbi->cp_mutex); - block_operations(sbi); - trace_f2fs_write_checkpoint(sbi->sb, is_umount, "finish block_ops"); + if (!sbi->s_dirty && cpc->reason != CP_DISCARD) + goto out; + if (unlikely(f2fs_cp_error(sbi))) + goto out; + if (block_operations(sbi)) + goto out; + + trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish block_ops"); f2fs_submit_merged_bio(sbi, DATA, WRITE); f2fs_submit_merged_bio(sbi, NODE, WRITE); @@ -970,16 +1019,16 @@ void write_checkpoint(struct f2fs_sb_info *sbi, bool is_umount) /* write cached NAT/SIT entries to NAT/SIT area */ flush_nat_entries(sbi); - flush_sit_entries(sbi); + flush_sit_entries(sbi, cpc); /* unlock all the fs_lock[] in do_checkpoint() */ - do_checkpoint(sbi, is_umount); + do_checkpoint(sbi, cpc); unblock_operations(sbi); - mutex_unlock(&sbi->cp_mutex); - stat_inc_cp_count(sbi->stat_info); - trace_f2fs_write_checkpoint(sbi->sb, is_umount, "finish checkpoint"); +out: + mutex_unlock(&sbi->cp_mutex); + trace_f2fs_write_checkpoint(sbi->sb, cpc->reason, "finish checkpoint"); } void init_ino_entry_info(struct f2fs_sb_info *sbi) @@ -999,8 +1048,8 @@ void init_ino_entry_info(struct f2fs_sb_info *sbi) * for cp pack we can have max 1020*504 orphan entries */ sbi->n_orphans = 0; - sbi->max_orphans = (sbi->blocks_per_seg - 2 - NR_CURSEG_TYPE) - * F2FS_ORPHANS_PER_BLOCK; + sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS - + NR_CURSEG_TYPE) * F2FS_ORPHANS_PER_BLOCK; } int __init create_checkpoint_caches(void) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 03313099c51c..8e58c4cc2cb9 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -53,7 +53,7 @@ static void f2fs_write_end_io(struct bio *bio, int err) struct page *page = bvec->bv_page; if (unlikely(err)) { - SetPageError(page); + set_page_dirty(page); set_bit(AS_EIO, &page->mapping->flags); f2fs_stop_checkpoint(sbi); } @@ -85,7 +85,7 @@ static struct bio *__bio_alloc(struct f2fs_sb_info *sbi, block_t blk_addr, bio = bio_alloc(GFP_NOIO, npages); bio->bi_bdev = sbi->sb->s_bdev; - bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(sbi, blk_addr); + bio->bi_iter.bi_sector = SECTOR_FROM_BLOCK(blk_addr); bio->bi_end_io = is_read ? f2fs_read_end_io : f2fs_write_end_io; bio->bi_private = sbi; @@ -193,7 +193,7 @@ void f2fs_submit_page_mbio(struct f2fs_sb_info *sbi, struct page *page, __submit_merged_bio(io); alloc_new: if (io->bio == NULL) { - int bio_blocks = MAX_BIO_BLOCKS(max_hw_blocks(sbi)); + int bio_blocks = MAX_BIO_BLOCKS(sbi); io->bio = __bio_alloc(sbi, blk_addr, bio_blocks, is_read); io->fio = *fio; @@ -236,7 +236,7 @@ static void __set_data_blkaddr(struct dnode_of_data *dn, block_t new_addr) int reserve_new_block(struct dnode_of_data *dn) { - struct f2fs_sb_info *sbi = F2FS_SB(dn->inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); if (unlikely(is_inode_flag_set(F2FS_I(dn->inode), FI_NO_ALLOC))) return -EPERM; @@ -258,7 +258,7 @@ int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index) int err; /* if inode_page exists, index should be zero */ - f2fs_bug_on(!need_put && index); + f2fs_bug_on(F2FS_I_SB(dn->inode), !need_put && index); err = get_dnode_of_data(dn, index, ALLOC_NODE); if (err) @@ -321,7 +321,7 @@ void update_extent_cache(block_t blk_addr, struct dnode_of_data *dn) block_t start_blkaddr, end_blkaddr; int need_update = true; - f2fs_bug_on(blk_addr == NEW_ADDR); + f2fs_bug_on(F2FS_I_SB(dn->inode), blk_addr == NEW_ADDR); fofs = start_bidx_of_node(ofs_of_node(dn->node_page), fi) + dn->ofs_in_node; @@ -396,7 +396,6 @@ end_update: struct page *find_data_page(struct inode *inode, pgoff_t index, bool sync) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); struct address_space *mapping = inode->i_mapping; struct dnode_of_data dn; struct page *page; @@ -429,7 +428,7 @@ struct page *find_data_page(struct inode *inode, pgoff_t index, bool sync) return page; } - err = f2fs_submit_page_bio(sbi, page, dn.data_blkaddr, + err = f2fs_submit_page_bio(F2FS_I_SB(inode), page, dn.data_blkaddr, sync ? READ_SYNC : READA); if (err) return ERR_PTR(err); @@ -451,7 +450,6 @@ struct page *find_data_page(struct inode *inode, pgoff_t index, bool sync) */ struct page *get_lock_data_page(struct inode *inode, pgoff_t index) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); struct address_space *mapping = inode->i_mapping; struct dnode_of_data dn; struct page *page; @@ -490,7 +488,8 @@ repeat: return page; } - err = f2fs_submit_page_bio(sbi, page, dn.data_blkaddr, READ_SYNC); + err = f2fs_submit_page_bio(F2FS_I_SB(inode), page, + dn.data_blkaddr, READ_SYNC); if (err) return ERR_PTR(err); @@ -517,7 +516,6 @@ repeat: struct page *get_new_data_page(struct inode *inode, struct page *ipage, pgoff_t index, bool new_i_size) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); struct address_space *mapping = inode->i_mapping; struct page *page; struct dnode_of_data dn; @@ -541,8 +539,8 @@ repeat: zero_user_segment(page, 0, PAGE_CACHE_SIZE); SetPageUptodate(page); } else { - err = f2fs_submit_page_bio(sbi, page, dn.data_blkaddr, - READ_SYNC); + err = f2fs_submit_page_bio(F2FS_I_SB(inode), page, + dn.data_blkaddr, READ_SYNC); if (err) goto put_err; @@ -573,10 +571,12 @@ put_err: static int __allocate_data_block(struct dnode_of_data *dn) { - struct f2fs_sb_info *sbi = F2FS_SB(dn->inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); + struct f2fs_inode_info *fi = F2FS_I(dn->inode); struct f2fs_summary sum; block_t new_blkaddr; struct node_info ni; + pgoff_t fofs; int type; if (unlikely(is_inode_flag_set(F2FS_I(dn->inode), FI_NO_ALLOC))) @@ -599,6 +599,12 @@ static int __allocate_data_block(struct dnode_of_data *dn) update_extent_cache(new_blkaddr, dn); clear_inode_flag(F2FS_I(dn->inode), FI_NO_EXTENT); + /* update i_size */ + fofs = start_bidx_of_node(ofs_of_node(dn->node_page), fi) + + dn->ofs_in_node; + if (i_size_read(dn->inode) < ((fofs + 1) << PAGE_CACHE_SHIFT)) + i_size_write(dn->inode, ((fofs + 1) << PAGE_CACHE_SHIFT)); + dn->data_blkaddr = new_blkaddr; return 0; } @@ -614,7 +620,6 @@ static int __allocate_data_block(struct dnode_of_data *dn) static int __get_data_block(struct inode *inode, sector_t iblock, struct buffer_head *bh_result, int create, bool fiemap) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); unsigned int blkbits = inode->i_sb->s_blocksize_bits; unsigned maxblocks = bh_result->b_size >> blkbits; struct dnode_of_data dn; @@ -630,8 +635,8 @@ static int __get_data_block(struct inode *inode, sector_t iblock, goto out; if (create) { - f2fs_balance_fs(sbi); - f2fs_lock_op(sbi); + f2fs_balance_fs(F2FS_I_SB(inode)); + f2fs_lock_op(F2FS_I_SB(inode)); } /* When reading holes, we need its node page */ @@ -691,7 +696,7 @@ get_next: allocated = true; blkaddr = dn.data_blkaddr; } - /* Give more consecutive addresses for the read ahead */ + /* Give more consecutive addresses for the readahead */ if (blkaddr == (bh_result->b_blocknr + ofs)) { ofs++; dn.ofs_in_node++; @@ -707,7 +712,7 @@ put_out: f2fs_put_dnode(&dn); unlock_out: if (create) - f2fs_unlock_op(sbi); + f2fs_unlock_op(F2FS_I_SB(inode)); out: trace_f2fs_get_data_block(inode, iblock, bh_result, err); return err; @@ -739,7 +744,7 @@ static int f2fs_read_data_page(struct file *file, struct page *page) trace_f2fs_readpage(page, DATA); - /* If the file has inline data, try to read it directlly */ + /* If the file has inline data, try to read it directly */ if (f2fs_has_inline_data(inode)) ret = f2fs_read_inline_data(inode, page); else @@ -804,7 +809,7 @@ static int f2fs_write_data_page(struct page *page, struct writeback_control *wbc) { struct inode *inode = page->mapping->host; - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); loff_t i_size = i_size_read(inode); const pgoff_t end_index = ((unsigned long long) i_size) >> PAGE_CACHE_SHIFT; @@ -836,10 +841,19 @@ write: /* Dentry blocks are controlled by checkpoint */ if (S_ISDIR(inode->i_mode)) { + if (unlikely(f2fs_cp_error(sbi))) + goto redirty_out; err = do_write_data_page(page, &fio); goto done; } + /* we should bypass data pages to proceed the kworkder jobs */ + if (unlikely(f2fs_cp_error(sbi))) { + SetPageError(page); + unlock_page(page); + goto out; + } + if (!wbc->for_reclaim) need_balance_fs = true; else if (has_not_enough_free_secs(sbi, 0)) @@ -857,7 +871,7 @@ done: clear_cold_data(page); out: - inode_dec_dirty_dents(inode); + inode_dec_dirty_pages(inode); unlock_page(page); if (need_balance_fs) f2fs_balance_fs(sbi); @@ -883,7 +897,7 @@ static int f2fs_write_data_pages(struct address_space *mapping, struct writeback_control *wbc) { struct inode *inode = mapping->host; - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); bool locked = false; int ret; long diff; @@ -895,7 +909,7 @@ static int f2fs_write_data_pages(struct address_space *mapping, return 0; if (S_ISDIR(inode->i_mode) && wbc->sync_mode == WB_SYNC_NONE && - get_dirty_dents(inode) < nr_pages_to_skip(sbi, DATA) && + get_dirty_pages(inode) < nr_pages_to_skip(sbi, DATA) && available_free_memory(sbi, DIRTY_DENTS)) goto skip_write; @@ -917,7 +931,7 @@ static int f2fs_write_data_pages(struct address_space *mapping, return ret; skip_write: - wbc->pages_skipped += get_dirty_dents(inode); + wbc->pages_skipped += get_dirty_pages(inode); return 0; } @@ -927,7 +941,7 @@ static void f2fs_write_failed(struct address_space *mapping, loff_t to) if (to > inode->i_size) { truncate_pagecache(inode, inode->i_size); - truncate_blocks(inode, inode->i_size); + truncate_blocks(inode, inode->i_size, true); } } @@ -936,7 +950,7 @@ static int f2fs_write_begin(struct file *file, struct address_space *mapping, struct page **pagep, void **fsdata) { struct inode *inode = mapping->host; - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct page *page; pgoff_t index = ((unsigned long long) pos) >> PAGE_CACHE_SHIFT; struct dnode_of_data dn; @@ -946,7 +960,7 @@ static int f2fs_write_begin(struct file *file, struct address_space *mapping, f2fs_balance_fs(sbi); repeat: - err = f2fs_convert_inline_data(inode, pos + len); + err = f2fs_convert_inline_data(inode, pos + len, NULL); if (err) goto fail; @@ -1038,7 +1052,10 @@ static int f2fs_write_end(struct file *file, trace_f2fs_write_end(inode, pos, len, copied); - set_page_dirty(page); + if (f2fs_is_atomic_file(inode) || f2fs_is_volatile_file(inode)) + register_inmem_page(inode, page); + else + set_page_dirty(page); if (pos + copied > i_size_read(inode)) { i_size_write(inode, pos + copied); @@ -1083,9 +1100,6 @@ static ssize_t f2fs_direct_IO(int rw, struct kiocb *iocb, if (check_direct_IO(inode, rw, iter, offset)) return 0; - /* clear fsync mark to recover these blocks */ - fsync_mark_clear(F2FS_SB(inode->i_sb), inode->i_ino); - trace_f2fs_direct_IO_enter(inode, offset, count, rw); err = blockdev_direct_IO(rw, iocb, inode, iter, offset, get_data_block); @@ -1101,8 +1115,12 @@ static void f2fs_invalidate_data_page(struct page *page, unsigned int offset, unsigned int length) { struct inode *inode = page->mapping->host; + + if (offset % PAGE_CACHE_SIZE || length != PAGE_CACHE_SIZE) + return; + if (PageDirty(page)) - inode_dec_dirty_dents(inode); + inode_dec_dirty_pages(inode); ClearPagePrivate(page); } @@ -1124,7 +1142,7 @@ static int f2fs_set_data_page_dirty(struct page *page) if (!PageDirty(page)) { __set_page_dirty_nobuffers(page); - set_dirty_dir_page(inode, page); + update_dirty_page(inode, page); return 1; } return 0; diff --git a/fs/f2fs/debug.c b/fs/f2fs/debug.c index a441ba33be11..0a91ab813a9e 100644 --- a/fs/f2fs/debug.c +++ b/fs/f2fs/debug.c @@ -32,7 +32,7 @@ static void update_general_status(struct f2fs_sb_info *sbi) struct f2fs_stat_info *si = F2FS_STAT(sbi); int i; - /* valid check of the segment numbers */ + /* validation check of the segment numbers */ si->hit_ext = sbi->read_hit_ext; si->total_ext = sbi->total_hit_ext; si->ndirty_node = get_pages(sbi, F2FS_DIRTY_NODES); @@ -93,7 +93,7 @@ static void update_sit_info(struct f2fs_sb_info *sbi) total_vblocks = 0; blks_per_sec = sbi->segs_per_sec * (1 << sbi->log_blocks_per_seg); hblks_per_sec = blks_per_sec / 2; - for (segno = 0; segno < TOTAL_SEGS(sbi); segno += sbi->segs_per_sec) { + for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) { vblocks = get_valid_blocks(sbi, segno, sbi->segs_per_sec); dist = abs(vblocks - hblks_per_sec); bimodal += dist * dist; @@ -103,7 +103,7 @@ static void update_sit_info(struct f2fs_sb_info *sbi) ndirty++; } } - dist = TOTAL_SECS(sbi) * hblks_per_sec * hblks_per_sec / 100; + dist = MAIN_SECS(sbi) * hblks_per_sec * hblks_per_sec / 100; si->bimodal = bimodal / dist; if (si->dirty_count) si->avg_vblocks = total_vblocks / ndirty; @@ -131,17 +131,17 @@ static void update_mem_info(struct f2fs_sb_info *sbi) /* build sit */ si->base_mem += sizeof(struct sit_info); - si->base_mem += TOTAL_SEGS(sbi) * sizeof(struct seg_entry); - si->base_mem += f2fs_bitmap_size(TOTAL_SEGS(sbi)); - si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * TOTAL_SEGS(sbi); + si->base_mem += MAIN_SEGS(sbi) * sizeof(struct seg_entry); + si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi)); + si->base_mem += 2 * SIT_VBLOCK_MAP_SIZE * MAIN_SEGS(sbi); if (sbi->segs_per_sec > 1) - si->base_mem += TOTAL_SECS(sbi) * sizeof(struct sec_entry); + si->base_mem += MAIN_SECS(sbi) * sizeof(struct sec_entry); si->base_mem += __bitmap_size(sbi, SIT_BITMAP); /* build free segmap */ si->base_mem += sizeof(struct free_segmap_info); - si->base_mem += f2fs_bitmap_size(TOTAL_SEGS(sbi)); - si->base_mem += f2fs_bitmap_size(TOTAL_SECS(sbi)); + si->base_mem += f2fs_bitmap_size(MAIN_SEGS(sbi)); + si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi)); /* build curseg */ si->base_mem += sizeof(struct curseg_info) * NR_CURSEG_TYPE; @@ -149,10 +149,10 @@ static void update_mem_info(struct f2fs_sb_info *sbi) /* build dirty segmap */ si->base_mem += sizeof(struct dirty_seglist_info); - si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(TOTAL_SEGS(sbi)); - si->base_mem += f2fs_bitmap_size(TOTAL_SECS(sbi)); + si->base_mem += NR_DIRTY_TYPE * f2fs_bitmap_size(MAIN_SEGS(sbi)); + si->base_mem += f2fs_bitmap_size(MAIN_SECS(sbi)); - /* buld nm */ + /* build nm */ si->base_mem += sizeof(struct f2fs_nm_info); si->base_mem += __bitmap_size(sbi, NAT_BITMAP); diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index bcf893c3d903..b54f87149c09 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -124,9 +124,9 @@ static struct f2fs_dir_entry *find_in_block(struct page *dentry_page, /* * For the most part, it should be a bug when name_len is zero. - * We stop here for figuring out where the bugs are occurred. + * We stop here for figuring out where the bugs has occurred. */ - f2fs_bug_on(!de->name_len); + f2fs_bug_on(F2FS_P_SB(dentry_page), !de->name_len); bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); } @@ -151,7 +151,7 @@ static struct f2fs_dir_entry *find_in_level(struct inode *dir, bool room = false; int max_slots = 0; - f2fs_bug_on(level > MAX_DIR_HASH_DEPTH); + f2fs_bug_on(F2FS_I_SB(dir), level > MAX_DIR_HASH_DEPTH); nbucket = dir_buckets(level, F2FS_I(dir)->i_dir_level); nblock = bucket_blocks(level); @@ -284,10 +284,9 @@ static void init_dent_inode(const struct qstr *name, struct page *ipage) int update_dent_inode(struct inode *inode, const struct qstr *name) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); struct page *page; - page = get_node_page(sbi, inode->i_ino); + page = get_node_page(F2FS_I_SB(inode), inode->i_ino); if (IS_ERR(page)) return PTR_ERR(page); @@ -337,7 +336,6 @@ static int make_empty_dir(struct inode *inode, static struct page *init_inode_metadata(struct inode *inode, struct inode *dir, const struct qstr *name) { - struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); struct page *page; int err; @@ -360,7 +358,7 @@ static struct page *init_inode_metadata(struct inode *inode, if (err) goto put_error; } else { - page = get_node_page(F2FS_SB(dir->i_sb), inode->i_ino); + page = get_node_page(F2FS_I_SB(dir), inode->i_ino); if (IS_ERR(page)) return page; @@ -381,7 +379,7 @@ static struct page *init_inode_metadata(struct inode *inode, * we should remove this inode from orphan list. */ if (inode->i_nlink == 0) - remove_orphan_inode(sbi, inode->i_ino); + remove_orphan_inode(F2FS_I_SB(dir), inode->i_ino); inc_nlink(inode); } return page; @@ -391,7 +389,7 @@ put_error: error: /* once the failed inode becomes a bad inode, i_mode is S_IFREG */ truncate_inode_pages(&inode->i_data, 0); - truncate_blocks(inode, 0); + truncate_blocks(inode, 0, false); remove_dirty_dir_inode(inode); remove_inode_page(inode); return ERR_PTR(err); @@ -563,7 +561,7 @@ fail: } /* - * It only removes the dentry from the dentry page,corresponding name + * It only removes the dentry from the dentry page, corresponding name * entry in name page does not need to be touched during deletion. */ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page, @@ -571,8 +569,7 @@ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page, { struct f2fs_dentry_block *dentry_blk; unsigned int bit_pos; - struct address_space *mapping = page->mapping; - struct inode *dir = mapping->host; + struct inode *dir = page->mapping->host; int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len)); int i; @@ -594,7 +591,7 @@ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page, dir->i_ctime = dir->i_mtime = CURRENT_TIME; if (inode) { - struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(dir); down_write(&F2FS_I(inode)->i_sem); @@ -621,7 +618,7 @@ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page, truncate_hole(dir, page->index, page->index + 1); clear_page_dirty_for_io(page); ClearPageUptodate(page); - inode_dec_dirty_dents(dir); + inode_dec_dirty_pages(dir); } f2fs_put_page(page, 1); } diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 4dab5338a97a..8171e80b2ee9 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -21,10 +21,16 @@ #include <linux/sched.h> #ifdef CONFIG_F2FS_CHECK_FS -#define f2fs_bug_on(condition) BUG_ON(condition) +#define f2fs_bug_on(sbi, condition) BUG_ON(condition) #define f2fs_down_write(x, y) down_write_nest_lock(x, y) #else -#define f2fs_bug_on(condition) +#define f2fs_bug_on(sbi, condition) \ + do { \ + if (unlikely(condition)) { \ + WARN_ON(1); \ + sbi->need_fsck = true; \ + } \ + } while (0) #define f2fs_down_write(x, y) down_write(x) #endif @@ -90,6 +96,20 @@ enum { SIT_BITMAP }; +enum { + CP_UMOUNT, + CP_SYNC, + CP_DISCARD, +}; + +struct cp_control { + int reason; + __u64 trim_start; + __u64 trim_end; + __u64 trim_minlen; + __u64 trimmed; +}; + /* * For CP/NAT/SIT/SSA readahead */ @@ -97,7 +117,8 @@ enum { META_CP, META_NAT, META_SIT, - META_SSA + META_SSA, + META_POR, }; /* for the list of ino */ @@ -130,7 +151,9 @@ struct discard_entry { struct fsync_inode_entry { struct list_head list; /* list head */ struct inode *inode; /* vfs inode pointer */ - block_t blkaddr; /* block address locating the last inode */ + block_t blkaddr; /* block address locating the last fsync */ + block_t last_dentry; /* block address locating the last dentry */ + block_t last_inode; /* block address locating the last inode */ }; #define nats_in_cursum(sum) (le16_to_cpu(sum->n_nats)) @@ -141,6 +164,9 @@ struct fsync_inode_entry { #define sit_in_journal(sum, i) (sum->sit_j.entries[i].se) #define segno_in_journal(sum, i) (sum->sit_j.entries[i].segno) +#define MAX_NAT_JENTRIES(sum) (NAT_JOURNAL_ENTRIES - nats_in_cursum(sum)) +#define MAX_SIT_JENTRIES(sum) (SIT_JOURNAL_ENTRIES - sits_in_cursum(sum)) + static inline int update_nats_in_cursum(struct f2fs_summary_block *rs, int i) { int before = nats_in_cursum(rs); @@ -155,11 +181,24 @@ static inline int update_sits_in_cursum(struct f2fs_summary_block *rs, int i) return before; } +static inline bool __has_cursum_space(struct f2fs_summary_block *sum, int size, + int type) +{ + if (type == NAT_JOURNAL) + return size <= MAX_NAT_JENTRIES(sum); + return size <= MAX_SIT_JENTRIES(sum); +} + /* * ioctl commands */ -#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS -#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS +#define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS +#define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS + +#define F2FS_IOCTL_MAGIC 0xf5 +#define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1) +#define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2) +#define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3) #if defined(__KERNEL__) && defined(CONFIG_COMPAT) /* @@ -222,13 +261,16 @@ struct f2fs_inode_info { /* Use below internally in f2fs*/ unsigned long flags; /* use to pass per-file flags */ struct rw_semaphore i_sem; /* protect fi info */ - atomic_t dirty_dents; /* # of dirty dentry pages */ + atomic_t dirty_pages; /* # of dirty pages */ f2fs_hash_t chash; /* hash value of given file name */ unsigned int clevel; /* maximum level of given file name */ nid_t i_xattr_nid; /* node id that contains xattrs */ unsigned long long xattr_ver; /* cp version of xattr modification */ struct extent_info ext; /* in-memory extent cache entry */ struct dir_inode_entry *dirty_dir; /* the pointer of dirty dir */ + + struct list_head inmem_pages; /* inmemory pages managed by f2fs */ + struct mutex inmem_lock; /* lock for inmemory pages */ }; static inline void get_extent_info(struct extent_info *ext, @@ -260,11 +302,10 @@ struct f2fs_nm_info { /* NAT cache management */ struct radix_tree_root nat_root;/* root of the nat entry cache */ + struct radix_tree_root nat_set_root;/* root of the nat set cache */ rwlock_t nat_tree_lock; /* protect nat_tree_lock */ - unsigned int nat_cnt; /* the # of cached nat entries */ struct list_head nat_entries; /* cached nat entry list (clean) */ - struct list_head dirty_nat_entries; /* cached nat entry list (dirty) */ - struct list_head nat_entry_set; /* nat entry set list */ + unsigned int nat_cnt; /* the # of cached nat entries */ unsigned int dirty_nat_cnt; /* total num of nat entries in set */ /* free node ids management */ @@ -332,18 +373,16 @@ enum { }; struct flush_cmd { - struct flush_cmd *next; struct completion wait; + struct llist_node llnode; int ret; }; struct flush_cmd_control { struct task_struct *f2fs_issue_flush; /* flush thread */ wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */ - struct flush_cmd *issue_list; /* list for command issue */ - struct flush_cmd *dispatch_list; /* list for command dispatch */ - spinlock_t issue_lock; /* for issue list lock */ - struct flush_cmd *issue_tail; /* list tail of issue list */ + struct llist_head issue_list; /* list for command issue */ + struct llist_node *dispatch_list; /* list for command dispatch */ }; struct f2fs_sm_info { @@ -369,8 +408,11 @@ struct f2fs_sm_info { int nr_discards; /* # of discards in the list */ int max_discards; /* max. discards to be issued */ + struct list_head sit_entry_set; /* sit entry set list */ + unsigned int ipu_policy; /* in-place-update policy */ unsigned int min_ipu_util; /* in-place-update threshold */ + unsigned int min_fsync_blocks; /* threshold for fsync */ /* for flush command control */ struct flush_cmd_control *cmd_control_info; @@ -395,7 +437,7 @@ enum count_type { }; /* - * The below are the page types of bios used in submti_bio(). + * The below are the page types of bios used in submit_bio(). * The available types are: * DATA User data pages. It operates as async mode. * NODE Node pages. It operates as async mode. @@ -434,6 +476,7 @@ struct f2fs_sb_info { struct buffer_head *raw_super_buf; /* buffer head of raw sb */ struct f2fs_super_block *raw_super; /* raw super block pointer */ int s_dirty; /* dirty flag for checkpoint */ + bool need_fsck; /* need fsck.f2fs to fix */ /* for node-related operations */ struct f2fs_nm_info *nm_info; /* node manager */ @@ -470,7 +513,7 @@ struct f2fs_sb_info { struct list_head dir_inode_list; /* dir inode list */ spinlock_t dir_inode_lock; /* for dir inode list lock */ - /* basic file system units */ + /* basic filesystem units */ unsigned int log_sectors_per_block; /* log2 sectors per block */ unsigned int log_blocksize; /* log2 block size */ unsigned int blocksize; /* block size */ @@ -539,6 +582,21 @@ static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) return sb->s_fs_info; } +static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode) +{ + return F2FS_SB(inode->i_sb); +} + +static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping) +{ + return F2FS_I_SB(mapping->host); +} + +static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page) +{ + return F2FS_M_SB(page->mapping); +} + static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) { return (struct f2fs_super_block *)(sbi->raw_super); @@ -703,8 +761,8 @@ static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, blkcnt_t count) { spin_lock(&sbi->stat_lock); - f2fs_bug_on(sbi->total_valid_block_count < (block_t) count); - f2fs_bug_on(inode->i_blocks < count); + f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count); + f2fs_bug_on(sbi, inode->i_blocks < count); inode->i_blocks -= count; sbi->total_valid_block_count -= (block_t)count; spin_unlock(&sbi->stat_lock); @@ -716,10 +774,11 @@ static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) F2FS_SET_SB_DIRT(sbi); } -static inline void inode_inc_dirty_dents(struct inode *inode) +static inline void inode_inc_dirty_pages(struct inode *inode) { - inc_page_count(F2FS_SB(inode->i_sb), F2FS_DIRTY_DENTS); - atomic_inc(&F2FS_I(inode)->dirty_dents); + atomic_inc(&F2FS_I(inode)->dirty_pages); + if (S_ISDIR(inode->i_mode)) + inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS); } static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) @@ -727,13 +786,15 @@ static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) atomic_dec(&sbi->nr_pages[count_type]); } -static inline void inode_dec_dirty_dents(struct inode *inode) +static inline void inode_dec_dirty_pages(struct inode *inode) { - if (!S_ISDIR(inode->i_mode)) + if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode)) return; - dec_page_count(F2FS_SB(inode->i_sb), F2FS_DIRTY_DENTS); - atomic_dec(&F2FS_I(inode)->dirty_dents); + atomic_dec(&F2FS_I(inode)->dirty_pages); + + if (S_ISDIR(inode->i_mode)) + dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_DENTS); } static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) @@ -741,9 +802,9 @@ static inline int get_pages(struct f2fs_sb_info *sbi, int count_type) return atomic_read(&sbi->nr_pages[count_type]); } -static inline int get_dirty_dents(struct inode *inode) +static inline int get_dirty_pages(struct inode *inode) { - return atomic_read(&F2FS_I(inode)->dirty_dents); + return atomic_read(&F2FS_I(inode)->dirty_pages); } static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) @@ -799,7 +860,7 @@ static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) /* * odd numbered checkpoint should at cp segment 0 - * and even segent must be at cp segment 1 + * and even segment must be at cp segment 1 */ if (!(ckpt_version & 1)) start_addr += sbi->blocks_per_seg; @@ -848,9 +909,9 @@ static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, { spin_lock(&sbi->stat_lock); - f2fs_bug_on(!sbi->total_valid_block_count); - f2fs_bug_on(!sbi->total_valid_node_count); - f2fs_bug_on(!inode->i_blocks); + f2fs_bug_on(sbi, !sbi->total_valid_block_count); + f2fs_bug_on(sbi, !sbi->total_valid_node_count); + f2fs_bug_on(sbi, !inode->i_blocks); inode->i_blocks--; sbi->total_valid_node_count--; @@ -867,7 +928,7 @@ static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) { spin_lock(&sbi->stat_lock); - f2fs_bug_on(sbi->total_valid_inode_count == sbi->total_node_count); + f2fs_bug_on(sbi, sbi->total_valid_inode_count == sbi->total_node_count); sbi->total_valid_inode_count++; spin_unlock(&sbi->stat_lock); } @@ -875,7 +936,7 @@ static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) { spin_lock(&sbi->stat_lock); - f2fs_bug_on(!sbi->total_valid_inode_count); + f2fs_bug_on(sbi, !sbi->total_valid_inode_count); sbi->total_valid_inode_count--; spin_unlock(&sbi->stat_lock); } @@ -891,7 +952,7 @@ static inline void f2fs_put_page(struct page *page, int unlock) return; if (unlock) { - f2fs_bug_on(!PageLocked(page)); + f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page)); unlock_page(page); } page_cache_release(page); @@ -998,7 +1059,9 @@ enum { FI_INLINE_DATA, /* used for inline data*/ FI_APPEND_WRITE, /* inode has appended data */ FI_UPDATE_WRITE, /* inode has in-place-update data */ - FI_NEED_IPU, /* used fo ipu for fdatasync */ + FI_NEED_IPU, /* used for ipu per file */ + FI_ATOMIC_FILE, /* indicate atomic file */ + FI_VOLATILE_FILE, /* indicate volatile file */ }; static inline void set_inode_flag(struct f2fs_inode_info *fi, int flag) @@ -1085,6 +1148,16 @@ static inline int f2fs_has_inline_data(struct inode *inode) return is_inode_flag_set(F2FS_I(inode), FI_INLINE_DATA); } +static inline bool f2fs_is_atomic_file(struct inode *inode) +{ + return is_inode_flag_set(F2FS_I(inode), FI_ATOMIC_FILE); +} + +static inline bool f2fs_is_volatile_file(struct inode *inode) +{ + return is_inode_flag_set(F2FS_I(inode), FI_VOLATILE_FILE); +} + static inline void *inline_data_addr(struct page *page) { struct f2fs_inode *ri = F2FS_INODE(page); @@ -1096,6 +1169,11 @@ static inline int f2fs_readonly(struct super_block *sb) return sb->s_flags & MS_RDONLY; } +static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi) +{ + return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); +} + static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi) { set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); @@ -1117,7 +1195,7 @@ static inline void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi) */ int f2fs_sync_file(struct file *, loff_t, loff_t, int); void truncate_data_blocks(struct dnode_of_data *); -int truncate_blocks(struct inode *, u64); +int truncate_blocks(struct inode *, u64, bool); void f2fs_truncate(struct inode *); int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); int f2fs_setattr(struct dentry *, struct iattr *); @@ -1136,6 +1214,7 @@ void update_inode(struct inode *, struct page *); void update_inode_page(struct inode *); int f2fs_write_inode(struct inode *, struct writeback_control *); void f2fs_evict_inode(struct inode *); +void handle_failed_inode(struct inode *); /* * namei.c @@ -1183,9 +1262,9 @@ struct dnode_of_data; struct node_info; bool available_free_memory(struct f2fs_sb_info *, int); -int is_checkpointed_node(struct f2fs_sb_info *, nid_t); -bool fsync_mark_done(struct f2fs_sb_info *, nid_t); -void fsync_mark_clear(struct f2fs_sb_info *, nid_t); +bool is_checkpointed_node(struct f2fs_sb_info *, nid_t); +bool has_fsynced_inode(struct f2fs_sb_info *, nid_t); +bool need_inode_block_update(struct f2fs_sb_info *, nid_t); void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); int truncate_inode_blocks(struct inode *, pgoff_t); @@ -1202,10 +1281,8 @@ int sync_node_pages(struct f2fs_sb_info *, nid_t, struct writeback_control *); bool alloc_nid(struct f2fs_sb_info *, nid_t *); void alloc_nid_done(struct f2fs_sb_info *, nid_t); void alloc_nid_failed(struct f2fs_sb_info *, nid_t); -void recover_node_page(struct f2fs_sb_info *, struct page *, - struct f2fs_summary *, struct node_info *, block_t); void recover_inline_xattr(struct inode *, struct page *); -bool recover_xattr_data(struct inode *, struct page *, block_t); +void recover_xattr_data(struct inode *, struct page *, block_t); int recover_inode_page(struct f2fs_sb_info *, struct page *); int restore_node_summary(struct f2fs_sb_info *, unsigned int, struct f2fs_summary_block *); @@ -1218,6 +1295,8 @@ void destroy_node_manager_caches(void); /* * segment.c */ +void register_inmem_page(struct inode *, struct page *); +void commit_inmem_pages(struct inode *, bool); void f2fs_balance_fs(struct f2fs_sb_info *); void f2fs_balance_fs_bg(struct f2fs_sb_info *); int f2fs_issue_flush(struct f2fs_sb_info *); @@ -1226,9 +1305,11 @@ void destroy_flush_cmd_control(struct f2fs_sb_info *); void invalidate_blocks(struct f2fs_sb_info *, block_t); void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t); void clear_prefree_segments(struct f2fs_sb_info *); +void release_discard_addrs(struct f2fs_sb_info *); void discard_next_dnode(struct f2fs_sb_info *, block_t); int npages_for_summary_flush(struct f2fs_sb_info *); void allocate_new_segments(struct f2fs_sb_info *); +int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *); struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); void write_meta_page(struct f2fs_sb_info *, struct page *); void write_node_page(struct f2fs_sb_info *, struct page *, @@ -1238,8 +1319,6 @@ void write_data_page(struct page *, struct dnode_of_data *, block_t *, void rewrite_data_page(struct page *, block_t, struct f2fs_io_info *); void recover_data_page(struct f2fs_sb_info *, struct page *, struct f2fs_summary *, block_t, block_t); -void rewrite_node_page(struct f2fs_sb_info *, struct page *, - struct f2fs_summary *, block_t, block_t); void allocate_data_block(struct f2fs_sb_info *, struct page *, block_t, block_t *, struct f2fs_summary *, int); void f2fs_wait_on_page_writeback(struct page *, enum page_type); @@ -1247,7 +1326,7 @@ void write_data_summaries(struct f2fs_sb_info *, block_t); void write_node_summaries(struct f2fs_sb_info *, block_t); int lookup_journal_in_cursum(struct f2fs_summary_block *, int, unsigned int, int); -void flush_sit_entries(struct f2fs_sb_info *); +void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *); int build_segment_manager(struct f2fs_sb_info *); void destroy_segment_manager(struct f2fs_sb_info *); int __init create_segment_manager_caches(void); @@ -1258,10 +1337,12 @@ void destroy_segment_manager_caches(void); */ struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); -int ra_meta_pages(struct f2fs_sb_info *, int, int, int); +struct page *get_meta_page_ra(struct f2fs_sb_info *, pgoff_t); +int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int); long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); void add_dirty_inode(struct f2fs_sb_info *, nid_t, int type); void remove_dirty_inode(struct f2fs_sb_info *, nid_t, int type); +void release_dirty_inode(struct f2fs_sb_info *); bool exist_written_data(struct f2fs_sb_info *, nid_t, int); int acquire_orphan_inode(struct f2fs_sb_info *); void release_orphan_inode(struct f2fs_sb_info *); @@ -1269,11 +1350,11 @@ void add_orphan_inode(struct f2fs_sb_info *, nid_t); void remove_orphan_inode(struct f2fs_sb_info *, nid_t); void recover_orphan_inodes(struct f2fs_sb_info *); int get_valid_checkpoint(struct f2fs_sb_info *); -void set_dirty_dir_page(struct inode *, struct page *); +void update_dirty_page(struct inode *, struct page *); void add_dirty_dir_inode(struct inode *); void remove_dirty_dir_inode(struct inode *); void sync_dirty_dir_inodes(struct f2fs_sb_info *); -void write_checkpoint(struct f2fs_sb_info *, bool); +void write_checkpoint(struct f2fs_sb_info *, struct cp_control *); void init_ino_entry_info(struct f2fs_sb_info *); int __init create_checkpoint_caches(void); void destroy_checkpoint_caches(void); @@ -1357,12 +1438,12 @@ static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) #define stat_inc_inline_inode(inode) \ do { \ if (f2fs_has_inline_data(inode)) \ - ((F2FS_SB(inode->i_sb))->inline_inode++); \ + ((F2FS_I_SB(inode))->inline_inode++); \ } while (0) #define stat_dec_inline_inode(inode) \ do { \ if (f2fs_has_inline_data(inode)) \ - ((F2FS_SB(inode->i_sb))->inline_inode--); \ + ((F2FS_I_SB(inode))->inline_inode--); \ } while (0) #define stat_inc_seg_type(sbi, curseg) \ @@ -1439,8 +1520,8 @@ extern const struct inode_operations f2fs_special_inode_operations; */ bool f2fs_may_inline(struct inode *); int f2fs_read_inline_data(struct inode *, struct page *); -int f2fs_convert_inline_data(struct inode *, pgoff_t); +int f2fs_convert_inline_data(struct inode *, pgoff_t, struct page *); int f2fs_write_inline_data(struct inode *, struct page *, unsigned int); void truncate_inline_data(struct inode *, u64); -int recover_inline_data(struct inode *, struct page *); +bool recover_inline_data(struct inode *, struct page *); #endif diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index 208f1a9bd569..8e68bb64f835 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -33,7 +33,7 @@ static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma, { struct page *page = vmf->page; struct inode *inode = file_inode(vma->vm_file); - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct dnode_of_data dn; int err; @@ -41,6 +41,11 @@ static int f2fs_vm_page_mkwrite(struct vm_area_struct *vma, sb_start_pagefault(inode->i_sb); + /* force to convert with normal data indices */ + err = f2fs_convert_inline_data(inode, MAX_INLINE_DATA + 1, page); + if (err) + goto out; + /* block allocation */ f2fs_lock_op(sbi); set_new_dnode(&dn, inode, NULL, NULL, 0); @@ -110,11 +115,31 @@ static int get_parent_ino(struct inode *inode, nid_t *pino) return 1; } +static inline bool need_do_checkpoint(struct inode *inode) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + bool need_cp = false; + + if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1) + need_cp = true; + else if (file_wrong_pino(inode)) + need_cp = true; + else if (!space_for_roll_forward(sbi)) + need_cp = true; + else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) + need_cp = true; + else if (F2FS_I(inode)->xattr_ver == cur_cp_version(F2FS_CKPT(sbi))) + need_cp = true; + + return need_cp; +} + int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) { struct inode *inode = file->f_mapping->host; struct f2fs_inode_info *fi = F2FS_I(inode); - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + nid_t ino = inode->i_ino; int ret = 0; bool need_cp = false; struct writeback_control wbc = { @@ -129,12 +154,11 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) trace_f2fs_sync_file_enter(inode); /* if fdatasync is triggered, let's do in-place-update */ - if (datasync) + if (get_dirty_pages(inode) <= SM_I(sbi)->min_fsync_blocks) set_inode_flag(fi, FI_NEED_IPU); - ret = filemap_write_and_wait_range(inode->i_mapping, start, end); - if (datasync) - clear_inode_flag(fi, FI_NEED_IPU); + clear_inode_flag(fi, FI_NEED_IPU); + if (ret) { trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); return ret; @@ -144,33 +168,31 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) * if there is no written data, don't waste time to write recovery info. */ if (!is_inode_flag_set(fi, FI_APPEND_WRITE) && - !exist_written_data(sbi, inode->i_ino, APPEND_INO)) { + !exist_written_data(sbi, ino, APPEND_INO)) { + struct page *i = find_get_page(NODE_MAPPING(sbi), ino); + + /* But we need to avoid that there are some inode updates */ + if ((i && PageDirty(i)) || need_inode_block_update(sbi, ino)) { + f2fs_put_page(i, 0); + goto go_write; + } + f2fs_put_page(i, 0); + if (is_inode_flag_set(fi, FI_UPDATE_WRITE) || - exist_written_data(sbi, inode->i_ino, UPDATE_INO)) + exist_written_data(sbi, ino, UPDATE_INO)) goto flush_out; goto out; } - +go_write: /* guarantee free sections for fsync */ f2fs_balance_fs(sbi); - down_read(&fi->i_sem); - /* * Both of fdatasync() and fsync() are able to be recovered from * sudden-power-off. */ - if (!S_ISREG(inode->i_mode) || inode->i_nlink != 1) - need_cp = true; - else if (file_wrong_pino(inode)) - need_cp = true; - else if (!space_for_roll_forward(sbi)) - need_cp = true; - else if (!is_checkpointed_node(sbi, F2FS_I(inode)->i_pino)) - need_cp = true; - else if (F2FS_I(inode)->xattr_ver == cur_cp_version(F2FS_CKPT(sbi))) - need_cp = true; - + down_read(&fi->i_sem); + need_cp = need_do_checkpoint(inode); up_read(&fi->i_sem); if (need_cp) { @@ -194,26 +216,28 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync) up_write(&fi->i_sem); } } else { - /* if there is no written node page, write its inode page */ - while (!sync_node_pages(sbi, inode->i_ino, &wbc)) { - if (fsync_mark_done(sbi, inode->i_ino)) - goto out; +sync_nodes: + sync_node_pages(sbi, ino, &wbc); + + if (need_inode_block_update(sbi, ino)) { mark_inode_dirty_sync(inode); ret = f2fs_write_inode(inode, NULL); if (ret) goto out; + goto sync_nodes; } - ret = wait_on_node_pages_writeback(sbi, inode->i_ino); + + ret = wait_on_node_pages_writeback(sbi, ino); if (ret) goto out; /* once recovery info is written, don't need to tack this */ - remove_dirty_inode(sbi, inode->i_ino, APPEND_INO); + remove_dirty_inode(sbi, ino, APPEND_INO); clear_inode_flag(fi, FI_APPEND_WRITE); flush_out: - remove_dirty_inode(sbi, inode->i_ino, UPDATE_INO); + remove_dirty_inode(sbi, ino, UPDATE_INO); clear_inode_flag(fi, FI_UPDATE_WRITE); - ret = f2fs_issue_flush(F2FS_SB(inode->i_sb)); + ret = f2fs_issue_flush(F2FS_I_SB(inode)); } out: trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret); @@ -288,7 +312,7 @@ static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) if (err && err != -ENOENT) { goto fail; } else if (err == -ENOENT) { - /* direct node is not exist */ + /* direct node does not exists */ if (whence == SEEK_DATA) { pgofs = PGOFS_OF_NEXT_DNODE(pgofs, F2FS_I(inode)); @@ -340,6 +364,8 @@ static loff_t f2fs_llseek(struct file *file, loff_t offset, int whence) maxbytes, i_size_read(inode)); case SEEK_DATA: case SEEK_HOLE: + if (offset < 0) + return -ENXIO; return f2fs_seek_block(file, offset, whence); } @@ -356,7 +382,7 @@ static int f2fs_file_mmap(struct file *file, struct vm_area_struct *vma) int truncate_data_blocks_range(struct dnode_of_data *dn, int count) { int nr_free = 0, ofs = dn->ofs_in_node; - struct f2fs_sb_info *sbi = F2FS_SB(dn->inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); struct f2fs_node *raw_node; __le32 *addr; @@ -417,9 +443,9 @@ out: f2fs_put_page(page, 1); } -int truncate_blocks(struct inode *inode, u64 from) +int truncate_blocks(struct inode *inode, u64 from, bool lock) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); unsigned int blocksize = inode->i_sb->s_blocksize; struct dnode_of_data dn; pgoff_t free_from; @@ -433,14 +459,16 @@ int truncate_blocks(struct inode *inode, u64 from) free_from = (pgoff_t) ((from + blocksize - 1) >> (sbi->log_blocksize)); - f2fs_lock_op(sbi); + if (lock) + f2fs_lock_op(sbi); set_new_dnode(&dn, inode, NULL, NULL, 0); err = get_dnode_of_data(&dn, free_from, LOOKUP_NODE); if (err) { if (err == -ENOENT) goto free_next; - f2fs_unlock_op(sbi); + if (lock) + f2fs_unlock_op(sbi); trace_f2fs_truncate_blocks_exit(inode, err); return err; } @@ -448,7 +476,7 @@ int truncate_blocks(struct inode *inode, u64 from) count = ADDRS_PER_PAGE(dn.node_page, F2FS_I(inode)); count -= dn.ofs_in_node; - f2fs_bug_on(count < 0); + f2fs_bug_on(sbi, count < 0); if (dn.ofs_in_node || IS_INODE(dn.node_page)) { truncate_data_blocks_range(&dn, count); @@ -458,7 +486,8 @@ int truncate_blocks(struct inode *inode, u64 from) f2fs_put_dnode(&dn); free_next: err = truncate_inode_blocks(inode, free_from); - f2fs_unlock_op(sbi); + if (lock) + f2fs_unlock_op(sbi); done: /* lastly zero out the first data page */ truncate_partial_data_page(inode, from); @@ -475,7 +504,7 @@ void f2fs_truncate(struct inode *inode) trace_f2fs_truncate(inode); - if (!truncate_blocks(inode, i_size_read(inode))) { + if (!truncate_blocks(inode, i_size_read(inode), true)) { inode->i_mtime = inode->i_ctime = CURRENT_TIME; mark_inode_dirty(inode); } @@ -531,15 +560,22 @@ int f2fs_setattr(struct dentry *dentry, struct iattr *attr) if (err) return err; - if ((attr->ia_valid & ATTR_SIZE) && - attr->ia_size != i_size_read(inode)) { - err = f2fs_convert_inline_data(inode, attr->ia_size); + if (attr->ia_valid & ATTR_SIZE) { + err = f2fs_convert_inline_data(inode, attr->ia_size, NULL); if (err) return err; - truncate_setsize(inode, attr->ia_size); - f2fs_truncate(inode); - f2fs_balance_fs(F2FS_SB(inode->i_sb)); + if (attr->ia_size != i_size_read(inode)) { + truncate_setsize(inode, attr->ia_size); + f2fs_truncate(inode); + f2fs_balance_fs(F2FS_I_SB(inode)); + } else { + /* + * giving a chance to truncate blocks past EOF which + * are fallocated with FALLOC_FL_KEEP_SIZE. + */ + f2fs_truncate(inode); + } } __setattr_copy(inode, attr); @@ -573,7 +609,7 @@ const struct inode_operations f2fs_file_inode_operations = { static void fill_zero(struct inode *inode, pgoff_t index, loff_t start, loff_t len) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct page *page; if (!len) @@ -622,7 +658,14 @@ static int punch_hole(struct inode *inode, loff_t offset, loff_t len) loff_t off_start, off_end; int ret = 0; - ret = f2fs_convert_inline_data(inode, MAX_INLINE_DATA + 1); + if (!S_ISREG(inode->i_mode)) + return -EOPNOTSUPP; + + /* skip punching hole beyond i_size */ + if (offset >= inode->i_size) + return ret; + + ret = f2fs_convert_inline_data(inode, MAX_INLINE_DATA + 1, NULL); if (ret) return ret; @@ -645,7 +688,7 @@ static int punch_hole(struct inode *inode, loff_t offset, loff_t len) if (pg_start < pg_end) { struct address_space *mapping = inode->i_mapping; loff_t blk_start, blk_end; - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); f2fs_balance_fs(sbi); @@ -666,7 +709,7 @@ static int punch_hole(struct inode *inode, loff_t offset, loff_t len) static int expand_inode_data(struct inode *inode, loff_t offset, loff_t len, int mode) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); pgoff_t index, pg_start, pg_end; loff_t new_size = i_size_read(inode); loff_t off_start, off_end; @@ -678,7 +721,7 @@ static int expand_inode_data(struct inode *inode, loff_t offset, if (ret) return ret; - ret = f2fs_convert_inline_data(inode, offset + len); + ret = f2fs_convert_inline_data(inode, offset + len, NULL); if (ret) return ret; @@ -762,61 +805,157 @@ static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags) return flags & F2FS_OTHER_FLMASK; } -long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) +static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) +{ + struct inode *inode = file_inode(filp); + struct f2fs_inode_info *fi = F2FS_I(inode); + unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; + return put_user(flags, (int __user *)arg); +} + +static int f2fs_ioc_setflags(struct file *filp, unsigned long arg) { struct inode *inode = file_inode(filp); struct f2fs_inode_info *fi = F2FS_I(inode); - unsigned int flags; + unsigned int flags = fi->i_flags & FS_FL_USER_VISIBLE; + unsigned int oldflags; int ret; - switch (cmd) { - case F2FS_IOC_GETFLAGS: - flags = fi->i_flags & FS_FL_USER_VISIBLE; - return put_user(flags, (int __user *) arg); - case F2FS_IOC_SETFLAGS: - { - unsigned int oldflags; + ret = mnt_want_write_file(filp); + if (ret) + return ret; - ret = mnt_want_write_file(filp); - if (ret) - return ret; + if (!inode_owner_or_capable(inode)) { + ret = -EACCES; + goto out; + } - if (!inode_owner_or_capable(inode)) { - ret = -EACCES; - goto out; - } + if (get_user(flags, (int __user *)arg)) { + ret = -EFAULT; + goto out; + } + + flags = f2fs_mask_flags(inode->i_mode, flags); + + mutex_lock(&inode->i_mutex); + + oldflags = fi->i_flags; - if (get_user(flags, (int __user *) arg)) { - ret = -EFAULT; + if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { + if (!capable(CAP_LINUX_IMMUTABLE)) { + mutex_unlock(&inode->i_mutex); + ret = -EPERM; goto out; } + } - flags = f2fs_mask_flags(inode->i_mode, flags); + flags = flags & FS_FL_USER_MODIFIABLE; + flags |= oldflags & ~FS_FL_USER_MODIFIABLE; + fi->i_flags = flags; + mutex_unlock(&inode->i_mutex); - mutex_lock(&inode->i_mutex); + f2fs_set_inode_flags(inode); + inode->i_ctime = CURRENT_TIME; + mark_inode_dirty(inode); +out: + mnt_drop_write_file(filp); + return ret; +} - oldflags = fi->i_flags; +static int f2fs_ioc_start_atomic_write(struct file *filp) +{ + struct inode *inode = file_inode(filp); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); - if ((flags ^ oldflags) & (FS_APPEND_FL | FS_IMMUTABLE_FL)) { - if (!capable(CAP_LINUX_IMMUTABLE)) { - mutex_unlock(&inode->i_mutex); - ret = -EPERM; - goto out; - } - } + if (!inode_owner_or_capable(inode)) + return -EACCES; + + f2fs_balance_fs(sbi); - flags = flags & FS_FL_USER_MODIFIABLE; - flags |= oldflags & ~FS_FL_USER_MODIFIABLE; - fi->i_flags = flags; - mutex_unlock(&inode->i_mutex); + set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE); - f2fs_set_inode_flags(inode); - inode->i_ctime = CURRENT_TIME; - mark_inode_dirty(inode); -out: - mnt_drop_write_file(filp); + return f2fs_convert_inline_data(inode, MAX_INLINE_DATA + 1, NULL); +} + +static int f2fs_ioc_commit_atomic_write(struct file *filp) +{ + struct inode *inode = file_inode(filp); + int ret; + + if (!inode_owner_or_capable(inode)) + return -EACCES; + + if (f2fs_is_volatile_file(inode)) + return 0; + + ret = mnt_want_write_file(filp); + if (ret) return ret; - } + + if (f2fs_is_atomic_file(inode)) + commit_inmem_pages(inode, false); + + ret = f2fs_sync_file(filp, 0, LONG_MAX, 0); + mnt_drop_write_file(filp); + return ret; +} + +static int f2fs_ioc_start_volatile_write(struct file *filp) +{ + struct inode *inode = file_inode(filp); + + if (!inode_owner_or_capable(inode)) + return -EACCES; + + set_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE); + return 0; +} + +static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg) +{ + struct inode *inode = file_inode(filp); + struct super_block *sb = inode->i_sb; + struct request_queue *q = bdev_get_queue(sb->s_bdev); + struct fstrim_range range; + int ret; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (!blk_queue_discard(q)) + return -EOPNOTSUPP; + + if (copy_from_user(&range, (struct fstrim_range __user *)arg, + sizeof(range))) + return -EFAULT; + + range.minlen = max((unsigned int)range.minlen, + q->limits.discard_granularity); + ret = f2fs_trim_fs(F2FS_SB(sb), &range); + if (ret < 0) + return ret; + + if (copy_to_user((struct fstrim_range __user *)arg, &range, + sizeof(range))) + return -EFAULT; + return 0; +} + +long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) +{ + switch (cmd) { + case F2FS_IOC_GETFLAGS: + return f2fs_ioc_getflags(filp, arg); + case F2FS_IOC_SETFLAGS: + return f2fs_ioc_setflags(filp, arg); + case F2FS_IOC_START_ATOMIC_WRITE: + return f2fs_ioc_start_atomic_write(filp); + case F2FS_IOC_COMMIT_ATOMIC_WRITE: + return f2fs_ioc_commit_atomic_write(filp); + case F2FS_IOC_START_VOLATILE_WRITE: + return f2fs_ioc_start_volatile_write(filp); + case FITRIM: + return f2fs_ioc_fitrim(filp, arg); default: return -ENOTTY; } diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index d7947d90ccc3..2a8f4acdb86b 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -58,7 +58,7 @@ static int gc_thread_func(void *data) * 3. IO subsystem is idle by checking the # of requests in * bdev's request list. * - * Note) We have to avoid triggering GCs too much frequently. + * Note) We have to avoid triggering GCs frequently. * Because it is possible that some segments can be * invalidated soon after by user update or deletion. * So, I'd like to wait some time to collect dirty segments. @@ -193,7 +193,7 @@ static unsigned int check_bg_victims(struct f2fs_sb_info *sbi) * selected by background GC before. * Those segments guarantee they have small valid blocks. */ - for_each_set_bit(secno, dirty_i->victim_secmap, TOTAL_SECS(sbi)) { + for_each_set_bit(secno, dirty_i->victim_secmap, MAIN_SECS(sbi)) { if (sec_usage_check(sbi, secno)) continue; clear_bit(secno, dirty_i->victim_secmap); @@ -222,7 +222,7 @@ static unsigned int get_cb_cost(struct f2fs_sb_info *sbi, unsigned int segno) u = (vblocks * 100) >> sbi->log_blocks_per_seg; - /* Handle if the system time is changed by user */ + /* Handle if the system time has changed by the user */ if (mtime < sit_i->min_mtime) sit_i->min_mtime = mtime; if (mtime > sit_i->max_mtime) @@ -263,14 +263,14 @@ static int get_victim_by_default(struct f2fs_sb_info *sbi, unsigned int secno, max_cost; int nsearched = 0; + mutex_lock(&dirty_i->seglist_lock); + p.alloc_mode = alloc_mode; select_policy(sbi, gc_type, type, &p); p.min_segno = NULL_SEGNO; p.min_cost = max_cost = get_max_cost(sbi, &p); - mutex_lock(&dirty_i->seglist_lock); - if (p.alloc_mode == LFS && gc_type == FG_GC) { p.min_segno = check_bg_victims(sbi); if (p.min_segno != NULL_SEGNO) @@ -281,9 +281,8 @@ static int get_victim_by_default(struct f2fs_sb_info *sbi, unsigned long cost; unsigned int segno; - segno = find_next_bit(p.dirty_segmap, - TOTAL_SEGS(sbi), p.offset); - if (segno >= TOTAL_SEGS(sbi)) { + segno = find_next_bit(p.dirty_segmap, MAIN_SEGS(sbi), p.offset); + if (segno >= MAIN_SEGS(sbi)) { if (sbi->last_victim[p.gc_mode]) { sbi->last_victim[p.gc_mode] = 0; p.offset = 0; @@ -423,6 +422,12 @@ next_step: if (IS_ERR(node_page)) continue; + /* block may become invalid during get_node_page */ + if (check_valid_map(sbi, segno, off) == 0) { + f2fs_put_page(node_page, 1); + continue; + } + /* set page dirty and write it */ if (gc_type == FG_GC) { f2fs_wait_on_page_writeback(node_page, NODE); @@ -531,7 +536,7 @@ static void move_data_page(struct inode *inode, struct page *page, int gc_type) f2fs_wait_on_page_writeback(page, DATA); if (clear_page_dirty_for_io(page)) - inode_dec_dirty_dents(inode); + inode_dec_dirty_pages(inode); set_cold_data(page); do_write_data_page(page, &fio); clear_cold_data(page); @@ -593,7 +598,7 @@ next_step: if (phase == 2) { inode = f2fs_iget(sb, dni.ino); - if (IS_ERR(inode)) + if (IS_ERR(inode) || is_bad_inode(inode)) continue; start_bidx = start_bidx_of_node(nofs, F2FS_I(inode)); @@ -688,17 +693,20 @@ int f2fs_gc(struct f2fs_sb_info *sbi) int gc_type = BG_GC; int nfree = 0; int ret = -1; + struct cp_control cpc = { + .reason = CP_SYNC, + }; INIT_LIST_HEAD(&ilist); gc_more: if (unlikely(!(sbi->sb->s_flags & MS_ACTIVE))) goto stop; - if (unlikely(is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ERROR_FLAG))) + if (unlikely(f2fs_cp_error(sbi))) goto stop; if (gc_type == BG_GC && has_not_enough_free_secs(sbi, nfree)) { gc_type = FG_GC; - write_checkpoint(sbi, false); + write_checkpoint(sbi, &cpc); } if (!__get_victim(sbi, &segno, gc_type, NO_CHECK_TYPE)) @@ -723,7 +731,7 @@ gc_more: goto gc_more; if (gc_type == FG_GC) - write_checkpoint(sbi, false); + write_checkpoint(sbi, &cpc); stop: mutex_unlock(&sbi->gc_mutex); diff --git a/fs/f2fs/gc.h b/fs/f2fs/gc.h index 5d5eb6047bf4..16f0b2b22999 100644 --- a/fs/f2fs/gc.h +++ b/fs/f2fs/gc.h @@ -91,7 +91,7 @@ static inline bool has_enough_invalid_blocks(struct f2fs_sb_info *sbi) block_t invalid_user_blocks = sbi->user_block_count - written_block_count(sbi); /* - * Background GC is triggered with the following condition. + * Background GC is triggered with the following conditions. * 1. There are a number of invalid blocks. * 2. There is not enough free space. */ diff --git a/fs/f2fs/hash.c b/fs/f2fs/hash.c index 948d17bf7281..a844fcfb9a8d 100644 --- a/fs/f2fs/hash.c +++ b/fs/f2fs/hash.c @@ -42,7 +42,8 @@ static void TEA_transform(unsigned int buf[4], unsigned int const in[]) buf[1] += b1; } -static void str2hashbuf(const char *msg, size_t len, unsigned int *buf, int num) +static void str2hashbuf(const unsigned char *msg, size_t len, + unsigned int *buf, int num) { unsigned pad, val; int i; @@ -73,9 +74,9 @@ f2fs_hash_t f2fs_dentry_hash(const struct qstr *name_info) { __u32 hash; f2fs_hash_t f2fs_hash; - const char *p; + const unsigned char *p; __u32 in[8], buf[4]; - const char *name = name_info->name; + const unsigned char *name = name_info->name; size_t len = name_info->len; if ((len <= 2) && (name[0] == '.') && diff --git a/fs/f2fs/inline.c b/fs/f2fs/inline.c index 5beeccef9ae1..88036fd75797 100644 --- a/fs/f2fs/inline.c +++ b/fs/f2fs/inline.c @@ -15,11 +15,13 @@ bool f2fs_may_inline(struct inode *inode) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); block_t nr_blocks; loff_t i_size; - if (!test_opt(sbi, INLINE_DATA)) + if (!test_opt(F2FS_I_SB(inode), INLINE_DATA)) + return false; + + if (f2fs_is_atomic_file(inode)) return false; nr_blocks = F2FS_I(inode)->i_xattr_nid ? 3 : 2; @@ -35,7 +37,6 @@ bool f2fs_may_inline(struct inode *inode) int f2fs_read_inline_data(struct inode *inode, struct page *page) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); struct page *ipage; void *src_addr, *dst_addr; @@ -44,7 +45,7 @@ int f2fs_read_inline_data(struct inode *inode, struct page *page) goto out; } - ipage = get_node_page(sbi, inode->i_ino); + ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); if (IS_ERR(ipage)) { unlock_page(page); return PTR_ERR(ipage); @@ -68,12 +69,12 @@ out: static int __f2fs_convert_inline_data(struct inode *inode, struct page *page) { - int err; + int err = 0; struct page *ipage; struct dnode_of_data dn; void *src_addr, *dst_addr; block_t new_blk_addr; - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct f2fs_io_info fio = { .type = DATA, .rw = WRITE_SYNC | REQ_PRIO, @@ -86,6 +87,10 @@ static int __f2fs_convert_inline_data(struct inode *inode, struct page *page) goto out; } + /* someone else converted inline_data already */ + if (!f2fs_has_inline_data(inode)) + goto out; + /* * i_addr[0] is not used for inline data, * so reserving new block will not destroy inline data @@ -124,9 +129,10 @@ out: return err; } -int f2fs_convert_inline_data(struct inode *inode, pgoff_t to_size) +int f2fs_convert_inline_data(struct inode *inode, pgoff_t to_size, + struct page *page) { - struct page *page; + struct page *new_page = page; int err; if (!f2fs_has_inline_data(inode)) @@ -134,17 +140,20 @@ int f2fs_convert_inline_data(struct inode *inode, pgoff_t to_size) else if (to_size <= MAX_INLINE_DATA) return 0; - page = grab_cache_page(inode->i_mapping, 0); - if (!page) - return -ENOMEM; + if (!page || page->index != 0) { + new_page = grab_cache_page(inode->i_mapping, 0); + if (!new_page) + return -ENOMEM; + } - err = __f2fs_convert_inline_data(inode, page); - f2fs_put_page(page, 1); + err = __f2fs_convert_inline_data(inode, new_page); + if (!page || page->index != 0) + f2fs_put_page(new_page, 1); return err; } int f2fs_write_inline_data(struct inode *inode, - struct page *page, unsigned size) + struct page *page, unsigned size) { void *src_addr, *dst_addr; struct page *ipage; @@ -181,13 +190,12 @@ int f2fs_write_inline_data(struct inode *inode, void truncate_inline_data(struct inode *inode, u64 from) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); struct page *ipage; if (from >= MAX_INLINE_DATA) return; - ipage = get_node_page(sbi, inode->i_ino); + ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); if (IS_ERR(ipage)) return; @@ -199,9 +207,9 @@ void truncate_inline_data(struct inode *inode, u64 from) f2fs_put_page(ipage, 1); } -int recover_inline_data(struct inode *inode, struct page *npage) +bool recover_inline_data(struct inode *inode, struct page *npage) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct f2fs_inode *ri = NULL; void *src_addr, *dst_addr; struct page *ipage; @@ -218,10 +226,10 @@ int recover_inline_data(struct inode *inode, struct page *npage) ri = F2FS_INODE(npage); if (f2fs_has_inline_data(inode) && - ri && ri->i_inline & F2FS_INLINE_DATA) { + ri && (ri->i_inline & F2FS_INLINE_DATA)) { process_inline: ipage = get_node_page(sbi, inode->i_ino); - f2fs_bug_on(IS_ERR(ipage)); + f2fs_bug_on(sbi, IS_ERR(ipage)); f2fs_wait_on_page_writeback(ipage, NODE); @@ -230,22 +238,22 @@ process_inline: memcpy(dst_addr, src_addr, MAX_INLINE_DATA); update_inode(inode, ipage); f2fs_put_page(ipage, 1); - return -1; + return true; } if (f2fs_has_inline_data(inode)) { ipage = get_node_page(sbi, inode->i_ino); - f2fs_bug_on(IS_ERR(ipage)); + f2fs_bug_on(sbi, IS_ERR(ipage)); f2fs_wait_on_page_writeback(ipage, NODE); zero_user_segment(ipage, INLINE_DATA_OFFSET, INLINE_DATA_OFFSET + MAX_INLINE_DATA); clear_inode_flag(F2FS_I(inode), FI_INLINE_DATA); update_inode(inode, ipage); f2fs_put_page(ipage, 1); - } else if (ri && ri->i_inline & F2FS_INLINE_DATA) { - truncate_blocks(inode, 0); + } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) { + truncate_blocks(inode, 0, false); set_inode_flag(F2FS_I(inode), FI_INLINE_DATA); goto process_inline; } - return 0; + return false; } diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c index 2c39999f3868..0deead4505e7 100644 --- a/fs/f2fs/inode.c +++ b/fs/f2fs/inode.c @@ -69,7 +69,7 @@ static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri) static int do_read_inode(struct inode *inode) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct f2fs_inode_info *fi = F2FS_I(inode); struct page *node_page; struct f2fs_inode *ri; @@ -218,7 +218,7 @@ void update_inode(struct inode *inode, struct page *node_page) void update_inode_page(struct inode *inode) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct page *node_page; retry: node_page = get_node_page(sbi, inode->i_ino); @@ -238,7 +238,7 @@ retry: int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); if (inode->i_ino == F2FS_NODE_INO(sbi) || inode->i_ino == F2FS_META_INO(sbi)) @@ -266,9 +266,13 @@ int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) */ void f2fs_evict_inode(struct inode *inode) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); nid_t xnid = F2FS_I(inode)->i_xattr_nid; + /* some remained atomic pages should discarded */ + if (f2fs_is_atomic_file(inode) || f2fs_is_volatile_file(inode)) + commit_inmem_pages(inode, true); + trace_f2fs_evict_inode(inode); truncate_inode_pages_final(&inode->i_data); @@ -276,7 +280,7 @@ void f2fs_evict_inode(struct inode *inode) inode->i_ino == F2FS_META_INO(sbi)) goto out_clear; - f2fs_bug_on(get_dirty_dents(inode)); + f2fs_bug_on(sbi, get_dirty_pages(inode)); remove_dirty_dir_inode(inode); if (inode->i_nlink || is_bad_inode(inode)) @@ -306,3 +310,26 @@ no_delete: out_clear: clear_inode(inode); } + +/* caller should call f2fs_lock_op() */ +void handle_failed_inode(struct inode *inode) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + + clear_nlink(inode); + make_bad_inode(inode); + unlock_new_inode(inode); + + i_size_write(inode, 0); + if (F2FS_HAS_BLOCKS(inode)) + f2fs_truncate(inode); + + remove_inode_page(inode); + stat_dec_inline_inode(inode); + + alloc_nid_failed(sbi, inode->i_ino); + f2fs_unlock_op(sbi); + + /* iput will drop the inode object */ + iput(inode); +} diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c index 27b03776ffd2..0d2526e5aa11 100644 --- a/fs/f2fs/namei.c +++ b/fs/f2fs/namei.c @@ -23,7 +23,7 @@ static struct inode *f2fs_new_inode(struct inode *dir, umode_t mode) { - struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(dir); nid_t ino; struct inode *inode; bool nid_free = false; @@ -102,7 +102,7 @@ static inline void set_cold_files(struct f2fs_sb_info *sbi, struct inode *inode, static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode, bool excl) { - struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(dir); struct inode *inode; nid_t ino = 0; int err; @@ -123,9 +123,9 @@ static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode, f2fs_lock_op(sbi); err = f2fs_add_link(dentry, inode); - f2fs_unlock_op(sbi); if (err) goto out; + f2fs_unlock_op(sbi); alloc_nid_done(sbi, ino); @@ -133,11 +133,7 @@ static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode, unlock_new_inode(inode); return 0; out: - clear_nlink(inode); - unlock_new_inode(inode); - make_bad_inode(inode); - iput(inode); - alloc_nid_failed(sbi, ino); + handle_failed_inode(inode); return err; } @@ -145,7 +141,7 @@ static int f2fs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *dentry) { struct inode *inode = old_dentry->d_inode; - struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(dir); int err; f2fs_balance_fs(sbi); @@ -156,15 +152,16 @@ static int f2fs_link(struct dentry *old_dentry, struct inode *dir, set_inode_flag(F2FS_I(inode), FI_INC_LINK); f2fs_lock_op(sbi); err = f2fs_add_link(dentry, inode); - f2fs_unlock_op(sbi); if (err) goto out; + f2fs_unlock_op(sbi); d_instantiate(dentry, inode); return 0; out: clear_inode_flag(F2FS_I(inode), FI_INC_LINK); iput(inode); + f2fs_unlock_op(sbi); return err; } @@ -205,7 +202,7 @@ static struct dentry *f2fs_lookup(struct inode *dir, struct dentry *dentry, static int f2fs_unlink(struct inode *dir, struct dentry *dentry) { - struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(dir); struct inode *inode = dentry->d_inode; struct f2fs_dir_entry *de; struct page *page; @@ -229,7 +226,7 @@ static int f2fs_unlink(struct inode *dir, struct dentry *dentry) f2fs_delete_entry(de, page, inode); f2fs_unlock_op(sbi); - /* In order to evict this inode, we set it dirty */ + /* In order to evict this inode, we set it dirty */ mark_inode_dirty(inode); fail: trace_f2fs_unlink_exit(inode, err); @@ -239,7 +236,7 @@ fail: static int f2fs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) { - struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(dir); struct inode *inode; size_t symlen = strlen(symname) + 1; int err; @@ -255,9 +252,9 @@ static int f2fs_symlink(struct inode *dir, struct dentry *dentry, f2fs_lock_op(sbi); err = f2fs_add_link(dentry, inode); - f2fs_unlock_op(sbi); if (err) goto out; + f2fs_unlock_op(sbi); err = page_symlink(inode, symname, symlen); alloc_nid_done(sbi, inode->i_ino); @@ -266,17 +263,13 @@ static int f2fs_symlink(struct inode *dir, struct dentry *dentry, unlock_new_inode(inode); return err; out: - clear_nlink(inode); - unlock_new_inode(inode); - make_bad_inode(inode); - iput(inode); - alloc_nid_failed(sbi, inode->i_ino); + handle_failed_inode(inode); return err; } static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) { - struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(dir); struct inode *inode; int err; @@ -294,9 +287,9 @@ static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) set_inode_flag(F2FS_I(inode), FI_INC_LINK); f2fs_lock_op(sbi); err = f2fs_add_link(dentry, inode); - f2fs_unlock_op(sbi); if (err) goto out_fail; + f2fs_unlock_op(sbi); alloc_nid_done(sbi, inode->i_ino); @@ -307,11 +300,7 @@ static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) out_fail: clear_inode_flag(F2FS_I(inode), FI_INC_LINK); - clear_nlink(inode); - unlock_new_inode(inode); - make_bad_inode(inode); - iput(inode); - alloc_nid_failed(sbi, inode->i_ino); + handle_failed_inode(inode); return err; } @@ -326,7 +315,7 @@ static int f2fs_rmdir(struct inode *dir, struct dentry *dentry) static int f2fs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev) { - struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(dir); struct inode *inode; int err = 0; @@ -344,27 +333,23 @@ static int f2fs_mknod(struct inode *dir, struct dentry *dentry, f2fs_lock_op(sbi); err = f2fs_add_link(dentry, inode); - f2fs_unlock_op(sbi); if (err) goto out; + f2fs_unlock_op(sbi); alloc_nid_done(sbi, inode->i_ino); d_instantiate(dentry, inode); unlock_new_inode(inode); return 0; out: - clear_nlink(inode); - unlock_new_inode(inode); - make_bad_inode(inode); - iput(inode); - alloc_nid_failed(sbi, inode->i_ino); + handle_failed_inode(inode); return err; } static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry) { - struct f2fs_sb_info *sbi = F2FS_SB(old_dir->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); struct inode *old_inode = old_dentry->d_inode; struct inode *new_inode = new_dentry->d_inode; struct page *old_dir_page; @@ -488,8 +473,7 @@ out: static int f2fs_cross_rename(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry) { - struct super_block *sb = old_dir->i_sb; - struct f2fs_sb_info *sbi = F2FS_SB(sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(old_dir); struct inode *old_inode = old_dentry->d_inode; struct inode *new_inode = new_dentry->d_inode; struct page *old_dir_page, *new_dir_page; @@ -650,7 +634,7 @@ static int f2fs_rename2(struct inode *old_dir, struct dentry *old_dentry, static int f2fs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) { - struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(dir); struct inode *inode; int err; @@ -686,12 +670,7 @@ static int f2fs_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) release_out: release_orphan_inode(sbi); out: - f2fs_unlock_op(sbi); - clear_nlink(inode); - unlock_new_inode(inode); - make_bad_inode(inode); - iput(inode); - alloc_nid_failed(sbi, inode->i_ino); + handle_failed_inode(inode); return err; } @@ -704,7 +683,6 @@ const struct inode_operations f2fs_dir_inode_operations = { .mkdir = f2fs_mkdir, .rmdir = f2fs_rmdir, .mknod = f2fs_mknod, - .rename = f2fs_rename, .rename2 = f2fs_rename2, .tmpfile = f2fs_tmpfile, .getattr = f2fs_getattr, diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index d3d90d284631..44b8afef43d9 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -54,7 +54,6 @@ bool available_free_memory(struct f2fs_sb_info *sbi, int type) static void clear_node_page_dirty(struct page *page) { struct address_space *mapping = page->mapping; - struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb); unsigned int long flags; if (PageDirty(page)) { @@ -65,7 +64,7 @@ static void clear_node_page_dirty(struct page *page) spin_unlock_irqrestore(&mapping->tree_lock, flags); clear_page_dirty_for_io(page); - dec_page_count(sbi, F2FS_DIRTY_NODES); + dec_page_count(F2FS_M_SB(mapping), F2FS_DIRTY_NODES); } ClearPageUptodate(page); } @@ -92,7 +91,7 @@ static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) /* get current nat block page with lock */ src_page = get_meta_page(sbi, src_off); dst_page = grab_meta_page(sbi, dst_off); - f2fs_bug_on(PageDirty(src_page)); + f2fs_bug_on(sbi, PageDirty(src_page)); src_addr = page_address(src_page); dst_addr = page_address(dst_page); @@ -124,44 +123,99 @@ static void __del_from_nat_cache(struct f2fs_nm_info *nm_i, struct nat_entry *e) kmem_cache_free(nat_entry_slab, e); } -int is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) +static void __set_nat_cache_dirty(struct f2fs_nm_info *nm_i, + struct nat_entry *ne) +{ + nid_t set = NAT_BLOCK_OFFSET(ne->ni.nid); + struct nat_entry_set *head; + + if (get_nat_flag(ne, IS_DIRTY)) + return; +retry: + head = radix_tree_lookup(&nm_i->nat_set_root, set); + if (!head) { + head = f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_ATOMIC); + + INIT_LIST_HEAD(&head->entry_list); + INIT_LIST_HEAD(&head->set_list); + head->set = set; + head->entry_cnt = 0; + + if (radix_tree_insert(&nm_i->nat_set_root, set, head)) { + cond_resched(); + goto retry; + } + } + list_move_tail(&ne->list, &head->entry_list); + nm_i->dirty_nat_cnt++; + head->entry_cnt++; + set_nat_flag(ne, IS_DIRTY, true); +} + +static void __clear_nat_cache_dirty(struct f2fs_nm_info *nm_i, + struct nat_entry *ne) +{ + nid_t set = ne->ni.nid / NAT_ENTRY_PER_BLOCK; + struct nat_entry_set *head; + + head = radix_tree_lookup(&nm_i->nat_set_root, set); + if (head) { + list_move_tail(&ne->list, &nm_i->nat_entries); + set_nat_flag(ne, IS_DIRTY, false); + head->entry_cnt--; + nm_i->dirty_nat_cnt--; + } +} + +static unsigned int __gang_lookup_nat_set(struct f2fs_nm_info *nm_i, + nid_t start, unsigned int nr, struct nat_entry_set **ep) +{ + return radix_tree_gang_lookup(&nm_i->nat_set_root, (void **)ep, + start, nr); +} + +bool is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid) { struct f2fs_nm_info *nm_i = NM_I(sbi); struct nat_entry *e; - int is_cp = 1; + bool is_cp = true; read_lock(&nm_i->nat_tree_lock); e = __lookup_nat_cache(nm_i, nid); - if (e && !e->checkpointed) - is_cp = 0; + if (e && !get_nat_flag(e, IS_CHECKPOINTED)) + is_cp = false; read_unlock(&nm_i->nat_tree_lock); return is_cp; } -bool fsync_mark_done(struct f2fs_sb_info *sbi, nid_t nid) +bool has_fsynced_inode(struct f2fs_sb_info *sbi, nid_t ino) { struct f2fs_nm_info *nm_i = NM_I(sbi); struct nat_entry *e; - bool fsync_done = false; + bool fsynced = false; read_lock(&nm_i->nat_tree_lock); - e = __lookup_nat_cache(nm_i, nid); - if (e) - fsync_done = e->fsync_done; + e = __lookup_nat_cache(nm_i, ino); + if (e && get_nat_flag(e, HAS_FSYNCED_INODE)) + fsynced = true; read_unlock(&nm_i->nat_tree_lock); - return fsync_done; + return fsynced; } -void fsync_mark_clear(struct f2fs_sb_info *sbi, nid_t nid) +bool need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino) { struct f2fs_nm_info *nm_i = NM_I(sbi); struct nat_entry *e; + bool need_update = true; - write_lock(&nm_i->nat_tree_lock); - e = __lookup_nat_cache(nm_i, nid); - if (e) - e->fsync_done = false; - write_unlock(&nm_i->nat_tree_lock); + read_lock(&nm_i->nat_tree_lock); + e = __lookup_nat_cache(nm_i, ino); + if (e && get_nat_flag(e, HAS_LAST_FSYNC) && + (get_nat_flag(e, IS_CHECKPOINTED) || + get_nat_flag(e, HAS_FSYNCED_INODE))) + need_update = false; + read_unlock(&nm_i->nat_tree_lock); + return need_update; } static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid) @@ -177,7 +231,7 @@ static struct nat_entry *grab_nat_entry(struct f2fs_nm_info *nm_i, nid_t nid) } memset(new, 0, sizeof(struct nat_entry)); nat_set_nid(new, nid); - new->checkpointed = true; + nat_reset_flag(new); list_add_tail(&new->list, &nm_i->nat_entries); nm_i->nat_cnt++; return new; @@ -216,7 +270,7 @@ retry: goto retry; } e->ni = *ni; - f2fs_bug_on(ni->blk_addr == NEW_ADDR); + f2fs_bug_on(sbi, ni->blk_addr == NEW_ADDR); } else if (new_blkaddr == NEW_ADDR) { /* * when nid is reallocated, @@ -224,20 +278,20 @@ retry: * So, reinitialize it with new information. */ e->ni = *ni; - f2fs_bug_on(ni->blk_addr != NULL_ADDR); + f2fs_bug_on(sbi, ni->blk_addr != NULL_ADDR); } /* sanity check */ - f2fs_bug_on(nat_get_blkaddr(e) != ni->blk_addr); - f2fs_bug_on(nat_get_blkaddr(e) == NULL_ADDR && + f2fs_bug_on(sbi, nat_get_blkaddr(e) != ni->blk_addr); + f2fs_bug_on(sbi, nat_get_blkaddr(e) == NULL_ADDR && new_blkaddr == NULL_ADDR); - f2fs_bug_on(nat_get_blkaddr(e) == NEW_ADDR && + f2fs_bug_on(sbi, nat_get_blkaddr(e) == NEW_ADDR && new_blkaddr == NEW_ADDR); - f2fs_bug_on(nat_get_blkaddr(e) != NEW_ADDR && + f2fs_bug_on(sbi, nat_get_blkaddr(e) != NEW_ADDR && nat_get_blkaddr(e) != NULL_ADDR && new_blkaddr == NEW_ADDR); - /* increament version no as node is removed */ + /* increment version no as node is removed */ if (nat_get_blkaddr(e) != NEW_ADDR && new_blkaddr == NULL_ADDR) { unsigned char version = nat_get_version(e); nat_set_version(e, inc_node_version(version)); @@ -245,12 +299,17 @@ retry: /* change address */ nat_set_blkaddr(e, new_blkaddr); + if (new_blkaddr == NEW_ADDR || new_blkaddr == NULL_ADDR) + set_nat_flag(e, IS_CHECKPOINTED, false); __set_nat_cache_dirty(nm_i, e); /* update fsync_mark if its inode nat entry is still alive */ e = __lookup_nat_cache(nm_i, ni->ino); - if (e) - e->fsync_done = fsync_done; + if (e) { + if (fsync_done && ni->nid == ni->ino) + set_nat_flag(e, HAS_FSYNCED_INODE, true); + set_nat_flag(e, HAS_LAST_FSYNC, fsync_done); + } write_unlock(&nm_i->nat_tree_lock); } @@ -274,7 +333,7 @@ int try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink) } /* - * This function returns always success + * This function always returns success */ void get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni) { @@ -411,7 +470,7 @@ got: */ int get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode) { - struct f2fs_sb_info *sbi = F2FS_SB(dn->inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); struct page *npage[4]; struct page *parent; int offset[4]; @@ -504,15 +563,15 @@ release_out: static void truncate_node(struct dnode_of_data *dn) { - struct f2fs_sb_info *sbi = F2FS_SB(dn->inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); struct node_info ni; get_node_info(sbi, dn->nid, &ni); if (dn->inode->i_blocks == 0) { - f2fs_bug_on(ni.blk_addr != NULL_ADDR); + f2fs_bug_on(sbi, ni.blk_addr != NULL_ADDR); goto invalidate; } - f2fs_bug_on(ni.blk_addr == NULL_ADDR); + f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); /* Deallocate node address */ invalidate_blocks(sbi, ni.blk_addr); @@ -540,14 +599,13 @@ invalidate: static int truncate_dnode(struct dnode_of_data *dn) { - struct f2fs_sb_info *sbi = F2FS_SB(dn->inode->i_sb); struct page *page; if (dn->nid == 0) return 1; /* get direct node */ - page = get_node_page(sbi, dn->nid); + page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); if (IS_ERR(page) && PTR_ERR(page) == -ENOENT) return 1; else if (IS_ERR(page)) @@ -564,7 +622,6 @@ static int truncate_dnode(struct dnode_of_data *dn) static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, int ofs, int depth) { - struct f2fs_sb_info *sbi = F2FS_SB(dn->inode->i_sb); struct dnode_of_data rdn = *dn; struct page *page; struct f2fs_node *rn; @@ -578,7 +635,7 @@ static int truncate_nodes(struct dnode_of_data *dn, unsigned int nofs, trace_f2fs_truncate_nodes_enter(dn->inode, dn->nid, dn->data_blkaddr); - page = get_node_page(sbi, dn->nid); + page = get_node_page(F2FS_I_SB(dn->inode), dn->nid); if (IS_ERR(page)) { trace_f2fs_truncate_nodes_exit(dn->inode, PTR_ERR(page)); return PTR_ERR(page); @@ -636,7 +693,6 @@ out_err: static int truncate_partial_nodes(struct dnode_of_data *dn, struct f2fs_inode *ri, int *offset, int depth) { - struct f2fs_sb_info *sbi = F2FS_SB(dn->inode->i_sb); struct page *pages[2]; nid_t nid[3]; nid_t child_nid; @@ -650,8 +706,8 @@ static int truncate_partial_nodes(struct dnode_of_data *dn, /* get indirect nodes in the path */ for (i = 0; i < idx + 1; i++) { - /* refernece count'll be increased */ - pages[i] = get_node_page(sbi, nid[i]); + /* reference count'll be increased */ + pages[i] = get_node_page(F2FS_I_SB(dn->inode), nid[i]); if (IS_ERR(pages[i])) { err = PTR_ERR(pages[i]); idx = i - 1; @@ -696,7 +752,7 @@ fail: */ int truncate_inode_blocks(struct inode *inode, pgoff_t from) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); int err = 0, cont = 1; int level, offset[4], noffset[4]; unsigned int nofs = 0; @@ -792,7 +848,7 @@ fail: int truncate_xattr_node(struct inode *inode, struct page *page) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); nid_t nid = F2FS_I(inode)->i_xattr_nid; struct dnode_of_data dn; struct page *npage; @@ -823,22 +879,27 @@ int truncate_xattr_node(struct inode *inode, struct page *page) */ void remove_inode_page(struct inode *inode) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); - struct page *page; - nid_t ino = inode->i_ino; struct dnode_of_data dn; - page = get_node_page(sbi, ino); - if (IS_ERR(page)) + set_new_dnode(&dn, inode, NULL, NULL, inode->i_ino); + if (get_dnode_of_data(&dn, 0, LOOKUP_NODE)) return; - if (truncate_xattr_node(inode, page)) { - f2fs_put_page(page, 1); + if (truncate_xattr_node(inode, dn.inode_page)) { + f2fs_put_dnode(&dn); return; } - /* 0 is possible, after f2fs_new_inode() is failed */ - f2fs_bug_on(inode->i_blocks != 0 && inode->i_blocks != 1); - set_new_dnode(&dn, inode, page, page, ino); + + /* remove potential inline_data blocks */ + if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || + S_ISLNK(inode->i_mode)) + truncate_data_blocks_range(&dn, 1); + + /* 0 is possible, after f2fs_new_inode() has failed */ + f2fs_bug_on(F2FS_I_SB(inode), + inode->i_blocks != 0 && inode->i_blocks != 1); + + /* will put inode & node pages */ truncate_node(&dn); } @@ -856,7 +917,7 @@ struct page *new_inode_page(struct inode *inode) struct page *new_node_page(struct dnode_of_data *dn, unsigned int ofs, struct page *ipage) { - struct f2fs_sb_info *sbi = F2FS_SB(dn->inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); struct node_info old_ni, new_ni; struct page *page; int err; @@ -876,7 +937,7 @@ struct page *new_node_page(struct dnode_of_data *dn, get_node_info(sbi, dn->nid, &old_ni); /* Reinitialize old_ni with new node page */ - f2fs_bug_on(old_ni.blk_addr != NULL_ADDR); + f2fs_bug_on(sbi, old_ni.blk_addr != NULL_ADDR); new_ni = old_ni; new_ni.ino = dn->inode->i_ino; set_node_addr(sbi, &new_ni, NEW_ADDR, false); @@ -914,7 +975,7 @@ fail: */ static int read_node_page(struct page *page, int rw) { - struct f2fs_sb_info *sbi = F2FS_SB(page->mapping->host->i_sb); + struct f2fs_sb_info *sbi = F2FS_P_SB(page); struct node_info ni; get_node_info(sbi, page->index, &ni); @@ -990,7 +1051,7 @@ got_it: */ struct page *get_node_page_ra(struct page *parent, int start) { - struct f2fs_sb_info *sbi = F2FS_SB(parent->mapping->host->i_sb); + struct f2fs_sb_info *sbi = F2FS_P_SB(parent); struct blk_plug plug; struct page *page; int err, i, end; @@ -1120,17 +1181,24 @@ continue_unlock: /* called by fsync() */ if (ino && IS_DNODE(page)) { - int mark = !is_checkpointed_node(sbi, ino); set_fsync_mark(page, 1); - if (IS_INODE(page)) - set_dentry_mark(page, mark); + if (IS_INODE(page)) { + if (!is_checkpointed_node(sbi, ino) && + !has_fsynced_inode(sbi, ino)) + set_dentry_mark(page, 1); + else + set_dentry_mark(page, 0); + } nwritten++; } else { set_fsync_mark(page, 0); set_dentry_mark(page, 0); } - NODE_MAPPING(sbi)->a_ops->writepage(page, wbc); - wrote++; + + if (NODE_MAPPING(sbi)->a_ops->writepage(page, wbc)) + unlock_page(page); + else + wrote++; if (--wbc->nr_to_write == 0) break; @@ -1199,7 +1267,7 @@ int wait_on_node_pages_writeback(struct f2fs_sb_info *sbi, nid_t ino) static int f2fs_write_node_page(struct page *page, struct writeback_control *wbc) { - struct f2fs_sb_info *sbi = F2FS_SB(page->mapping->host->i_sb); + struct f2fs_sb_info *sbi = F2FS_P_SB(page); nid_t nid; block_t new_addr; struct node_info ni; @@ -1212,12 +1280,14 @@ static int f2fs_write_node_page(struct page *page, if (unlikely(sbi->por_doing)) goto redirty_out; + if (unlikely(f2fs_cp_error(sbi))) + goto redirty_out; f2fs_wait_on_page_writeback(page, NODE); /* get old block addr of this node page */ nid = nid_of_node(page); - f2fs_bug_on(page->index != nid); + f2fs_bug_on(sbi, page->index != nid); get_node_info(sbi, nid, &ni); @@ -1248,7 +1318,7 @@ redirty_out: static int f2fs_write_node_pages(struct address_space *mapping, struct writeback_control *wbc) { - struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb); + struct f2fs_sb_info *sbi = F2FS_M_SB(mapping); long diff; trace_f2fs_writepages(mapping->host, wbc, NODE); @@ -1273,15 +1343,12 @@ skip_write: static int f2fs_set_node_page_dirty(struct page *page) { - struct address_space *mapping = page->mapping; - struct f2fs_sb_info *sbi = F2FS_SB(mapping->host->i_sb); - trace_f2fs_set_page_dirty(page, NODE); SetPageUptodate(page); if (!PageDirty(page)) { __set_page_dirty_nobuffers(page); - inc_page_count(sbi, F2FS_DIRTY_NODES); + inc_page_count(F2FS_P_SB(page), F2FS_DIRTY_NODES); SetPagePrivate(page); return 1; } @@ -1292,9 +1359,8 @@ static void f2fs_invalidate_node_page(struct page *page, unsigned int offset, unsigned int length) { struct inode *inode = page->mapping->host; - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); if (PageDirty(page)) - dec_page_count(sbi, F2FS_DIRTY_NODES); + dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_NODES); ClearPagePrivate(page); } @@ -1347,7 +1413,8 @@ static int add_free_nid(struct f2fs_sb_info *sbi, nid_t nid, bool build) read_lock(&nm_i->nat_tree_lock); ne = __lookup_nat_cache(nm_i, nid); if (ne && - (!ne->checkpointed || nat_get_blkaddr(ne) != NULL_ADDR)) + (!get_nat_flag(ne, IS_CHECKPOINTED) || + nat_get_blkaddr(ne) != NULL_ADDR)) allocated = true; read_unlock(&nm_i->nat_tree_lock); if (allocated) @@ -1404,7 +1471,7 @@ static void scan_nat_page(struct f2fs_sb_info *sbi, break; blk_addr = le32_to_cpu(nat_blk->entries[i].block_addr); - f2fs_bug_on(blk_addr == NEW_ADDR); + f2fs_bug_on(sbi, blk_addr == NEW_ADDR); if (blk_addr == NULL_ADDR) { if (add_free_nid(sbi, start_nid, true) < 0) break; @@ -1474,12 +1541,12 @@ retry: /* We should not use stale free nids created by build_free_nids */ if (nm_i->fcnt && !on_build_free_nids(nm_i)) { - f2fs_bug_on(list_empty(&nm_i->free_nid_list)); + f2fs_bug_on(sbi, list_empty(&nm_i->free_nid_list)); list_for_each_entry(i, &nm_i->free_nid_list, list) if (i->state == NID_NEW) break; - f2fs_bug_on(i->state != NID_NEW); + f2fs_bug_on(sbi, i->state != NID_NEW); *nid = i->nid; i->state = NID_ALLOC; nm_i->fcnt--; @@ -1505,7 +1572,7 @@ void alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid) spin_lock(&nm_i->free_nid_list_lock); i = __lookup_free_nid_list(nm_i, nid); - f2fs_bug_on(!i || i->state != NID_ALLOC); + f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); __del_from_free_nid_list(nm_i, i); spin_unlock(&nm_i->free_nid_list_lock); @@ -1526,7 +1593,7 @@ void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) spin_lock(&nm_i->free_nid_list_lock); i = __lookup_free_nid_list(nm_i, nid); - f2fs_bug_on(!i || i->state != NID_ALLOC); + f2fs_bug_on(sbi, !i || i->state != NID_ALLOC); if (!available_free_memory(sbi, FREE_NIDS)) { __del_from_free_nid_list(nm_i, i); need_free = true; @@ -1540,35 +1607,21 @@ void alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid) kmem_cache_free(free_nid_slab, i); } -void recover_node_page(struct f2fs_sb_info *sbi, struct page *page, - struct f2fs_summary *sum, struct node_info *ni, - block_t new_blkaddr) -{ - rewrite_node_page(sbi, page, sum, ni->blk_addr, new_blkaddr); - set_node_addr(sbi, ni, new_blkaddr, false); - clear_node_page_dirty(page); -} - void recover_inline_xattr(struct inode *inode, struct page *page) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); void *src_addr, *dst_addr; size_t inline_size; struct page *ipage; struct f2fs_inode *ri; - if (!f2fs_has_inline_xattr(inode)) - return; - - if (!IS_INODE(page)) - return; + ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino); + f2fs_bug_on(F2FS_I_SB(inode), IS_ERR(ipage)); ri = F2FS_INODE(page); - if (!(ri->i_inline & F2FS_INLINE_XATTR)) - return; - - ipage = get_node_page(sbi, inode->i_ino); - f2fs_bug_on(IS_ERR(ipage)); + if (!(ri->i_inline & F2FS_INLINE_XATTR)) { + clear_inode_flag(F2FS_I(inode), FI_INLINE_XATTR); + goto update_inode; + } dst_addr = inline_xattr_addr(ipage); src_addr = inline_xattr_addr(page); @@ -1576,28 +1629,25 @@ void recover_inline_xattr(struct inode *inode, struct page *page) f2fs_wait_on_page_writeback(ipage, NODE); memcpy(dst_addr, src_addr, inline_size); - +update_inode: update_inode(inode, ipage); f2fs_put_page(ipage, 1); } -bool recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr) +void recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); nid_t prev_xnid = F2FS_I(inode)->i_xattr_nid; nid_t new_xnid = nid_of_node(page); struct node_info ni; - if (!f2fs_has_xattr_block(ofs_of_node(page))) - return false; - /* 1: invalidate the previous xattr nid */ if (!prev_xnid) goto recover_xnid; /* Deallocate node address */ get_node_info(sbi, prev_xnid, &ni); - f2fs_bug_on(ni.blk_addr == NULL_ADDR); + f2fs_bug_on(sbi, ni.blk_addr == NULL_ADDR); invalidate_blocks(sbi, ni.blk_addr); dec_valid_node_count(sbi, inode); set_node_addr(sbi, &ni, NULL_ADDR, false); @@ -1605,7 +1655,7 @@ bool recover_xattr_data(struct inode *inode, struct page *page, block_t blkaddr) recover_xnid: /* 2: allocate new xattr nid */ if (unlikely(!inc_valid_node_count(sbi, inode))) - f2fs_bug_on(1); + f2fs_bug_on(sbi, 1); remove_free_nid(NM_I(sbi), new_xnid); get_node_info(sbi, new_xnid, &ni); @@ -1618,7 +1668,6 @@ recover_xnid: set_node_addr(sbi, &ni, blkaddr, false); update_inode_page(inode); - return true; } int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) @@ -1637,7 +1686,7 @@ int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) if (!ipage) return -ENOMEM; - /* Should not use this inode from free nid list */ + /* Should not use this inode from free nid list */ remove_free_nid(NM_I(sbi), ino); SetPageUptodate(ipage); @@ -1651,6 +1700,7 @@ int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) dst->i_blocks = cpu_to_le64(1); dst->i_links = cpu_to_le32(1); dst->i_xattr_nid = 0; + dst->i_inline = src->i_inline & F2FS_INLINE_XATTR; new_ni = old_ni; new_ni.ino = ino; @@ -1659,13 +1709,14 @@ int recover_inode_page(struct f2fs_sb_info *sbi, struct page *page) WARN_ON(1); set_node_addr(sbi, &new_ni, NEW_ADDR, false); inc_valid_inode_count(sbi); + set_page_dirty(ipage); f2fs_put_page(ipage, 1); return 0; } /* * ra_sum_pages() merge contiguous pages into one bio and submit. - * these pre-readed pages are alloced in bd_inode's mapping tree. + * these pre-read pages are allocated in bd_inode's mapping tree. */ static int ra_sum_pages(struct f2fs_sb_info *sbi, struct page **pages, int start, int nrpages) @@ -1697,7 +1748,7 @@ int restore_node_summary(struct f2fs_sb_info *sbi, struct f2fs_summary *sum_entry; struct inode *inode = sbi->sb->s_bdev->bd_inode; block_t addr; - int bio_blocks = MAX_BIO_BLOCKS(max_hw_blocks(sbi)); + int bio_blocks = MAX_BIO_BLOCKS(sbi); struct page *pages[bio_blocks]; int i, idx, last_offset, nrpages, err = 0; @@ -1709,7 +1760,7 @@ int restore_node_summary(struct f2fs_sb_info *sbi, for (i = 0; !err && i < last_offset; i += nrpages, addr += nrpages) { nrpages = min(last_offset - i, bio_blocks); - /* read ahead node pages */ + /* readahead node pages */ nrpages = ra_sum_pages(sbi, pages, addr, nrpages); if (!nrpages) return -ENOMEM; @@ -1739,89 +1790,6 @@ skip: return err; } -static struct nat_entry_set *grab_nat_entry_set(void) -{ - struct nat_entry_set *nes = - f2fs_kmem_cache_alloc(nat_entry_set_slab, GFP_ATOMIC); - - nes->entry_cnt = 0; - INIT_LIST_HEAD(&nes->set_list); - INIT_LIST_HEAD(&nes->entry_list); - return nes; -} - -static void release_nat_entry_set(struct nat_entry_set *nes, - struct f2fs_nm_info *nm_i) -{ - f2fs_bug_on(!list_empty(&nes->entry_list)); - - nm_i->dirty_nat_cnt -= nes->entry_cnt; - list_del(&nes->set_list); - kmem_cache_free(nat_entry_set_slab, nes); -} - -static void adjust_nat_entry_set(struct nat_entry_set *nes, - struct list_head *head) -{ - struct nat_entry_set *next = nes; - - if (list_is_last(&nes->set_list, head)) - return; - - list_for_each_entry_continue(next, head, set_list) - if (nes->entry_cnt <= next->entry_cnt) - break; - - list_move_tail(&nes->set_list, &next->set_list); -} - -static void add_nat_entry(struct nat_entry *ne, struct list_head *head) -{ - struct nat_entry_set *nes; - nid_t start_nid = START_NID(ne->ni.nid); - - list_for_each_entry(nes, head, set_list) { - if (nes->start_nid == start_nid) { - list_move_tail(&ne->list, &nes->entry_list); - nes->entry_cnt++; - adjust_nat_entry_set(nes, head); - return; - } - } - - nes = grab_nat_entry_set(); - - nes->start_nid = start_nid; - list_move_tail(&ne->list, &nes->entry_list); - nes->entry_cnt++; - list_add(&nes->set_list, head); -} - -static void merge_nats_in_set(struct f2fs_sb_info *sbi) -{ - struct f2fs_nm_info *nm_i = NM_I(sbi); - struct list_head *dirty_list = &nm_i->dirty_nat_entries; - struct list_head *set_list = &nm_i->nat_entry_set; - struct nat_entry *ne, *tmp; - - write_lock(&nm_i->nat_tree_lock); - list_for_each_entry_safe(ne, tmp, dirty_list, list) { - if (nat_get_blkaddr(ne) == NEW_ADDR) - continue; - add_nat_entry(ne, set_list); - nm_i->dirty_nat_cnt++; - } - write_unlock(&nm_i->nat_tree_lock); -} - -static bool __has_cursum_space(struct f2fs_summary_block *sum, int size) -{ - if (nats_in_cursum(sum) + size <= NAT_JOURNAL_ENTRIES) - return true; - else - return false; -} - static void remove_nats_in_journal(struct f2fs_sb_info *sbi) { struct f2fs_nm_info *nm_i = NM_I(sbi); @@ -1856,99 +1824,130 @@ found: mutex_unlock(&curseg->curseg_mutex); } -/* - * This function is called during the checkpointing process. - */ -void flush_nat_entries(struct f2fs_sb_info *sbi) +static void __adjust_nat_entry_set(struct nat_entry_set *nes, + struct list_head *head, int max) { - struct f2fs_nm_info *nm_i = NM_I(sbi); - struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); - struct f2fs_summary_block *sum = curseg->sum_blk; - struct nat_entry_set *nes, *tmp; - struct list_head *head = &nm_i->nat_entry_set; - bool to_journal = true; + struct nat_entry_set *cur; - /* merge nat entries of dirty list to nat entry set temporarily */ - merge_nats_in_set(sbi); + if (nes->entry_cnt >= max) + goto add_out; - /* - * if there are no enough space in journal to store dirty nat - * entries, remove all entries from journal and merge them - * into nat entry set. - */ - if (!__has_cursum_space(sum, nm_i->dirty_nat_cnt)) { - remove_nats_in_journal(sbi); - - /* - * merge nat entries of dirty list to nat entry set temporarily - */ - merge_nats_in_set(sbi); + list_for_each_entry(cur, head, set_list) { + if (cur->entry_cnt >= nes->entry_cnt) { + list_add(&nes->set_list, cur->set_list.prev); + return; + } } +add_out: + list_add_tail(&nes->set_list, head); +} - if (!nm_i->dirty_nat_cnt) - return; +static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, + struct nat_entry_set *set) +{ + struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); + struct f2fs_summary_block *sum = curseg->sum_blk; + nid_t start_nid = set->set * NAT_ENTRY_PER_BLOCK; + bool to_journal = true; + struct f2fs_nat_block *nat_blk; + struct nat_entry *ne, *cur; + struct page *page = NULL; /* * there are two steps to flush nat entries: * #1, flush nat entries to journal in current hot data summary block. * #2, flush nat entries to nat page. */ - list_for_each_entry_safe(nes, tmp, head, set_list) { - struct f2fs_nat_block *nat_blk; - struct nat_entry *ne, *cur; - struct page *page; - nid_t start_nid = nes->start_nid; + if (!__has_cursum_space(sum, set->entry_cnt, NAT_JOURNAL)) + to_journal = false; - if (to_journal && !__has_cursum_space(sum, nes->entry_cnt)) - to_journal = false; + if (to_journal) { + mutex_lock(&curseg->curseg_mutex); + } else { + page = get_next_nat_page(sbi, start_nid); + nat_blk = page_address(page); + f2fs_bug_on(sbi, !nat_blk); + } + + /* flush dirty nats in nat entry set */ + list_for_each_entry_safe(ne, cur, &set->entry_list, list) { + struct f2fs_nat_entry *raw_ne; + nid_t nid = nat_get_nid(ne); + int offset; + + if (nat_get_blkaddr(ne) == NEW_ADDR) + continue; if (to_journal) { - mutex_lock(&curseg->curseg_mutex); + offset = lookup_journal_in_cursum(sum, + NAT_JOURNAL, nid, 1); + f2fs_bug_on(sbi, offset < 0); + raw_ne = &nat_in_journal(sum, offset); + nid_in_journal(sum, offset) = cpu_to_le32(nid); } else { - page = get_next_nat_page(sbi, start_nid); - nat_blk = page_address(page); - f2fs_bug_on(!nat_blk); + raw_ne = &nat_blk->entries[nid - start_nid]; } + raw_nat_from_node_info(raw_ne, &ne->ni); - /* flush dirty nats in nat entry set */ - list_for_each_entry_safe(ne, cur, &nes->entry_list, list) { - struct f2fs_nat_entry *raw_ne; - nid_t nid = nat_get_nid(ne); - int offset; + write_lock(&NM_I(sbi)->nat_tree_lock); + nat_reset_flag(ne); + __clear_nat_cache_dirty(NM_I(sbi), ne); + write_unlock(&NM_I(sbi)->nat_tree_lock); - if (to_journal) { - offset = lookup_journal_in_cursum(sum, - NAT_JOURNAL, nid, 1); - f2fs_bug_on(offset < 0); - raw_ne = &nat_in_journal(sum, offset); - nid_in_journal(sum, offset) = cpu_to_le32(nid); - } else { - raw_ne = &nat_blk->entries[nid - start_nid]; - } - raw_nat_from_node_info(raw_ne, &ne->ni); + if (nat_get_blkaddr(ne) == NULL_ADDR) + add_free_nid(sbi, nid, false); + } - if (nat_get_blkaddr(ne) == NULL_ADDR && - add_free_nid(sbi, nid, false) <= 0) { - write_lock(&nm_i->nat_tree_lock); - __del_from_nat_cache(nm_i, ne); - write_unlock(&nm_i->nat_tree_lock); - } else { - write_lock(&nm_i->nat_tree_lock); - __clear_nat_cache_dirty(nm_i, ne); - write_unlock(&nm_i->nat_tree_lock); - } - } + if (to_journal) + mutex_unlock(&curseg->curseg_mutex); + else + f2fs_put_page(page, 1); - if (to_journal) - mutex_unlock(&curseg->curseg_mutex); - else - f2fs_put_page(page, 1); + if (!set->entry_cnt) { + radix_tree_delete(&NM_I(sbi)->nat_set_root, set->set); + kmem_cache_free(nat_entry_set_slab, set); + } +} - release_nat_entry_set(nes, nm_i); +/* + * This function is called during the checkpointing process. + */ +void flush_nat_entries(struct f2fs_sb_info *sbi) +{ + struct f2fs_nm_info *nm_i = NM_I(sbi); + struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_HOT_DATA); + struct f2fs_summary_block *sum = curseg->sum_blk; + struct nat_entry_set *setvec[NATVEC_SIZE]; + struct nat_entry_set *set, *tmp; + unsigned int found; + nid_t set_idx = 0; + LIST_HEAD(sets); + + /* + * if there are no enough space in journal to store dirty nat + * entries, remove all entries from journal and merge them + * into nat entry set. + */ + if (!__has_cursum_space(sum, nm_i->dirty_nat_cnt, NAT_JOURNAL)) + remove_nats_in_journal(sbi); + + if (!nm_i->dirty_nat_cnt) + return; + + while ((found = __gang_lookup_nat_set(nm_i, + set_idx, NATVEC_SIZE, setvec))) { + unsigned idx; + set_idx = setvec[found - 1]->set + 1; + for (idx = 0; idx < found; idx++) + __adjust_nat_entry_set(setvec[idx], &sets, + MAX_NAT_JENTRIES(sum)); } - f2fs_bug_on(!list_empty(head)); - f2fs_bug_on(nm_i->dirty_nat_cnt); + /* flush dirty nats in nat entry set */ + list_for_each_entry_safe(set, tmp, &sets, set_list) + __flush_nat_entry_set(sbi, set); + + f2fs_bug_on(sbi, nm_i->dirty_nat_cnt); } static int init_node_manager(struct f2fs_sb_info *sbi) @@ -1967,7 +1966,7 @@ static int init_node_manager(struct f2fs_sb_info *sbi) nm_i->max_nid = NAT_ENTRY_PER_BLOCK * nat_blocks; /* not used nids: 0, node, meta, (and root counted as valid node) */ - nm_i->available_nids = nm_i->max_nid - 3; + nm_i->available_nids = nm_i->max_nid - F2FS_RESERVED_NODE_NUM; nm_i->fcnt = 0; nm_i->nat_cnt = 0; nm_i->ram_thresh = DEF_RAM_THRESHOLD; @@ -1975,9 +1974,8 @@ static int init_node_manager(struct f2fs_sb_info *sbi) INIT_RADIX_TREE(&nm_i->free_nid_root, GFP_ATOMIC); INIT_LIST_HEAD(&nm_i->free_nid_list); INIT_RADIX_TREE(&nm_i->nat_root, GFP_ATOMIC); + INIT_RADIX_TREE(&nm_i->nat_set_root, GFP_ATOMIC); INIT_LIST_HEAD(&nm_i->nat_entries); - INIT_LIST_HEAD(&nm_i->dirty_nat_entries); - INIT_LIST_HEAD(&nm_i->nat_entry_set); mutex_init(&nm_i->build_lock); spin_lock_init(&nm_i->free_nid_list_lock); @@ -2026,14 +2024,14 @@ void destroy_node_manager(struct f2fs_sb_info *sbi) /* destroy free nid list */ spin_lock(&nm_i->free_nid_list_lock); list_for_each_entry_safe(i, next_i, &nm_i->free_nid_list, list) { - f2fs_bug_on(i->state == NID_ALLOC); + f2fs_bug_on(sbi, i->state == NID_ALLOC); __del_from_free_nid_list(nm_i, i); nm_i->fcnt--; spin_unlock(&nm_i->free_nid_list_lock); kmem_cache_free(free_nid_slab, i); spin_lock(&nm_i->free_nid_list_lock); } - f2fs_bug_on(nm_i->fcnt); + f2fs_bug_on(sbi, nm_i->fcnt); spin_unlock(&nm_i->free_nid_list_lock); /* destroy nat cache */ @@ -2045,7 +2043,7 @@ void destroy_node_manager(struct f2fs_sb_info *sbi) for (idx = 0; idx < found; idx++) __del_from_nat_cache(nm_i, natvec[idx]); } - f2fs_bug_on(nm_i->nat_cnt); + f2fs_bug_on(sbi, nm_i->nat_cnt); write_unlock(&nm_i->nat_tree_lock); kfree(nm_i->nat_bitmap); diff --git a/fs/f2fs/node.h b/fs/f2fs/node.h index 8a116a407599..8d5e6e0dd840 100644 --- a/fs/f2fs/node.h +++ b/fs/f2fs/node.h @@ -39,10 +39,16 @@ struct node_info { unsigned char version; /* version of the node */ }; +enum { + IS_CHECKPOINTED, /* is it checkpointed before? */ + HAS_FSYNCED_INODE, /* is the inode fsynced before? */ + HAS_LAST_FSYNC, /* has the latest node fsync mark? */ + IS_DIRTY, /* this nat entry is dirty? */ +}; + struct nat_entry { struct list_head list; /* for clean or dirty nat list */ - bool checkpointed; /* whether it is checkpointed or not */ - bool fsync_done; /* whether the latest node has fsync mark */ + unsigned char flag; /* for node information bits */ struct node_info ni; /* in-memory node information */ }; @@ -55,18 +61,32 @@ struct nat_entry { #define nat_get_version(nat) (nat->ni.version) #define nat_set_version(nat, v) (nat->ni.version = v) -#define __set_nat_cache_dirty(nm_i, ne) \ - do { \ - ne->checkpointed = false; \ - list_move_tail(&ne->list, &nm_i->dirty_nat_entries); \ - } while (0) -#define __clear_nat_cache_dirty(nm_i, ne) \ - do { \ - ne->checkpointed = true; \ - list_move_tail(&ne->list, &nm_i->nat_entries); \ - } while (0) #define inc_node_version(version) (++version) +static inline void set_nat_flag(struct nat_entry *ne, + unsigned int type, bool set) +{ + unsigned char mask = 0x01 << type; + if (set) + ne->flag |= mask; + else + ne->flag &= ~mask; +} + +static inline bool get_nat_flag(struct nat_entry *ne, unsigned int type) +{ + unsigned char mask = 0x01 << type; + return ne->flag & mask; +} + +static inline void nat_reset_flag(struct nat_entry *ne) +{ + /* these states can be set only after checkpoint was done */ + set_nat_flag(ne, IS_CHECKPOINTED, true); + set_nat_flag(ne, HAS_FSYNCED_INODE, false); + set_nat_flag(ne, HAS_LAST_FSYNC, true); +} + static inline void node_info_from_raw_nat(struct node_info *ni, struct f2fs_nat_entry *raw_ne) { @@ -90,9 +110,9 @@ enum mem_type { }; struct nat_entry_set { - struct list_head set_list; /* link with all nat sets */ + struct list_head set_list; /* link with other nat sets */ struct list_head entry_list; /* link with dirty nat entries */ - nid_t start_nid; /* start nid of nats in set */ + nid_t set; /* set number*/ unsigned int entry_cnt; /* the # of nat entries in set */ }; @@ -110,18 +130,19 @@ struct free_nid { int state; /* in use or not: NID_NEW or NID_ALLOC */ }; -static inline int next_free_nid(struct f2fs_sb_info *sbi, nid_t *nid) +static inline void next_free_nid(struct f2fs_sb_info *sbi, nid_t *nid) { struct f2fs_nm_info *nm_i = NM_I(sbi); struct free_nid *fnid; - if (nm_i->fcnt <= 0) - return -1; spin_lock(&nm_i->free_nid_list_lock); + if (nm_i->fcnt <= 0) { + spin_unlock(&nm_i->free_nid_list_lock); + return; + } fnid = list_entry(nm_i->free_nid_list.next, struct free_nid, list); *nid = fnid->nid; spin_unlock(&nm_i->free_nid_list_lock); - return 0; } /* @@ -197,8 +218,7 @@ static inline void copy_node_footer(struct page *dst, struct page *src) static inline void fill_node_footer_blkaddr(struct page *page, block_t blkaddr) { - struct f2fs_sb_info *sbi = F2FS_SB(page->mapping->host->i_sb); - struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); + struct f2fs_checkpoint *ckpt = F2FS_CKPT(F2FS_P_SB(page)); struct f2fs_node *rn = F2FS_NODE(page); rn->footer.cp_ver = ckpt->checkpoint_ver; diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c index fe1c6d921ba2..ebd013225788 100644 --- a/fs/f2fs/recovery.c +++ b/fs/f2fs/recovery.c @@ -14,6 +14,37 @@ #include "node.h" #include "segment.h" +/* + * Roll forward recovery scenarios. + * + * [Term] F: fsync_mark, D: dentry_mark + * + * 1. inode(x) | CP | inode(x) | dnode(F) + * -> Update the latest inode(x). + * + * 2. inode(x) | CP | inode(F) | dnode(F) + * -> No problem. + * + * 3. inode(x) | CP | dnode(F) | inode(x) + * -> Recover to the latest dnode(F), and drop the last inode(x) + * + * 4. inode(x) | CP | dnode(F) | inode(F) + * -> No problem. + * + * 5. CP | inode(x) | dnode(F) + * -> The inode(DF) was missing. Should drop this dnode(F). + * + * 6. CP | inode(DF) | dnode(F) + * -> No problem. + * + * 7. CP | dnode(F) | inode(DF) + * -> If f2fs_iget fails, then goto next to find inode(DF). + * + * 8. CP | dnode(F) | inode(x) + * -> If f2fs_iget fails, then goto next to find inode(DF). + * But it will fail due to no inode(DF). + */ + static struct kmem_cache *fsync_entry_slab; bool space_for_roll_forward(struct f2fs_sb_info *sbi) @@ -36,7 +67,7 @@ static struct fsync_inode_entry *get_fsync_inode(struct list_head *head, return NULL; } -static int recover_dentry(struct page *ipage, struct inode *inode) +static int recover_dentry(struct inode *inode, struct page *ipage) { struct f2fs_inode *raw_inode = F2FS_INODE(ipage); nid_t pino = le32_to_cpu(raw_inode->i_pino); @@ -62,8 +93,10 @@ static int recover_dentry(struct page *ipage, struct inode *inode) } retry: de = f2fs_find_entry(dir, &name, &page); - if (de && inode->i_ino == le32_to_cpu(de->ino)) + if (de && inode->i_ino == le32_to_cpu(de->ino)) { + clear_inode_flag(F2FS_I(inode), FI_INC_LINK); goto out_unmap_put; + } if (de) { einode = f2fs_iget(inode->i_sb, le32_to_cpu(de->ino)); if (IS_ERR(einode)) { @@ -73,7 +106,7 @@ retry: err = -EEXIST; goto out_unmap_put; } - err = acquire_orphan_inode(F2FS_SB(inode->i_sb)); + err = acquire_orphan_inode(F2FS_I_SB(inode)); if (err) { iput(einode); goto out_unmap_put; @@ -108,35 +141,28 @@ out: return err; } -static int recover_inode(struct inode *inode, struct page *node_page) +static void recover_inode(struct inode *inode, struct page *page) { - struct f2fs_inode *raw_inode = F2FS_INODE(node_page); + struct f2fs_inode *raw = F2FS_INODE(page); - if (!IS_INODE(node_page)) - return 0; - - inode->i_mode = le16_to_cpu(raw_inode->i_mode); - i_size_write(inode, le64_to_cpu(raw_inode->i_size)); - inode->i_atime.tv_sec = le64_to_cpu(raw_inode->i_mtime); - inode->i_ctime.tv_sec = le64_to_cpu(raw_inode->i_ctime); - inode->i_mtime.tv_sec = le64_to_cpu(raw_inode->i_mtime); - inode->i_atime.tv_nsec = le32_to_cpu(raw_inode->i_mtime_nsec); - inode->i_ctime.tv_nsec = le32_to_cpu(raw_inode->i_ctime_nsec); - inode->i_mtime.tv_nsec = le32_to_cpu(raw_inode->i_mtime_nsec); - - if (is_dent_dnode(node_page)) - return recover_dentry(node_page, inode); + inode->i_mode = le16_to_cpu(raw->i_mode); + i_size_write(inode, le64_to_cpu(raw->i_size)); + inode->i_atime.tv_sec = le64_to_cpu(raw->i_mtime); + inode->i_ctime.tv_sec = le64_to_cpu(raw->i_ctime); + inode->i_mtime.tv_sec = le64_to_cpu(raw->i_mtime); + inode->i_atime.tv_nsec = le32_to_cpu(raw->i_mtime_nsec); + inode->i_ctime.tv_nsec = le32_to_cpu(raw->i_ctime_nsec); + inode->i_mtime.tv_nsec = le32_to_cpu(raw->i_mtime_nsec); f2fs_msg(inode->i_sb, KERN_NOTICE, "recover_inode: ino = %x, name = %s", - ino_of_node(node_page), raw_inode->i_name); - return 0; + ino_of_node(page), F2FS_INODE(page)->i_name); } static int find_fsync_dnodes(struct f2fs_sb_info *sbi, struct list_head *head) { unsigned long long cp_ver = cur_cp_version(F2FS_CKPT(sbi)); struct curseg_info *curseg; - struct page *page; + struct page *page = NULL; block_t blkaddr; int err = 0; @@ -144,20 +170,13 @@ static int find_fsync_dnodes(struct f2fs_sb_info *sbi, struct list_head *head) curseg = CURSEG_I(sbi, CURSEG_WARM_NODE); blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); - /* read node page */ - page = alloc_page(GFP_F2FS_ZERO); - if (!page) - return -ENOMEM; - lock_page(page); - while (1) { struct fsync_inode_entry *entry; - err = f2fs_submit_page_bio(sbi, page, blkaddr, READ_SYNC); - if (err) - return err; + if (blkaddr < MAIN_BLKADDR(sbi) || blkaddr >= MAX_BLKADDR(sbi)) + return 0; - lock_page(page); + page = get_meta_page_ra(sbi, blkaddr); if (cp_ver != cpver_of_node(page)) break; @@ -178,33 +197,38 @@ static int find_fsync_dnodes(struct f2fs_sb_info *sbi, struct list_head *head) } /* add this fsync inode to the list */ - entry = kmem_cache_alloc(fsync_entry_slab, GFP_NOFS); + entry = kmem_cache_alloc(fsync_entry_slab, GFP_F2FS_ZERO); if (!entry) { err = -ENOMEM; break; } - + /* + * CP | dnode(F) | inode(DF) + * For this case, we should not give up now. + */ entry->inode = f2fs_iget(sbi->sb, ino_of_node(page)); if (IS_ERR(entry->inode)) { err = PTR_ERR(entry->inode); kmem_cache_free(fsync_entry_slab, entry); + if (err == -ENOENT) + goto next; break; } list_add_tail(&entry->list, head); } entry->blkaddr = blkaddr; - err = recover_inode(entry->inode, page); - if (err && err != -ENOENT) - break; + if (IS_INODE(page)) { + entry->last_inode = blkaddr; + if (is_dent_dnode(page)) + entry->last_dentry = blkaddr; + } next: /* check next segment */ blkaddr = next_blkaddr_of_node(page); + f2fs_put_page(page, 1); } - - unlock_page(page); - __free_pages(page, 0); - + f2fs_put_page(page, 1); return err; } @@ -277,16 +301,30 @@ got_it: ino = ino_of_node(node_page); f2fs_put_page(node_page, 1); - /* Deallocate previous index in the node page */ - inode = f2fs_iget(sbi->sb, ino); - if (IS_ERR(inode)) - return PTR_ERR(inode); + if (ino != dn->inode->i_ino) { + /* Deallocate previous index in the node page */ + inode = f2fs_iget(sbi->sb, ino); + if (IS_ERR(inode)) + return PTR_ERR(inode); + } else { + inode = dn->inode; + } bidx = start_bidx_of_node(offset, F2FS_I(inode)) + - le16_to_cpu(sum.ofs_in_node); + le16_to_cpu(sum.ofs_in_node); - truncate_hole(inode, bidx, bidx + 1); - iput(inode); + if (ino != dn->inode->i_ino) { + truncate_hole(inode, bidx, bidx + 1); + iput(inode); + } else { + struct dnode_of_data tdn; + set_new_dnode(&tdn, inode, dn->inode_page, NULL, 0); + if (get_dnode_of_data(&tdn, bidx, LOOKUP_NODE)) + return 0; + if (tdn.data_blkaddr != NULL_ADDR) + truncate_data_blocks_range(&tdn, 1); + f2fs_put_page(tdn.node_page, 1); + } return 0; } @@ -300,14 +338,19 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode, struct node_info ni; int err = 0, recovered = 0; - recover_inline_xattr(inode, page); - - if (recover_inline_data(inode, page)) + /* step 1: recover xattr */ + if (IS_INODE(page)) { + recover_inline_xattr(inode, page); + } else if (f2fs_has_xattr_block(ofs_of_node(page))) { + recover_xattr_data(inode, page, blkaddr); goto out; + } - if (recover_xattr_data(inode, page, blkaddr)) + /* step 2: recover inline data */ + if (recover_inline_data(inode, page)) goto out; + /* step 3: recover data indices */ start = start_bidx_of_node(ofs_of_node(page), fi); end = start + ADDRS_PER_PAGE(page, fi); @@ -324,8 +367,8 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode, f2fs_wait_on_page_writeback(dn.node_page, NODE); get_node_info(sbi, dn.nid, &ni); - f2fs_bug_on(ni.ino != ino_of_node(page)); - f2fs_bug_on(ofs_of_node(dn.node_page) != ofs_of_node(page)); + f2fs_bug_on(sbi, ni.ino != ino_of_node(page)); + f2fs_bug_on(sbi, ofs_of_node(dn.node_page) != ofs_of_node(page)); for (; start < end; start++) { block_t src, dest; @@ -337,7 +380,7 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode, if (src == NULL_ADDR) { err = reserve_new_block(&dn); /* We should not get -ENOSPC */ - f2fs_bug_on(err); + f2fs_bug_on(sbi, err); } /* Check the previous node page having this index */ @@ -364,8 +407,6 @@ static int do_recover_data(struct f2fs_sb_info *sbi, struct inode *inode, fill_node_footer(dn.node_page, dn.nid, ni.ino, ofs_of_node(page), false); set_page_dirty(dn.node_page); - - recover_node_page(sbi, dn.node_page, &sum, &ni, blkaddr); err: f2fs_put_dnode(&dn); f2fs_unlock_op(sbi); @@ -381,7 +422,7 @@ static int recover_data(struct f2fs_sb_info *sbi, { unsigned long long cp_ver = cur_cp_version(F2FS_CKPT(sbi)); struct curseg_info *curseg; - struct page *page; + struct page *page = NULL; int err = 0; block_t blkaddr; @@ -389,32 +430,41 @@ static int recover_data(struct f2fs_sb_info *sbi, curseg = CURSEG_I(sbi, type); blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); - /* read node page */ - page = alloc_page(GFP_F2FS_ZERO); - if (!page) - return -ENOMEM; - - lock_page(page); - while (1) { struct fsync_inode_entry *entry; - err = f2fs_submit_page_bio(sbi, page, blkaddr, READ_SYNC); - if (err) - return err; + if (blkaddr < MAIN_BLKADDR(sbi) || blkaddr >= MAX_BLKADDR(sbi)) + break; - lock_page(page); + page = get_meta_page_ra(sbi, blkaddr); - if (cp_ver != cpver_of_node(page)) + if (cp_ver != cpver_of_node(page)) { + f2fs_put_page(page, 1); break; + } entry = get_fsync_inode(head, ino_of_node(page)); if (!entry) goto next; - + /* + * inode(x) | CP | inode(x) | dnode(F) + * In this case, we can lose the latest inode(x). + * So, call recover_inode for the inode update. + */ + if (entry->last_inode == blkaddr) + recover_inode(entry->inode, page); + if (entry->last_dentry == blkaddr) { + err = recover_dentry(entry->inode, page); + if (err) { + f2fs_put_page(page, 1); + break; + } + } err = do_recover_data(sbi, entry->inode, page, blkaddr); - if (err) + if (err) { + f2fs_put_page(page, 1); break; + } if (entry->blkaddr == blkaddr) { iput(entry->inode); @@ -424,11 +474,8 @@ static int recover_data(struct f2fs_sb_info *sbi, next: /* check next segment */ blkaddr = next_blkaddr_of_node(page); + f2fs_put_page(page, 1); } - - unlock_page(page); - __free_pages(page, 0); - if (!err) allocate_new_segments(sbi); return err; @@ -452,6 +499,9 @@ int recover_fsync_data(struct f2fs_sb_info *sbi) /* step #1: find fsynced inode numbers */ sbi->por_doing = true; + /* prevent checkpoint */ + mutex_lock(&sbi->cp_mutex); + blkaddr = NEXT_FREE_BLKADDR(sbi, curseg); err = find_fsync_dnodes(sbi, &inode_list); @@ -465,11 +515,16 @@ int recover_fsync_data(struct f2fs_sb_info *sbi) /* step #2: recover data */ err = recover_data(sbi, &inode_list, CURSEG_WARM_NODE); - f2fs_bug_on(!list_empty(&inode_list)); + if (!err) + f2fs_bug_on(sbi, !list_empty(&inode_list)); out: destroy_fsync_dnodes(&inode_list); kmem_cache_destroy(fsync_entry_slab); + /* truncate meta pages to be used by the recovery */ + truncate_inode_pages_range(META_MAPPING(sbi), + MAIN_BLKADDR(sbi) << PAGE_CACHE_SHIFT, -1); + if (err) { truncate_inode_pages_final(NODE_MAPPING(sbi)); truncate_inode_pages_final(META_MAPPING(sbi)); @@ -482,8 +537,16 @@ out: /* Flush all the NAT/SIT pages */ while (get_pages(sbi, F2FS_DIRTY_META)) sync_meta_pages(sbi, META, LONG_MAX); + set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); + mutex_unlock(&sbi->cp_mutex); } else if (need_writecp) { - write_checkpoint(sbi, false); + struct cp_control cpc = { + .reason = CP_SYNC, + }; + mutex_unlock(&sbi->cp_mutex); + write_checkpoint(sbi, &cpc); + } else { + mutex_unlock(&sbi->cp_mutex); } return err; } diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index 0dfeebae2a50..923cb76fdc46 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -25,6 +25,8 @@ #define __reverse_ffz(x) __reverse_ffs(~(x)) static struct kmem_cache *discard_entry_slab; +static struct kmem_cache *sit_entry_set_slab; +static struct kmem_cache *inmem_entry_slab; /* * __reverse_ffs is copied from include/asm-generic/bitops/__ffs.h since @@ -62,7 +64,7 @@ static inline unsigned long __reverse_ffs(unsigned long word) } /* - * __find_rev_next(_zero)_bit is copied from lib/find_next_bit.c becasue + * __find_rev_next(_zero)_bit is copied from lib/find_next_bit.c because * f2fs_set_bit makes MSB and LSB reversed in a byte. * Example: * LSB <--> MSB @@ -172,6 +174,60 @@ found_middle: return result + __reverse_ffz(tmp); } +void register_inmem_page(struct inode *inode, struct page *page) +{ + struct f2fs_inode_info *fi = F2FS_I(inode); + struct inmem_pages *new; + + new = f2fs_kmem_cache_alloc(inmem_entry_slab, GFP_NOFS); + + /* add atomic page indices to the list */ + new->page = page; + INIT_LIST_HEAD(&new->list); + + /* increase reference count with clean state */ + mutex_lock(&fi->inmem_lock); + get_page(page); + list_add_tail(&new->list, &fi->inmem_pages); + mutex_unlock(&fi->inmem_lock); +} + +void commit_inmem_pages(struct inode *inode, bool abort) +{ + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + struct f2fs_inode_info *fi = F2FS_I(inode); + struct inmem_pages *cur, *tmp; + bool submit_bio = false; + struct f2fs_io_info fio = { + .type = DATA, + .rw = WRITE_SYNC, + }; + + f2fs_balance_fs(sbi); + f2fs_lock_op(sbi); + + mutex_lock(&fi->inmem_lock); + list_for_each_entry_safe(cur, tmp, &fi->inmem_pages, list) { + lock_page(cur->page); + if (!abort && cur->page->mapping == inode->i_mapping) { + f2fs_wait_on_page_writeback(cur->page, DATA); + if (clear_page_dirty_for_io(cur->page)) + inode_dec_dirty_pages(inode); + do_write_data_page(cur->page, &fio); + submit_bio = true; + } + f2fs_put_page(cur->page, 1); + list_del(&cur->list); + kmem_cache_free(inmem_entry_slab, cur); + } + if (submit_bio) + f2fs_submit_merged_bio(sbi, DATA, WRITE); + mutex_unlock(&fi->inmem_lock); + + filemap_fdatawait_range(inode->i_mapping, 0, LLONG_MAX); + f2fs_unlock_op(sbi); +} + /* * This function balances dirty node and dentry pages. * In addition, it controls garbage collection. @@ -205,24 +261,20 @@ repeat: if (kthread_should_stop()) return 0; - spin_lock(&fcc->issue_lock); - if (fcc->issue_list) { - fcc->dispatch_list = fcc->issue_list; - fcc->issue_list = fcc->issue_tail = NULL; - } - spin_unlock(&fcc->issue_lock); - - if (fcc->dispatch_list) { + if (!llist_empty(&fcc->issue_list)) { struct bio *bio = bio_alloc(GFP_NOIO, 0); struct flush_cmd *cmd, *next; int ret; + fcc->dispatch_list = llist_del_all(&fcc->issue_list); + fcc->dispatch_list = llist_reverse_order(fcc->dispatch_list); + bio->bi_bdev = sbi->sb->s_bdev; ret = submit_bio_wait(WRITE_FLUSH, bio); - for (cmd = fcc->dispatch_list; cmd; cmd = next) { + llist_for_each_entry_safe(cmd, next, + fcc->dispatch_list, llnode) { cmd->ret = ret; - next = cmd->next; complete(&cmd->wait); } bio_put(bio); @@ -230,7 +282,7 @@ repeat: } wait_event_interruptible(*q, - kthread_should_stop() || fcc->issue_list); + kthread_should_stop() || !llist_empty(&fcc->issue_list)); goto repeat; } @@ -249,15 +301,8 @@ int f2fs_issue_flush(struct f2fs_sb_info *sbi) return blkdev_issue_flush(sbi->sb->s_bdev, GFP_KERNEL, NULL); init_completion(&cmd.wait); - cmd.next = NULL; - spin_lock(&fcc->issue_lock); - if (fcc->issue_list) - fcc->issue_tail->next = &cmd; - else - fcc->issue_list = &cmd; - fcc->issue_tail = &cmd; - spin_unlock(&fcc->issue_lock); + llist_add(&cmd.llnode, &fcc->issue_list); if (!fcc->dispatch_list) wake_up(&fcc->flush_wait_queue); @@ -276,8 +321,8 @@ int create_flush_cmd_control(struct f2fs_sb_info *sbi) fcc = kzalloc(sizeof(struct flush_cmd_control), GFP_KERNEL); if (!fcc) return -ENOMEM; - spin_lock_init(&fcc->issue_lock); init_waitqueue_head(&fcc->flush_wait_queue); + init_llist_head(&fcc->issue_list); SM_I(sbi)->cmd_control_info = fcc; fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi, "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev)); @@ -317,6 +362,10 @@ static void __locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno, struct seg_entry *sentry = get_seg_entry(sbi, segno); enum dirty_type t = sentry->type; + if (unlikely(t >= DIRTY)) { + f2fs_bug_on(sbi, 1); + return; + } if (!test_and_set_bit(segno, dirty_i->dirty_segmap[t])) dirty_i->nr_dirty[t]++; } @@ -376,8 +425,8 @@ static void locate_dirty_segment(struct f2fs_sb_info *sbi, unsigned int segno) static int f2fs_issue_discard(struct f2fs_sb_info *sbi, block_t blkstart, block_t blklen) { - sector_t start = SECTOR_FROM_BLOCK(sbi, blkstart); - sector_t len = SECTOR_FROM_BLOCK(sbi, blklen); + sector_t start = SECTOR_FROM_BLOCK(blkstart); + sector_t len = SECTOR_FROM_BLOCK(blklen); trace_f2fs_issue_discard(sbi->sb, blkstart, blklen); return blkdev_issue_discard(sbi->sb->s_bdev, start, len, GFP_NOFS, 0); } @@ -392,21 +441,47 @@ void discard_next_dnode(struct f2fs_sb_info *sbi, block_t blkaddr) } } -static void add_discard_addrs(struct f2fs_sb_info *sbi, - unsigned int segno, struct seg_entry *se) +static void add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc) { struct list_head *head = &SM_I(sbi)->discard_list; struct discard_entry *new; int entries = SIT_VBLOCK_MAP_SIZE / sizeof(unsigned long); int max_blocks = sbi->blocks_per_seg; + struct seg_entry *se = get_seg_entry(sbi, cpc->trim_start); unsigned long *cur_map = (unsigned long *)se->cur_valid_map; unsigned long *ckpt_map = (unsigned long *)se->ckpt_valid_map; unsigned long dmap[entries]; unsigned int start = 0, end = -1; + bool force = (cpc->reason == CP_DISCARD); int i; - if (!test_opt(sbi, DISCARD)) + if (!force && !test_opt(sbi, DISCARD)) + return; + + if (force && !se->valid_blocks) { + struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); + /* + * if this segment is registered in the prefree list, then + * we should skip adding a discard candidate, and let the + * checkpoint do that later. + */ + mutex_lock(&dirty_i->seglist_lock); + if (test_bit(cpc->trim_start, dirty_i->dirty_segmap[PRE])) { + mutex_unlock(&dirty_i->seglist_lock); + cpc->trimmed += sbi->blocks_per_seg; + return; + } + mutex_unlock(&dirty_i->seglist_lock); + + new = f2fs_kmem_cache_alloc(discard_entry_slab, GFP_NOFS); + INIT_LIST_HEAD(&new->list); + new->blkaddr = START_BLOCK(sbi, cpc->trim_start); + new->len = sbi->blocks_per_seg; + list_add_tail(&new->list, head); + SM_I(sbi)->nr_discards += sbi->blocks_per_seg; + cpc->trimmed += sbi->blocks_per_seg; return; + } /* zero block will be discarded through the prefree list */ if (!se->valid_blocks || se->valid_blocks == max_blocks) @@ -416,23 +491,39 @@ static void add_discard_addrs(struct f2fs_sb_info *sbi, for (i = 0; i < entries; i++) dmap[i] = (cur_map[i] ^ ckpt_map[i]) & ckpt_map[i]; - while (SM_I(sbi)->nr_discards <= SM_I(sbi)->max_discards) { + while (force || SM_I(sbi)->nr_discards <= SM_I(sbi)->max_discards) { start = __find_rev_next_bit(dmap, max_blocks, end + 1); if (start >= max_blocks) break; end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1); + if (end - start < cpc->trim_minlen) + continue; + new = f2fs_kmem_cache_alloc(discard_entry_slab, GFP_NOFS); INIT_LIST_HEAD(&new->list); - new->blkaddr = START_BLOCK(sbi, segno) + start; + new->blkaddr = START_BLOCK(sbi, cpc->trim_start) + start; new->len = end - start; + cpc->trimmed += end - start; list_add_tail(&new->list, head); SM_I(sbi)->nr_discards += end - start; } } +void release_discard_addrs(struct f2fs_sb_info *sbi) +{ + struct list_head *head = &(SM_I(sbi)->discard_list); + struct discard_entry *entry, *this; + + /* drop caches */ + list_for_each_entry_safe(entry, this, head, list) { + list_del(&entry->list); + kmem_cache_free(discard_entry_slab, entry); + } +} + /* * Should call clear_prefree_segments after checkpoint is done. */ @@ -440,10 +531,9 @@ static void set_prefree_as_free_segments(struct f2fs_sb_info *sbi) { struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); unsigned int segno; - unsigned int total_segs = TOTAL_SEGS(sbi); mutex_lock(&dirty_i->seglist_lock); - for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], total_segs) + for_each_set_bit(segno, dirty_i->dirty_segmap[PRE], MAIN_SEGS(sbi)) __set_test_and_free(sbi, segno); mutex_unlock(&dirty_i->seglist_lock); } @@ -454,17 +544,17 @@ void clear_prefree_segments(struct f2fs_sb_info *sbi) struct discard_entry *entry, *this; struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); unsigned long *prefree_map = dirty_i->dirty_segmap[PRE]; - unsigned int total_segs = TOTAL_SEGS(sbi); unsigned int start = 0, end = -1; mutex_lock(&dirty_i->seglist_lock); while (1) { int i; - start = find_next_bit(prefree_map, total_segs, end + 1); - if (start >= total_segs) + start = find_next_bit(prefree_map, MAIN_SEGS(sbi), end + 1); + if (start >= MAIN_SEGS(sbi)) break; - end = find_next_zero_bit(prefree_map, total_segs, start + 1); + end = find_next_zero_bit(prefree_map, MAIN_SEGS(sbi), + start + 1); for (i = start; i < end; i++) clear_bit(i, prefree_map); @@ -488,11 +578,16 @@ void clear_prefree_segments(struct f2fs_sb_info *sbi) } } -static void __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno) +static bool __mark_sit_entry_dirty(struct f2fs_sb_info *sbi, unsigned int segno) { struct sit_info *sit_i = SIT_I(sbi); - if (!__test_and_set_bit(segno, sit_i->dirty_sentries_bitmap)) + + if (!__test_and_set_bit(segno, sit_i->dirty_sentries_bitmap)) { sit_i->dirty_sentries++; + return false; + } + + return true; } static void __set_sit_entry_type(struct f2fs_sb_info *sbi, int type, @@ -516,7 +611,7 @@ static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del) new_vblocks = se->valid_blocks + del; offset = GET_BLKOFF_FROM_SEG0(sbi, blkaddr); - f2fs_bug_on((new_vblocks >> (sizeof(unsigned short) << 3) || + f2fs_bug_on(sbi, (new_vblocks >> (sizeof(unsigned short) << 3) || (new_vblocks > sbi->blocks_per_seg))); se->valid_blocks = new_vblocks; @@ -526,10 +621,10 @@ static void update_sit_entry(struct f2fs_sb_info *sbi, block_t blkaddr, int del) /* Update valid block bitmap */ if (del > 0) { if (f2fs_set_bit(offset, se->cur_valid_map)) - BUG(); + f2fs_bug_on(sbi, 1); } else { if (!f2fs_clear_bit(offset, se->cur_valid_map)) - BUG(); + f2fs_bug_on(sbi, 1); } if (!f2fs_test_bit(offset, se->ckpt_valid_map)) se->ckpt_valid_blocks += del; @@ -558,7 +653,7 @@ void invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr) unsigned int segno = GET_SEGNO(sbi, addr); struct sit_info *sit_i = SIT_I(sbi); - f2fs_bug_on(addr == NULL_ADDR); + f2fs_bug_on(sbi, addr == NULL_ADDR); if (addr == NEW_ADDR) return; @@ -634,7 +729,7 @@ static int is_next_segment_free(struct f2fs_sb_info *sbi, int type) unsigned int segno = curseg->segno + 1; struct free_segmap_info *free_i = FREE_I(sbi); - if (segno < TOTAL_SEGS(sbi) && segno % sbi->segs_per_sec) + if (segno < MAIN_SEGS(sbi) && segno % sbi->segs_per_sec) return !test_bit(segno, free_i->free_segmap); return 0; } @@ -648,7 +743,7 @@ static void get_new_segment(struct f2fs_sb_info *sbi, { struct free_segmap_info *free_i = FREE_I(sbi); unsigned int segno, secno, zoneno; - unsigned int total_zones = TOTAL_SECS(sbi) / sbi->secs_per_zone; + unsigned int total_zones = MAIN_SECS(sbi) / sbi->secs_per_zone; unsigned int hint = *newseg / sbi->segs_per_sec; unsigned int old_zoneno = GET_ZONENO_FROM_SEGNO(sbi, *newseg); unsigned int left_start = hint; @@ -660,18 +755,18 @@ static void get_new_segment(struct f2fs_sb_info *sbi, if (!new_sec && ((*newseg + 1) % sbi->segs_per_sec)) { segno = find_next_zero_bit(free_i->free_segmap, - TOTAL_SEGS(sbi), *newseg + 1); + MAIN_SEGS(sbi), *newseg + 1); if (segno - *newseg < sbi->segs_per_sec - (*newseg % sbi->segs_per_sec)) goto got_it; } find_other_zone: - secno = find_next_zero_bit(free_i->free_secmap, TOTAL_SECS(sbi), hint); - if (secno >= TOTAL_SECS(sbi)) { + secno = find_next_zero_bit(free_i->free_secmap, MAIN_SECS(sbi), hint); + if (secno >= MAIN_SECS(sbi)) { if (dir == ALLOC_RIGHT) { secno = find_next_zero_bit(free_i->free_secmap, - TOTAL_SECS(sbi), 0); - f2fs_bug_on(secno >= TOTAL_SECS(sbi)); + MAIN_SECS(sbi), 0); + f2fs_bug_on(sbi, secno >= MAIN_SECS(sbi)); } else { go_left = 1; left_start = hint - 1; @@ -686,8 +781,8 @@ find_other_zone: continue; } left_start = find_next_zero_bit(free_i->free_secmap, - TOTAL_SECS(sbi), 0); - f2fs_bug_on(left_start >= TOTAL_SECS(sbi)); + MAIN_SECS(sbi), 0); + f2fs_bug_on(sbi, left_start >= MAIN_SECS(sbi)); break; } secno = left_start; @@ -726,7 +821,7 @@ skip_left: } got_it: /* set it as dirty segment in free segmap */ - f2fs_bug_on(test_bit(segno, free_i->free_segmap)); + f2fs_bug_on(sbi, test_bit(segno, free_i->free_segmap)); __set_inuse(sbi, segno); *newseg = segno; write_unlock(&free_i->segmap_lock); @@ -808,7 +903,7 @@ static void __refresh_next_blkoff(struct f2fs_sb_info *sbi, } /* - * This function always allocates a used segment (from dirty seglist) by SSR + * This function always allocates a used segment(from dirty seglist) by SSR * manner, so it should recover the existing segment information of valid blocks */ static void change_curseg(struct f2fs_sb_info *sbi, int type, bool reuse) @@ -898,6 +993,37 @@ static const struct segment_allocation default_salloc_ops = { .allocate_segment = allocate_segment_by_default, }; +int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range) +{ + __u64 start = range->start >> sbi->log_blocksize; + __u64 end = start + (range->len >> sbi->log_blocksize) - 1; + unsigned int start_segno, end_segno; + struct cp_control cpc; + + if (range->minlen > SEGMENT_SIZE(sbi) || start >= MAX_BLKADDR(sbi) || + range->len < sbi->blocksize) + return -EINVAL; + + if (end <= MAIN_BLKADDR(sbi)) + goto out; + + /* start/end segment number in main_area */ + start_segno = (start <= MAIN_BLKADDR(sbi)) ? 0 : GET_SEGNO(sbi, start); + end_segno = (end >= MAX_BLKADDR(sbi)) ? MAIN_SEGS(sbi) - 1 : + GET_SEGNO(sbi, end); + cpc.reason = CP_DISCARD; + cpc.trim_start = start_segno; + cpc.trim_end = end_segno; + cpc.trim_minlen = range->minlen >> sbi->log_blocksize; + cpc.trimmed = 0; + + /* do checkpoint to issue discard commands safely */ + write_checkpoint(sbi, &cpc); +out: + range->len = cpc.trimmed << sbi->log_blocksize; + return 0; +} + static bool __has_curseg_space(struct f2fs_sb_info *sbi, int type) { struct curseg_info *curseg = CURSEG_I(sbi, type); @@ -953,15 +1079,15 @@ static int __get_segment_type_6(struct page *page, enum page_type p_type) static int __get_segment_type(struct page *page, enum page_type p_type) { - struct f2fs_sb_info *sbi = F2FS_SB(page->mapping->host->i_sb); - switch (sbi->active_logs) { + switch (F2FS_P_SB(page)->active_logs) { case 2: return __get_segment_type_2(page, p_type); case 4: return __get_segment_type_4(page, p_type); } /* NR_CURSEG_TYPE(6) logs by default */ - f2fs_bug_on(sbi->active_logs != NR_CURSEG_TYPE); + f2fs_bug_on(F2FS_P_SB(page), + F2FS_P_SB(page)->active_logs != NR_CURSEG_TYPE); return __get_segment_type_6(page, p_type); } @@ -1041,11 +1167,11 @@ void write_node_page(struct f2fs_sb_info *sbi, struct page *page, void write_data_page(struct page *page, struct dnode_of_data *dn, block_t *new_blkaddr, struct f2fs_io_info *fio) { - struct f2fs_sb_info *sbi = F2FS_SB(dn->inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(dn->inode); struct f2fs_summary sum; struct node_info ni; - f2fs_bug_on(dn->data_blkaddr == NULL_ADDR); + f2fs_bug_on(sbi, dn->data_blkaddr == NULL_ADDR); get_node_info(sbi, dn->nid, &ni); set_summary(&sum, dn->nid, dn->ofs_in_node, ni.version); @@ -1055,9 +1181,7 @@ void write_data_page(struct page *page, struct dnode_of_data *dn, void rewrite_data_page(struct page *page, block_t old_blkaddr, struct f2fs_io_info *fio) { - struct inode *inode = page->mapping->host; - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); - f2fs_submit_page_mbio(sbi, page, old_blkaddr, fio); + f2fs_submit_page_mbio(F2FS_P_SB(page), page, old_blkaddr, fio); } void recover_data_page(struct f2fs_sb_info *sbi, @@ -1103,55 +1227,6 @@ void recover_data_page(struct f2fs_sb_info *sbi, mutex_unlock(&curseg->curseg_mutex); } -void rewrite_node_page(struct f2fs_sb_info *sbi, - struct page *page, struct f2fs_summary *sum, - block_t old_blkaddr, block_t new_blkaddr) -{ - struct sit_info *sit_i = SIT_I(sbi); - int type = CURSEG_WARM_NODE; - struct curseg_info *curseg; - unsigned int segno, old_cursegno; - block_t next_blkaddr = next_blkaddr_of_node(page); - unsigned int next_segno = GET_SEGNO(sbi, next_blkaddr); - struct f2fs_io_info fio = { - .type = NODE, - .rw = WRITE_SYNC, - }; - - curseg = CURSEG_I(sbi, type); - - mutex_lock(&curseg->curseg_mutex); - mutex_lock(&sit_i->sentry_lock); - - segno = GET_SEGNO(sbi, new_blkaddr); - old_cursegno = curseg->segno; - - /* change the current segment */ - if (segno != curseg->segno) { - curseg->next_segno = segno; - change_curseg(sbi, type, true); - } - curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, new_blkaddr); - __add_sum_entry(sbi, type, sum); - - /* change the current log to the next block addr in advance */ - if (next_segno != segno) { - curseg->next_segno = next_segno; - change_curseg(sbi, type, true); - } - curseg->next_blkoff = GET_BLKOFF_FROM_SEG0(sbi, next_blkaddr); - - /* rewrite node page */ - set_page_writeback(page); - f2fs_submit_page_mbio(sbi, page, new_blkaddr, &fio); - f2fs_submit_merged_bio(sbi, NODE, WRITE); - refresh_sit_entry(sbi, old_blkaddr, new_blkaddr); - locate_dirty_segment(sbi, old_cursegno); - - mutex_unlock(&sit_i->sentry_lock); - mutex_unlock(&curseg->curseg_mutex); -} - static inline bool is_merged_page(struct f2fs_sb_info *sbi, struct page *page, enum page_type type) { @@ -1179,8 +1254,9 @@ out: void f2fs_wait_on_page_writeback(struct page *page, enum page_type type) { - struct f2fs_sb_info *sbi = F2FS_SB(page->mapping->host->i_sb); if (PageWriteback(page)) { + struct f2fs_sb_info *sbi = F2FS_P_SB(page); + if (is_merged_page(sbi, page, type)) f2fs_submit_merged_bio(sbi, type, WRITE); wait_on_page_writeback(page); @@ -1449,7 +1525,7 @@ static struct page *get_current_sit_page(struct f2fs_sb_info *sbi, unsigned int segno) { struct sit_info *sit_i = SIT_I(sbi); - unsigned int offset = SIT_BLOCK_OFFSET(sit_i, segno); + unsigned int offset = SIT_BLOCK_OFFSET(segno); block_t blk_addr = sit_i->sit_base_addr + offset; check_seg_range(sbi, segno); @@ -1475,7 +1551,7 @@ static struct page *get_next_sit_page(struct f2fs_sb_info *sbi, /* get current sit block page without lock */ src_page = get_meta_page(sbi, src_off); dst_page = grab_meta_page(sbi, dst_off); - f2fs_bug_on(PageDirty(src_page)); + f2fs_bug_on(sbi, PageDirty(src_page)); src_addr = page_address(src_page); dst_addr = page_address(dst_page); @@ -1489,101 +1565,192 @@ static struct page *get_next_sit_page(struct f2fs_sb_info *sbi, return dst_page; } -static bool flush_sits_in_journal(struct f2fs_sb_info *sbi) +static struct sit_entry_set *grab_sit_entry_set(void) +{ + struct sit_entry_set *ses = + f2fs_kmem_cache_alloc(sit_entry_set_slab, GFP_ATOMIC); + + ses->entry_cnt = 0; + INIT_LIST_HEAD(&ses->set_list); + return ses; +} + +static void release_sit_entry_set(struct sit_entry_set *ses) +{ + list_del(&ses->set_list); + kmem_cache_free(sit_entry_set_slab, ses); +} + +static void adjust_sit_entry_set(struct sit_entry_set *ses, + struct list_head *head) +{ + struct sit_entry_set *next = ses; + + if (list_is_last(&ses->set_list, head)) + return; + + list_for_each_entry_continue(next, head, set_list) + if (ses->entry_cnt <= next->entry_cnt) + break; + + list_move_tail(&ses->set_list, &next->set_list); +} + +static void add_sit_entry(unsigned int segno, struct list_head *head) +{ + struct sit_entry_set *ses; + unsigned int start_segno = START_SEGNO(segno); + + list_for_each_entry(ses, head, set_list) { + if (ses->start_segno == start_segno) { + ses->entry_cnt++; + adjust_sit_entry_set(ses, head); + return; + } + } + + ses = grab_sit_entry_set(); + + ses->start_segno = start_segno; + ses->entry_cnt++; + list_add(&ses->set_list, head); +} + +static void add_sits_in_set(struct f2fs_sb_info *sbi) +{ + struct f2fs_sm_info *sm_info = SM_I(sbi); + struct list_head *set_list = &sm_info->sit_entry_set; + unsigned long *bitmap = SIT_I(sbi)->dirty_sentries_bitmap; + unsigned int segno; + + for_each_set_bit(segno, bitmap, MAIN_SEGS(sbi)) + add_sit_entry(segno, set_list); +} + +static void remove_sits_in_journal(struct f2fs_sb_info *sbi) { struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); struct f2fs_summary_block *sum = curseg->sum_blk; int i; - /* - * If the journal area in the current summary is full of sit entries, - * all the sit entries will be flushed. Otherwise the sit entries - * are not able to replace with newly hot sit entries. - */ - if (sits_in_cursum(sum) >= SIT_JOURNAL_ENTRIES) { - for (i = sits_in_cursum(sum) - 1; i >= 0; i--) { - unsigned int segno; - segno = le32_to_cpu(segno_in_journal(sum, i)); - __mark_sit_entry_dirty(sbi, segno); - } - update_sits_in_cursum(sum, -sits_in_cursum(sum)); - return true; + for (i = sits_in_cursum(sum) - 1; i >= 0; i--) { + unsigned int segno; + bool dirtied; + + segno = le32_to_cpu(segno_in_journal(sum, i)); + dirtied = __mark_sit_entry_dirty(sbi, segno); + + if (!dirtied) + add_sit_entry(segno, &SM_I(sbi)->sit_entry_set); } - return false; + update_sits_in_cursum(sum, -sits_in_cursum(sum)); } /* * CP calls this function, which flushes SIT entries including sit_journal, * and moves prefree segs to free segs. */ -void flush_sit_entries(struct f2fs_sb_info *sbi) +void flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc) { struct sit_info *sit_i = SIT_I(sbi); unsigned long *bitmap = sit_i->dirty_sentries_bitmap; struct curseg_info *curseg = CURSEG_I(sbi, CURSEG_COLD_DATA); struct f2fs_summary_block *sum = curseg->sum_blk; - unsigned long nsegs = TOTAL_SEGS(sbi); - struct page *page = NULL; - struct f2fs_sit_block *raw_sit = NULL; - unsigned int start = 0, end = 0; - unsigned int segno; - bool flushed; + struct sit_entry_set *ses, *tmp; + struct list_head *head = &SM_I(sbi)->sit_entry_set; + bool to_journal = true; + struct seg_entry *se; mutex_lock(&curseg->curseg_mutex); mutex_lock(&sit_i->sentry_lock); /* - * "flushed" indicates whether sit entries in journal are flushed - * to the SIT area or not. + * add and account sit entries of dirty bitmap in sit entry + * set temporarily */ - flushed = flush_sits_in_journal(sbi); + add_sits_in_set(sbi); - for_each_set_bit(segno, bitmap, nsegs) { - struct seg_entry *se = get_seg_entry(sbi, segno); - int sit_offset, offset; + /* + * if there are no enough space in journal to store dirty sit + * entries, remove all entries from journal and add and account + * them in sit entry set. + */ + if (!__has_cursum_space(sum, sit_i->dirty_sentries, SIT_JOURNAL)) + remove_sits_in_journal(sbi); - sit_offset = SIT_ENTRY_OFFSET(sit_i, segno); + if (!sit_i->dirty_sentries) + goto out; - /* add discard candidates */ - if (SM_I(sbi)->nr_discards < SM_I(sbi)->max_discards) - add_discard_addrs(sbi, segno, se); + /* + * there are two steps to flush sit entries: + * #1, flush sit entries to journal in current cold data summary block. + * #2, flush sit entries to sit page. + */ + list_for_each_entry_safe(ses, tmp, head, set_list) { + struct page *page; + struct f2fs_sit_block *raw_sit = NULL; + unsigned int start_segno = ses->start_segno; + unsigned int end = min(start_segno + SIT_ENTRY_PER_BLOCK, + (unsigned long)MAIN_SEGS(sbi)); + unsigned int segno = start_segno; + + if (to_journal && + !__has_cursum_space(sum, ses->entry_cnt, SIT_JOURNAL)) + to_journal = false; + + if (!to_journal) { + page = get_next_sit_page(sbi, start_segno); + raw_sit = page_address(page); + } - if (flushed) - goto to_sit_page; + /* flush dirty sit entries in region of current sit set */ + for_each_set_bit_from(segno, bitmap, end) { + int offset, sit_offset; - offset = lookup_journal_in_cursum(sum, SIT_JOURNAL, segno, 1); - if (offset >= 0) { - segno_in_journal(sum, offset) = cpu_to_le32(segno); - seg_info_to_raw_sit(se, &sit_in_journal(sum, offset)); - goto flush_done; - } -to_sit_page: - if (!page || (start > segno) || (segno > end)) { - if (page) { - f2fs_put_page(page, 1); - page = NULL; + se = get_seg_entry(sbi, segno); + + /* add discard candidates */ + if (SM_I(sbi)->nr_discards < SM_I(sbi)->max_discards) { + cpc->trim_start = segno; + add_discard_addrs(sbi, cpc); } - start = START_SEGNO(sit_i, segno); - end = start + SIT_ENTRY_PER_BLOCK - 1; + if (to_journal) { + offset = lookup_journal_in_cursum(sum, + SIT_JOURNAL, segno, 1); + f2fs_bug_on(sbi, offset < 0); + segno_in_journal(sum, offset) = + cpu_to_le32(segno); + seg_info_to_raw_sit(se, + &sit_in_journal(sum, offset)); + } else { + sit_offset = SIT_ENTRY_OFFSET(sit_i, segno); + seg_info_to_raw_sit(se, + &raw_sit->entries[sit_offset]); + } - /* read sit block that will be updated */ - page = get_next_sit_page(sbi, start); - raw_sit = page_address(page); + __clear_bit(segno, bitmap); + sit_i->dirty_sentries--; + ses->entry_cnt--; } - /* udpate entry in SIT block */ - seg_info_to_raw_sit(se, &raw_sit->entries[sit_offset]); -flush_done: - __clear_bit(segno, bitmap); - sit_i->dirty_sentries--; + if (!to_journal) + f2fs_put_page(page, 1); + + f2fs_bug_on(sbi, ses->entry_cnt); + release_sit_entry_set(ses); + } + + f2fs_bug_on(sbi, !list_empty(head)); + f2fs_bug_on(sbi, sit_i->dirty_sentries); +out: + if (cpc->reason == CP_DISCARD) { + for (; cpc->trim_start <= cpc->trim_end; cpc->trim_start++) + add_discard_addrs(sbi, cpc); } mutex_unlock(&sit_i->sentry_lock); mutex_unlock(&curseg->curseg_mutex); - /* writeout last modified SIT block */ - f2fs_put_page(page, 1); - set_prefree_as_free_segments(sbi); } @@ -1603,16 +1770,16 @@ static int build_sit_info(struct f2fs_sb_info *sbi) SM_I(sbi)->sit_info = sit_i; - sit_i->sentries = vzalloc(TOTAL_SEGS(sbi) * sizeof(struct seg_entry)); + sit_i->sentries = vzalloc(MAIN_SEGS(sbi) * sizeof(struct seg_entry)); if (!sit_i->sentries) return -ENOMEM; - bitmap_size = f2fs_bitmap_size(TOTAL_SEGS(sbi)); + bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); sit_i->dirty_sentries_bitmap = kzalloc(bitmap_size, GFP_KERNEL); if (!sit_i->dirty_sentries_bitmap) return -ENOMEM; - for (start = 0; start < TOTAL_SEGS(sbi); start++) { + for (start = 0; start < MAIN_SEGS(sbi); start++) { sit_i->sentries[start].cur_valid_map = kzalloc(SIT_VBLOCK_MAP_SIZE, GFP_KERNEL); sit_i->sentries[start].ckpt_valid_map @@ -1623,7 +1790,7 @@ static int build_sit_info(struct f2fs_sb_info *sbi) } if (sbi->segs_per_sec > 1) { - sit_i->sec_entries = vzalloc(TOTAL_SECS(sbi) * + sit_i->sec_entries = vzalloc(MAIN_SECS(sbi) * sizeof(struct sec_entry)); if (!sit_i->sec_entries) return -ENOMEM; @@ -1658,7 +1825,6 @@ static int build_sit_info(struct f2fs_sb_info *sbi) static int build_free_segmap(struct f2fs_sb_info *sbi) { - struct f2fs_sm_info *sm_info = SM_I(sbi); struct free_segmap_info *free_i; unsigned int bitmap_size, sec_bitmap_size; @@ -1669,12 +1835,12 @@ static int build_free_segmap(struct f2fs_sb_info *sbi) SM_I(sbi)->free_info = free_i; - bitmap_size = f2fs_bitmap_size(TOTAL_SEGS(sbi)); + bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); free_i->free_segmap = kmalloc(bitmap_size, GFP_KERNEL); if (!free_i->free_segmap) return -ENOMEM; - sec_bitmap_size = f2fs_bitmap_size(TOTAL_SECS(sbi)); + sec_bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); free_i->free_secmap = kmalloc(sec_bitmap_size, GFP_KERNEL); if (!free_i->free_secmap) return -ENOMEM; @@ -1684,8 +1850,7 @@ static int build_free_segmap(struct f2fs_sb_info *sbi) memset(free_i->free_secmap, 0xff, sec_bitmap_size); /* init free segmap information */ - free_i->start_segno = - (unsigned int) GET_SEGNO_FROM_SEG0(sbi, sm_info->main_blkaddr); + free_i->start_segno = GET_SEGNO_FROM_SEG0(sbi, MAIN_BLKADDR(sbi)); free_i->free_segments = 0; free_i->free_sections = 0; rwlock_init(&free_i->segmap_lock); @@ -1722,7 +1887,7 @@ static void build_sit_entries(struct f2fs_sb_info *sbi) int sit_blk_cnt = SIT_BLK_CNT(sbi); unsigned int i, start, end; unsigned int readed, start_blk = 0; - int nrpages = MAX_BIO_BLOCKS(max_hw_blocks(sbi)); + int nrpages = MAX_BIO_BLOCKS(sbi); do { readed = ra_meta_pages(sbi, start_blk, nrpages, META_SIT); @@ -1730,7 +1895,7 @@ static void build_sit_entries(struct f2fs_sb_info *sbi) start = start_blk * sit_i->sents_per_block; end = (start_blk + readed) * sit_i->sents_per_block; - for (; start < end && start < TOTAL_SEGS(sbi); start++) { + for (; start < end && start < MAIN_SEGS(sbi); start++) { struct seg_entry *se = &sit_i->sentries[start]; struct f2fs_sit_block *sit_blk; struct f2fs_sit_entry sit; @@ -1768,7 +1933,7 @@ static void init_free_segmap(struct f2fs_sb_info *sbi) unsigned int start; int type; - for (start = 0; start < TOTAL_SEGS(sbi); start++) { + for (start = 0; start < MAIN_SEGS(sbi); start++) { struct seg_entry *sentry = get_seg_entry(sbi, start); if (!sentry->valid_blocks) __set_free(sbi, start); @@ -1785,18 +1950,22 @@ static void init_dirty_segmap(struct f2fs_sb_info *sbi) { struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); struct free_segmap_info *free_i = FREE_I(sbi); - unsigned int segno = 0, offset = 0, total_segs = TOTAL_SEGS(sbi); + unsigned int segno = 0, offset = 0; unsigned short valid_blocks; while (1) { /* find dirty segment based on free segmap */ - segno = find_next_inuse(free_i, total_segs, offset); - if (segno >= total_segs) + segno = find_next_inuse(free_i, MAIN_SEGS(sbi), offset); + if (segno >= MAIN_SEGS(sbi)) break; offset = segno + 1; valid_blocks = get_valid_blocks(sbi, segno, 0); - if (valid_blocks >= sbi->blocks_per_seg || !valid_blocks) + if (valid_blocks == sbi->blocks_per_seg || !valid_blocks) + continue; + if (valid_blocks > sbi->blocks_per_seg) { + f2fs_bug_on(sbi, 1); continue; + } mutex_lock(&dirty_i->seglist_lock); __locate_dirty_segment(sbi, segno, DIRTY); mutex_unlock(&dirty_i->seglist_lock); @@ -1806,7 +1975,7 @@ static void init_dirty_segmap(struct f2fs_sb_info *sbi) static int init_victim_secmap(struct f2fs_sb_info *sbi) { struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); - unsigned int bitmap_size = f2fs_bitmap_size(TOTAL_SECS(sbi)); + unsigned int bitmap_size = f2fs_bitmap_size(MAIN_SECS(sbi)); dirty_i->victim_secmap = kzalloc(bitmap_size, GFP_KERNEL); if (!dirty_i->victim_secmap) @@ -1827,7 +1996,7 @@ static int build_dirty_segmap(struct f2fs_sb_info *sbi) SM_I(sbi)->dirty_info = dirty_i; mutex_init(&dirty_i->seglist_lock); - bitmap_size = f2fs_bitmap_size(TOTAL_SEGS(sbi)); + bitmap_size = f2fs_bitmap_size(MAIN_SEGS(sbi)); for (i = 0; i < NR_DIRTY_TYPE; i++) { dirty_i->dirty_segmap[i] = kzalloc(bitmap_size, GFP_KERNEL); @@ -1851,7 +2020,7 @@ static void init_min_max_mtime(struct f2fs_sb_info *sbi) sit_i->min_mtime = LLONG_MAX; - for (segno = 0; segno < TOTAL_SEGS(sbi); segno += sbi->segs_per_sec) { + for (segno = 0; segno < MAIN_SEGS(sbi); segno += sbi->segs_per_sec) { unsigned int i; unsigned long long mtime = 0; @@ -1889,13 +2058,16 @@ int build_segment_manager(struct f2fs_sb_info *sbi) sm_info->ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); sm_info->rec_prefree_segments = sm_info->main_segments * DEF_RECLAIM_PREFREE_SEGMENTS / 100; - sm_info->ipu_policy = F2FS_IPU_DISABLE; + sm_info->ipu_policy = 1 << F2FS_IPU_FSYNC; sm_info->min_ipu_util = DEF_MIN_IPU_UTIL; + sm_info->min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS; INIT_LIST_HEAD(&sm_info->discard_list); sm_info->nr_discards = 0; sm_info->max_discards = 0; + INIT_LIST_HEAD(&sm_info->sit_entry_set); + if (test_opt(sbi, FLUSH_MERGE) && !f2fs_readonly(sbi->sb)) { err = create_flush_cmd_control(sbi); if (err) @@ -1991,7 +2163,7 @@ static void destroy_sit_info(struct f2fs_sb_info *sbi) return; if (sit_i->sentries) { - for (start = 0; start < TOTAL_SEGS(sbi); start++) { + for (start = 0; start < MAIN_SEGS(sbi); start++) { kfree(sit_i->sentries[start].cur_valid_map); kfree(sit_i->sentries[start].ckpt_valid_map); } @@ -2025,11 +2197,30 @@ int __init create_segment_manager_caches(void) discard_entry_slab = f2fs_kmem_cache_create("discard_entry", sizeof(struct discard_entry)); if (!discard_entry_slab) - return -ENOMEM; + goto fail; + + sit_entry_set_slab = f2fs_kmem_cache_create("sit_entry_set", + sizeof(struct nat_entry_set)); + if (!sit_entry_set_slab) + goto destory_discard_entry; + + inmem_entry_slab = f2fs_kmem_cache_create("inmem_page_entry", + sizeof(struct inmem_pages)); + if (!inmem_entry_slab) + goto destroy_sit_entry_set; return 0; + +destroy_sit_entry_set: + kmem_cache_destroy(sit_entry_set_slab); +destory_discard_entry: + kmem_cache_destroy(discard_entry_slab); +fail: + return -ENOMEM; } void destroy_segment_manager_caches(void) { + kmem_cache_destroy(sit_entry_set_slab); kmem_cache_destroy(discard_entry_slab); + kmem_cache_destroy(inmem_entry_slab); } diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h index 55973f7b0330..2495bec1c621 100644 --- a/fs/f2fs/segment.h +++ b/fs/f2fs/segment.h @@ -45,16 +45,26 @@ (secno == CURSEG_I(sbi, CURSEG_COLD_NODE)->segno / \ sbi->segs_per_sec)) \ -#define START_BLOCK(sbi, segno) \ - (SM_I(sbi)->seg0_blkaddr + \ +#define MAIN_BLKADDR(sbi) (SM_I(sbi)->main_blkaddr) +#define SEG0_BLKADDR(sbi) (SM_I(sbi)->seg0_blkaddr) + +#define MAIN_SEGS(sbi) (SM_I(sbi)->main_segments) +#define MAIN_SECS(sbi) (sbi->total_sections) + +#define TOTAL_SEGS(sbi) (SM_I(sbi)->segment_count) +#define TOTAL_BLKS(sbi) (TOTAL_SEGS(sbi) << sbi->log_blocks_per_seg) + +#define MAX_BLKADDR(sbi) (SEG0_BLKADDR(sbi) + TOTAL_BLKS(sbi)) +#define SEGMENT_SIZE(sbi) (1ULL << (sbi->log_blocksize + \ + sbi->log_blocks_per_seg)) + +#define START_BLOCK(sbi, segno) (SEG0_BLKADDR(sbi) + \ (GET_R2L_SEGNO(FREE_I(sbi), segno) << sbi->log_blocks_per_seg)) + #define NEXT_FREE_BLKADDR(sbi, curseg) \ (START_BLOCK(sbi, curseg->segno) + curseg->next_blkoff) -#define MAIN_BASE_BLOCK(sbi) (SM_I(sbi)->main_blkaddr) - -#define GET_SEGOFF_FROM_SEG0(sbi, blk_addr) \ - ((blk_addr) - SM_I(sbi)->seg0_blkaddr) +#define GET_SEGOFF_FROM_SEG0(sbi, blk_addr) ((blk_addr) - SEG0_BLKADDR(sbi)) #define GET_SEGNO_FROM_SEG0(sbi, blk_addr) \ (GET_SEGOFF_FROM_SEG0(sbi, blk_addr) >> sbi->log_blocks_per_seg) #define GET_BLKOFF_FROM_SEG0(sbi, blk_addr) \ @@ -77,23 +87,21 @@ #define SIT_ENTRY_OFFSET(sit_i, segno) \ (segno % sit_i->sents_per_block) -#define SIT_BLOCK_OFFSET(sit_i, segno) \ +#define SIT_BLOCK_OFFSET(segno) \ (segno / SIT_ENTRY_PER_BLOCK) -#define START_SEGNO(sit_i, segno) \ - (SIT_BLOCK_OFFSET(sit_i, segno) * SIT_ENTRY_PER_BLOCK) +#define START_SEGNO(segno) \ + (SIT_BLOCK_OFFSET(segno) * SIT_ENTRY_PER_BLOCK) #define SIT_BLK_CNT(sbi) \ - ((TOTAL_SEGS(sbi) + SIT_ENTRY_PER_BLOCK - 1) / SIT_ENTRY_PER_BLOCK) + ((MAIN_SEGS(sbi) + SIT_ENTRY_PER_BLOCK - 1) / SIT_ENTRY_PER_BLOCK) #define f2fs_bitmap_size(nr) \ (BITS_TO_LONGS(nr) * sizeof(unsigned long)) -#define TOTAL_SEGS(sbi) (SM_I(sbi)->main_segments) -#define TOTAL_SECS(sbi) (sbi->total_sections) -#define SECTOR_FROM_BLOCK(sbi, blk_addr) \ - (((sector_t)blk_addr) << (sbi)->log_sectors_per_block) -#define SECTOR_TO_BLOCK(sbi, sectors) \ - (sectors >> (sbi)->log_sectors_per_block) -#define MAX_BIO_BLOCKS(max_hw_blocks) \ - (min((int)max_hw_blocks, BIO_MAX_PAGES)) +#define SECTOR_FROM_BLOCK(blk_addr) \ + (((sector_t)blk_addr) << F2FS_LOG_SECTORS_PER_BLOCK) +#define SECTOR_TO_BLOCK(sectors) \ + (sectors >> F2FS_LOG_SECTORS_PER_BLOCK) +#define MAX_BIO_BLOCKS(sbi) \ + ((int)min((int)max_hw_blocks(sbi), BIO_MAX_PAGES)) /* * indicate a block allocation direction: RIGHT and LEFT. @@ -167,6 +175,11 @@ struct segment_allocation { void (*allocate_segment)(struct f2fs_sb_info *, int, bool); }; +struct inmem_pages { + struct list_head list; + struct page *page; +}; + struct sit_info { const struct segment_allocation *s_ops; @@ -237,6 +250,12 @@ struct curseg_info { unsigned int next_segno; /* preallocated segment */ }; +struct sit_entry_set { + struct list_head set_list; /* link with all sit sets */ + unsigned int start_segno; /* start segno of sits in set */ + unsigned int entry_cnt; /* the # of sit entries in set */ +}; + /* * inline functions */ @@ -316,7 +335,7 @@ static inline void __set_free(struct f2fs_sb_info *sbi, unsigned int segno) clear_bit(segno, free_i->free_segmap); free_i->free_segments++; - next = find_next_bit(free_i->free_segmap, TOTAL_SEGS(sbi), start_segno); + next = find_next_bit(free_i->free_segmap, MAIN_SEGS(sbi), start_segno); if (next >= start_segno + sbi->segs_per_sec) { clear_bit(secno, free_i->free_secmap); free_i->free_sections++; @@ -430,8 +449,10 @@ static inline int reserved_sections(struct f2fs_sb_info *sbi) static inline bool need_SSR(struct f2fs_sb_info *sbi) { - return (prefree_segments(sbi) / sbi->segs_per_sec) - + free_sections(sbi) < overprovision_sections(sbi); + int node_secs = get_blocktype_secs(sbi, F2FS_DIRTY_NODES); + int dent_secs = get_blocktype_secs(sbi, F2FS_DIRTY_DENTS); + return free_sections(sbi) <= (node_secs + 2 * dent_secs + + reserved_sections(sbi) + 1); } static inline bool has_not_enough_free_secs(struct f2fs_sb_info *sbi, int freed) @@ -466,48 +487,47 @@ static inline int utilization(struct f2fs_sb_info *sbi) * F2FS_IPU_UTIL - if FS utilization is over threashold, * F2FS_IPU_SSR_UTIL - if SSR mode is activated and FS utilization is over * threashold, + * F2FS_IPU_FSYNC - activated in fsync path only for high performance flash + * storages. IPU will be triggered only if the # of dirty + * pages over min_fsync_blocks. * F2FS_IPUT_DISABLE - disable IPU. (=default option) */ #define DEF_MIN_IPU_UTIL 70 +#define DEF_MIN_FSYNC_BLOCKS 8 enum { F2FS_IPU_FORCE, F2FS_IPU_SSR, F2FS_IPU_UTIL, F2FS_IPU_SSR_UTIL, - F2FS_IPU_DISABLE, + F2FS_IPU_FSYNC, }; static inline bool need_inplace_update(struct inode *inode) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); + unsigned int policy = SM_I(sbi)->ipu_policy; /* IPU can be done only for the user data */ - if (S_ISDIR(inode->i_mode)) + if (S_ISDIR(inode->i_mode) || f2fs_is_atomic_file(inode)) return false; - /* this is only set during fdatasync */ - if (is_inode_flag_set(F2FS_I(inode), FI_NEED_IPU)) + if (policy & (0x1 << F2FS_IPU_FORCE)) + return true; + if (policy & (0x1 << F2FS_IPU_SSR) && need_SSR(sbi)) + return true; + if (policy & (0x1 << F2FS_IPU_UTIL) && + utilization(sbi) > SM_I(sbi)->min_ipu_util) + return true; + if (policy & (0x1 << F2FS_IPU_SSR_UTIL) && need_SSR(sbi) && + utilization(sbi) > SM_I(sbi)->min_ipu_util) return true; - switch (SM_I(sbi)->ipu_policy) { - case F2FS_IPU_FORCE: + /* this is only set during fdatasync */ + if (policy & (0x1 << F2FS_IPU_FSYNC) && + is_inode_flag_set(F2FS_I(inode), FI_NEED_IPU)) return true; - case F2FS_IPU_SSR: - if (need_SSR(sbi)) - return true; - break; - case F2FS_IPU_UTIL: - if (utilization(sbi) > SM_I(sbi)->min_ipu_util) - return true; - break; - case F2FS_IPU_SSR_UTIL: - if (need_SSR(sbi) && utilization(sbi) > SM_I(sbi)->min_ipu_util) - return true; - break; - case F2FS_IPU_DISABLE: - break; - } + return false; } @@ -534,28 +554,21 @@ static inline unsigned short curseg_blkoff(struct f2fs_sb_info *sbi, int type) #ifdef CONFIG_F2FS_CHECK_FS static inline void check_seg_range(struct f2fs_sb_info *sbi, unsigned int segno) { - unsigned int end_segno = SM_I(sbi)->segment_count - 1; - BUG_ON(segno > end_segno); + BUG_ON(segno > TOTAL_SEGS(sbi) - 1); } static inline void verify_block_addr(struct f2fs_sb_info *sbi, block_t blk_addr) { - struct f2fs_sm_info *sm_info = SM_I(sbi); - block_t total_blks = sm_info->segment_count << sbi->log_blocks_per_seg; - block_t start_addr = sm_info->seg0_blkaddr; - block_t end_addr = start_addr + total_blks - 1; - BUG_ON(blk_addr < start_addr); - BUG_ON(blk_addr > end_addr); + BUG_ON(blk_addr < SEG0_BLKADDR(sbi)); + BUG_ON(blk_addr >= MAX_BLKADDR(sbi)); } /* - * Summary block is always treated as invalid block + * Summary block is always treated as an invalid block */ static inline void check_block_count(struct f2fs_sb_info *sbi, int segno, struct f2fs_sit_entry *raw_sit) { - struct f2fs_sm_info *sm_info = SM_I(sbi); - unsigned int end_segno = sm_info->segment_count - 1; bool is_valid = test_bit_le(0, raw_sit->valid_map) ? true : false; int valid_blocks = 0; int cur_pos = 0, next_pos; @@ -564,7 +577,7 @@ static inline void check_block_count(struct f2fs_sb_info *sbi, BUG_ON(GET_SIT_VBLOCKS(raw_sit) > sbi->blocks_per_seg); /* check boundary of a given segment number */ - BUG_ON(segno > end_segno); + BUG_ON(segno > TOTAL_SEGS(sbi) - 1); /* check bitmap with valid block count */ do { @@ -583,16 +596,39 @@ static inline void check_block_count(struct f2fs_sb_info *sbi, BUG_ON(GET_SIT_VBLOCKS(raw_sit) != valid_blocks); } #else -#define check_seg_range(sbi, segno) -#define verify_block_addr(sbi, blk_addr) -#define check_block_count(sbi, segno, raw_sit) +static inline void check_seg_range(struct f2fs_sb_info *sbi, unsigned int segno) +{ + if (segno > TOTAL_SEGS(sbi) - 1) + sbi->need_fsck = true; +} + +static inline void verify_block_addr(struct f2fs_sb_info *sbi, block_t blk_addr) +{ + if (blk_addr < SEG0_BLKADDR(sbi) || blk_addr >= MAX_BLKADDR(sbi)) + sbi->need_fsck = true; +} + +/* + * Summary block is always treated as an invalid block + */ +static inline void check_block_count(struct f2fs_sb_info *sbi, + int segno, struct f2fs_sit_entry *raw_sit) +{ + /* check segment usage */ + if (GET_SIT_VBLOCKS(raw_sit) > sbi->blocks_per_seg) + sbi->need_fsck = true; + + /* check boundary of a given segment number */ + if (segno > TOTAL_SEGS(sbi) - 1) + sbi->need_fsck = true; +} #endif static inline pgoff_t current_sit_addr(struct f2fs_sb_info *sbi, unsigned int start) { struct sit_info *sit_i = SIT_I(sbi); - unsigned int offset = SIT_BLOCK_OFFSET(sit_i, start); + unsigned int offset = SIT_BLOCK_OFFSET(start); block_t blk_addr = sit_i->sit_base_addr + offset; check_seg_range(sbi, start); @@ -619,7 +655,7 @@ static inline pgoff_t next_sit_addr(struct f2fs_sb_info *sbi, static inline void set_to_next_sit(struct sit_info *sit_i, unsigned int start) { - unsigned int block_off = SIT_BLOCK_OFFSET(sit_i, start); + unsigned int block_off = SIT_BLOCK_OFFSET(start); if (f2fs_test_bit(block_off, sit_i->sit_bitmap)) f2fs_clear_bit(block_off, sit_i->sit_bitmap); @@ -666,7 +702,7 @@ static inline unsigned int max_hw_blocks(struct f2fs_sb_info *sbi) { struct block_device *bdev = sbi->sb->s_bdev; struct request_queue *q = bdev_get_queue(bdev); - return SECTOR_TO_BLOCK(sbi, queue_max_sectors(q)); + return SECTOR_TO_BLOCK(queue_max_sectors(q)); } /* @@ -683,7 +719,7 @@ static inline int nr_pages_to_skip(struct f2fs_sb_info *sbi, int type) else if (type == NODE) return 3 * sbi->blocks_per_seg; else if (type == META) - return MAX_BIO_BLOCKS(max_hw_blocks(sbi)); + return MAX_BIO_BLOCKS(sbi); else return 0; } @@ -706,7 +742,7 @@ static inline long nr_pages_to_write(struct f2fs_sb_info *sbi, int type, else if (type == NODE) desired = 3 * max_hw_blocks(sbi); else - desired = MAX_BIO_BLOCKS(max_hw_blocks(sbi)); + desired = MAX_BIO_BLOCKS(sbi); wbc->nr_to_write = desired; return desired - nr_to_write; diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index 657582fc7601..41d6f700f4ee 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -190,6 +190,7 @@ F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments); F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, max_small_discards, max_discards); F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); +F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks); F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search); F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level); @@ -204,6 +205,7 @@ static struct attribute *f2fs_attrs[] = { ATTR_LIST(max_small_discards), ATTR_LIST(ipu_policy), ATTR_LIST(min_ipu_util), + ATTR_LIST(min_fsync_blocks), ATTR_LIST(max_victim_search), ATTR_LIST(dir_level), ATTR_LIST(ram_thresh), @@ -366,11 +368,13 @@ static struct inode *f2fs_alloc_inode(struct super_block *sb) /* Initialize f2fs-specific inode info */ fi->vfs_inode.i_version = 1; - atomic_set(&fi->dirty_dents, 0); + atomic_set(&fi->dirty_pages, 0); fi->i_current_depth = 1; fi->i_advise = 0; rwlock_init(&fi->ext.ext_lock); init_rwsem(&fi->i_sem); + INIT_LIST_HEAD(&fi->inmem_pages); + mutex_init(&fi->inmem_lock); set_inode_flag(fi, FI_NEW_INODE); @@ -432,8 +436,19 @@ static void f2fs_put_super(struct super_block *sb) stop_gc_thread(sbi); /* We don't need to do checkpoint when it's clean */ - if (sbi->s_dirty && get_pages(sbi, F2FS_DIRTY_NODES)) - write_checkpoint(sbi, true); + if (sbi->s_dirty) { + struct cp_control cpc = { + .reason = CP_UMOUNT, + }; + write_checkpoint(sbi, &cpc); + } + + /* + * normally superblock is clean, so we need to release this. + * In addition, EIO will skip do checkpoint, we need this as well. + */ + release_dirty_inode(sbi); + release_discard_addrs(sbi); iput(sbi->node_inode); iput(sbi->meta_inode); @@ -457,12 +472,12 @@ int f2fs_sync_fs(struct super_block *sb, int sync) trace_f2fs_sync_fs(sb, sync); - if (!sbi->s_dirty && !get_pages(sbi, F2FS_DIRTY_NODES)) - return 0; - if (sync) { + struct cp_control cpc = { + .reason = CP_SYNC, + }; mutex_lock(&sbi->gc_mutex); - write_checkpoint(sbi, false); + write_checkpoint(sbi, &cpc); mutex_unlock(&sbi->gc_mutex); } else { f2fs_balance_fs(sbi); @@ -505,8 +520,8 @@ static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) buf->f_bfree = buf->f_blocks - valid_user_blocks(sbi) - ovp_count; buf->f_bavail = user_block_count - valid_user_blocks(sbi); - buf->f_files = sbi->total_node_count; - buf->f_ffree = sbi->total_node_count - valid_inode_count(sbi); + buf->f_files = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; + buf->f_ffree = buf->f_files - valid_inode_count(sbi); buf->f_namelen = F2FS_NAME_LEN; buf->f_fsid.val[0] = (u32)id; @@ -613,6 +628,9 @@ static int f2fs_remount(struct super_block *sb, int *flags, char *data) org_mount_opt = sbi->mount_opt; active_logs = sbi->active_logs; + sbi->mount_opt.opt = 0; + sbi->active_logs = NR_CURSEG_TYPE; + /* parse mount options */ err = parse_options(sb, data); if (err) @@ -663,7 +681,7 @@ restore_gc: if (need_restart_gc) { if (start_gc_thread(sbi)) f2fs_msg(sbi->sb, KERN_WARNING, - "background gc thread is stop"); + "background gc thread has stopped"); } else if (need_stop_gc) { stop_gc_thread(sbi); } @@ -783,14 +801,22 @@ static int sanity_check_raw_super(struct super_block *sb, return 1; } - if (le32_to_cpu(raw_super->log_sectorsize) != - F2FS_LOG_SECTOR_SIZE) { - f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize"); + /* Currently, support 512/1024/2048/4096 bytes sector size */ + if (le32_to_cpu(raw_super->log_sectorsize) > + F2FS_MAX_LOG_SECTOR_SIZE || + le32_to_cpu(raw_super->log_sectorsize) < + F2FS_MIN_LOG_SECTOR_SIZE) { + f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)", + le32_to_cpu(raw_super->log_sectorsize)); return 1; } - if (le32_to_cpu(raw_super->log_sectors_per_block) != - F2FS_LOG_SECTORS_PER_BLOCK) { - f2fs_msg(sb, KERN_INFO, "Invalid log sectors per block"); + if (le32_to_cpu(raw_super->log_sectors_per_block) + + le32_to_cpu(raw_super->log_sectorsize) != + F2FS_MAX_LOG_SECTOR_SIZE) { + f2fs_msg(sb, KERN_INFO, + "Invalid log sectors per block(%u) log sectorsize(%u)", + le32_to_cpu(raw_super->log_sectors_per_block), + le32_to_cpu(raw_super->log_sectorsize)); return 1; } return 0; @@ -812,7 +838,7 @@ static int sanity_check_ckpt(struct f2fs_sb_info *sbi) if (unlikely(fsmeta >= total)) return 1; - if (unlikely(is_set_ckpt_flags(ckpt, CP_ERROR_FLAG))) { + if (unlikely(f2fs_cp_error(sbi))) { f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck"); return 1; } @@ -846,6 +872,7 @@ static void init_sb_info(struct f2fs_sb_info *sbi) atomic_set(&sbi->nr_pages[i], 0); sbi->dir_level = DEF_DIR_LEVEL; + sbi->need_fsck = false; } /* @@ -899,8 +926,10 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent) struct buffer_head *raw_super_buf; struct inode *root; long err = -EINVAL; + bool retry = true; int i; +try_onemore: /* allocate memory for f2fs-specific super block info */ sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); if (!sbi) @@ -1077,12 +1106,17 @@ static int f2fs_fill_super(struct super_block *sb, void *data, int silent) if (err) goto free_proc; + if (!retry) + sbi->need_fsck = true; + /* recover fsynced data */ if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) { err = recover_fsync_data(sbi); - if (err) + if (err) { f2fs_msg(sb, KERN_ERR, "Cannot recover all fsync data errno=%ld", err); + goto free_kobj; + } } /* @@ -1123,6 +1157,13 @@ free_sb_buf: brelse(raw_super_buf); free_sbi: kfree(sbi); + + /* give only one another chance */ + if (retry) { + retry = 0; + shrink_dcache_sb(sb); + goto try_onemore; + } return err; } diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c index 8bea941ee309..deca8728117b 100644 --- a/fs/f2fs/xattr.c +++ b/fs/f2fs/xattr.c @@ -266,7 +266,7 @@ static struct f2fs_xattr_entry *__find_xattr(void *base_addr, int index, static void *read_all_xattrs(struct inode *inode, struct page *ipage) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); struct f2fs_xattr_header *header; size_t size = PAGE_SIZE, inline_size = 0; void *txattr_addr; @@ -325,7 +325,7 @@ fail: static inline int write_all_xattrs(struct inode *inode, __u32 hsize, void *txattr_addr, struct page *ipage) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); size_t inline_size = 0; void *xattr_addr; struct page *xpage; @@ -373,7 +373,7 @@ static inline int write_all_xattrs(struct inode *inode, __u32 hsize, alloc_nid_failed(sbi, new_nid); return PTR_ERR(xpage); } - f2fs_bug_on(new_nid); + f2fs_bug_on(sbi, new_nid); f2fs_wait_on_page_writeback(xpage, NODE); } else { struct dnode_of_data dn; @@ -528,7 +528,7 @@ static int __f2fs_setxattr(struct inode *inode, int index, int free; /* * If value is NULL, it is remove operation. - * In case of update operation, we caculate free. + * In case of update operation, we calculate free. */ free = MIN_OFFSET(inode) - ((char *)last - (char *)base_addr); if (found) @@ -596,7 +596,7 @@ int f2fs_setxattr(struct inode *inode, int index, const char *name, const void *value, size_t size, struct page *ipage, int flags) { - struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb); + struct f2fs_sb_info *sbi = F2FS_I_SB(inode); int err; /* this case is only from init_inode_metadata */ diff --git a/fs/fscache/object.c b/fs/fscache/object.c index d3b4539f1651..da032daf0e0d 100644 --- a/fs/fscache/object.c +++ b/fs/fscache/object.c @@ -982,6 +982,7 @@ nomem: submit_op_failed: clear_bit(FSCACHE_OBJECT_IS_LIVE, &object->flags); spin_unlock(&cookie->lock); + fscache_unuse_cookie(object); kfree(op); _leave(" [EIO]"); return transit_to(KILL_OBJECT); diff --git a/fs/fscache/page.c b/fs/fscache/page.c index 85332b9d19d1..de33b3fccca6 100644 --- a/fs/fscache/page.c +++ b/fs/fscache/page.c @@ -44,6 +44,19 @@ void __fscache_wait_on_page_write(struct fscache_cookie *cookie, struct page *pa EXPORT_SYMBOL(__fscache_wait_on_page_write); /* + * wait for a page to finish being written to the cache. Put a timeout here + * since we might be called recursively via parent fs. + */ +static +bool release_page_wait_timeout(struct fscache_cookie *cookie, struct page *page) +{ + wait_queue_head_t *wq = bit_waitqueue(&cookie->flags, 0); + + return wait_event_timeout(*wq, !__fscache_check_page_write(cookie, page), + HZ); +} + +/* * decide whether a page can be released, possibly by cancelling a store to it * - we're allowed to sleep if __GFP_WAIT is flagged */ @@ -115,7 +128,10 @@ page_busy: } fscache_stat(&fscache_n_store_vmscan_wait); - __fscache_wait_on_page_write(cookie, page); + if (!release_page_wait_timeout(cookie, page)) + _debug("fscache writeout timeout page: %p{%lx}", + page, page->index); + gfp &= ~__GFP_WAIT; goto try_again; } @@ -182,7 +198,7 @@ int __fscache_attr_changed(struct fscache_cookie *cookie) { struct fscache_operation *op; struct fscache_object *object; - bool wake_cookie; + bool wake_cookie = false; _enter("%p", cookie); @@ -212,15 +228,16 @@ int __fscache_attr_changed(struct fscache_cookie *cookie) __fscache_use_cookie(cookie); if (fscache_submit_exclusive_op(object, op) < 0) - goto nobufs; + goto nobufs_dec; spin_unlock(&cookie->lock); fscache_stat(&fscache_n_attr_changed_ok); fscache_put_operation(op); _leave(" = 0"); return 0; -nobufs: +nobufs_dec: wake_cookie = __fscache_unuse_cookie(cookie); +nobufs: spin_unlock(&cookie->lock); kfree(op); if (wake_cookie) diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 912061ac4baf..caa8d95b24e8 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1305,6 +1305,7 @@ static int fuse_get_user_pages(struct fuse_req *req, struct iov_iter *ii, size_t start; ssize_t ret = iov_iter_get_pages(ii, &req->pages[req->num_pages], + *nbytesp - nbytes, req->max_pages - req->num_pages, &start); if (ret < 0) diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index e6ee5b6e8d99..f0b945ab853e 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -359,7 +359,7 @@ static inline void release_metapath(struct metapath *mp) * Returns: The length of the extent (minimum of one block) */ -static inline unsigned int gfs2_extent_length(void *start, unsigned int len, __be64 *ptr, unsigned limit, int *eob) +static inline unsigned int gfs2_extent_length(void *start, unsigned int len, __be64 *ptr, size_t limit, int *eob) { const __be64 *end = (start + len); const __be64 *first = ptr; @@ -449,7 +449,7 @@ static int gfs2_bmap_alloc(struct inode *inode, const sector_t lblock, struct buffer_head *bh_map, struct metapath *mp, const unsigned int sheight, const unsigned int height, - const unsigned int maxlen) + const size_t maxlen) { struct gfs2_inode *ip = GFS2_I(inode); struct gfs2_sbd *sdp = GFS2_SB(inode); @@ -483,7 +483,8 @@ static int gfs2_bmap_alloc(struct inode *inode, const sector_t lblock, } else { /* Need to allocate indirect blocks */ ptrs_per_blk = height > 1 ? sdp->sd_inptrs : sdp->sd_diptrs; - dblks = min(maxlen, ptrs_per_blk - mp->mp_list[end_of_metadata]); + dblks = min(maxlen, (size_t)(ptrs_per_blk - + mp->mp_list[end_of_metadata])); if (height == ip->i_height) { /* Writing into existing tree, extend tree down */ iblks = height - sheight; @@ -605,7 +606,7 @@ int gfs2_block_map(struct inode *inode, sector_t lblock, struct gfs2_inode *ip = GFS2_I(inode); struct gfs2_sbd *sdp = GFS2_SB(inode); unsigned int bsize = sdp->sd_sb.sb_bsize; - const unsigned int maxlen = bh_map->b_size >> inode->i_blkbits; + const size_t maxlen = bh_map->b_size >> inode->i_blkbits; const u64 *arr = sdp->sd_heightsize; __be64 *ptr; u64 size; diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c index 26b3f952e6b1..7f4ed3daa38c 100644 --- a/fs/gfs2/file.c +++ b/fs/gfs2/file.c @@ -26,6 +26,7 @@ #include <linux/dlm.h> #include <linux/dlm_plock.h> #include <linux/aio.h> +#include <linux/delay.h> #include "gfs2.h" #include "incore.h" @@ -979,9 +980,10 @@ static int do_flock(struct file *file, int cmd, struct file_lock *fl) unsigned int state; int flags; int error = 0; + int sleeptime; state = (fl->fl_type == F_WRLCK) ? LM_ST_EXCLUSIVE : LM_ST_SHARED; - flags = (IS_SETLKW(cmd) ? 0 : LM_FLAG_TRY) | GL_EXACT; + flags = (IS_SETLKW(cmd) ? 0 : LM_FLAG_TRY_1CB) | GL_EXACT; mutex_lock(&fp->f_fl_mutex); @@ -1001,7 +1003,14 @@ static int do_flock(struct file *file, int cmd, struct file_lock *fl) gfs2_holder_init(gl, state, flags, fl_gh); gfs2_glock_put(gl); } - error = gfs2_glock_nq(fl_gh); + for (sleeptime = 1; sleeptime <= 4; sleeptime <<= 1) { + error = gfs2_glock_nq(fl_gh); + if (error != GLR_TRYFAILED) + break; + fl_gh->gh_flags = LM_FLAG_TRY | GL_EXACT; + fl_gh->gh_error = 0; + msleep(sleeptime); + } if (error) { gfs2_holder_uninit(fl_gh); if (error == GLR_TRYFAILED) @@ -1024,7 +1033,7 @@ static void do_unflock(struct file *file, struct file_lock *fl) mutex_lock(&fp->f_fl_mutex); flock_lock_file_wait(file, fl); if (fl_gh->gh_gl) { - gfs2_glock_dq_wait(fl_gh); + gfs2_glock_dq(fl_gh); gfs2_holder_uninit(fl_gh); } mutex_unlock(&fp->f_fl_mutex); diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index 67d310c9ada3..39e7e9959b74 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -262,6 +262,9 @@ struct gfs2_holder { unsigned long gh_ip; }; +/* Number of quota types we support */ +#define GFS2_MAXQUOTAS 2 + /* Resource group multi-block reservation, in order of appearance: Step 1. Function prepares to write, allocates a mb, sets the size hint. @@ -282,8 +285,8 @@ struct gfs2_blkreserv { u64 rs_inum; /* Inode number for reservation */ /* ancillary quota stuff */ - struct gfs2_quota_data *rs_qa_qd[2 * MAXQUOTAS]; - struct gfs2_holder rs_qa_qd_ghs[2 * MAXQUOTAS]; + struct gfs2_quota_data *rs_qa_qd[2 * GFS2_MAXQUOTAS]; + struct gfs2_holder rs_qa_qd_ghs[2 * GFS2_MAXQUOTAS]; unsigned int rs_qa_qd_num; }; diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c index e62e59477884..fc8ac2ee0667 100644 --- a/fs/gfs2/inode.c +++ b/fs/gfs2/inode.c @@ -626,8 +626,10 @@ static int gfs2_create_inode(struct inode *dir, struct dentry *dentry, if (!IS_ERR(inode)) { d = d_splice_alias(inode, dentry); error = PTR_ERR(d); - if (IS_ERR(d)) + if (IS_ERR(d)) { + inode = ERR_CAST(d); goto fail_gunlock; + } error = 0; if (file) { if (S_ISREG(inode->i_mode)) { @@ -840,8 +842,10 @@ static struct dentry *__gfs2_lookup(struct inode *dir, struct dentry *dentry, int error; inode = gfs2_lookupi(dir, &dentry->d_name, 0); - if (!inode) + if (inode == NULL) { + d_add(dentry, NULL); return NULL; + } if (IS_ERR(inode)) return ERR_CAST(inode); @@ -854,7 +858,6 @@ static struct dentry *__gfs2_lookup(struct inode *dir, struct dentry *dentry, d = d_splice_alias(inode, dentry); if (IS_ERR(d)) { - iput(inode); gfs2_glock_dq_uninit(&gh); return d; } diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 2607ff13d486..a346f56c4c6d 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -1294,7 +1294,7 @@ static int gfs2_show_options(struct seq_file *s, struct dentry *root) int val; if (is_ancestor(root, sdp->sd_master_dir)) - seq_printf(s, ",meta"); + seq_puts(s, ",meta"); if (args->ar_lockproto[0]) seq_printf(s, ",lockproto=%s", args->ar_lockproto); if (args->ar_locktable[0]) @@ -1302,13 +1302,13 @@ static int gfs2_show_options(struct seq_file *s, struct dentry *root) if (args->ar_hostdata[0]) seq_printf(s, ",hostdata=%s", args->ar_hostdata); if (args->ar_spectator) - seq_printf(s, ",spectator"); + seq_puts(s, ",spectator"); if (args->ar_localflocks) - seq_printf(s, ",localflocks"); + seq_puts(s, ",localflocks"); if (args->ar_debug) - seq_printf(s, ",debug"); + seq_puts(s, ",debug"); if (args->ar_posix_acl) - seq_printf(s, ",acl"); + seq_puts(s, ",acl"); if (args->ar_quota != GFS2_QUOTA_DEFAULT) { char *state; switch (args->ar_quota) { @@ -1328,7 +1328,7 @@ static int gfs2_show_options(struct seq_file *s, struct dentry *root) seq_printf(s, ",quota=%s", state); } if (args->ar_suiddir) - seq_printf(s, ",suiddir"); + seq_puts(s, ",suiddir"); if (args->ar_data != GFS2_DATA_DEFAULT) { char *state; switch (args->ar_data) { @@ -1345,7 +1345,7 @@ static int gfs2_show_options(struct seq_file *s, struct dentry *root) seq_printf(s, ",data=%s", state); } if (args->ar_discard) - seq_printf(s, ",discard"); + seq_puts(s, ",discard"); val = sdp->sd_tune.gt_logd_secs; if (val != 30) seq_printf(s, ",commit=%d", val); @@ -1376,11 +1376,11 @@ static int gfs2_show_options(struct seq_file *s, struct dentry *root) seq_printf(s, ",errors=%s", state); } if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags)) - seq_printf(s, ",nobarrier"); + seq_puts(s, ",nobarrier"); if (test_bit(SDF_DEMOTE, &sdp->sd_flags)) - seq_printf(s, ",demote_interface_used"); + seq_puts(s, ",demote_interface_used"); if (args->ar_rgrplvb) - seq_printf(s, ",rgrplvb"); + seq_puts(s, ",rgrplvb"); return 0; } diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index 6fac74349856..b73e0215baa7 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -97,7 +97,7 @@ static void jbd2_commit_block_csum_set(journal_t *j, struct buffer_head *bh) struct commit_header *h; __u32 csum; - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return; h = (struct commit_header *)(bh->b_data); @@ -313,11 +313,11 @@ static __u32 jbd2_checksum_data(__u32 crc32_sum, struct buffer_head *bh) return checksum; } -static void write_tag_block(int tag_bytes, journal_block_tag_t *tag, +static void write_tag_block(journal_t *j, journal_block_tag_t *tag, unsigned long long block) { tag->t_blocknr = cpu_to_be32(block & (u32)~0); - if (tag_bytes > JBD2_TAG_SIZE32) + if (JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_64BIT)) tag->t_blocknr_high = cpu_to_be32((block >> 31) >> 1); } @@ -327,7 +327,7 @@ static void jbd2_descr_block_csum_set(journal_t *j, struct jbd2_journal_block_tail *tail; __u32 csum; - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return; tail = (struct jbd2_journal_block_tail *)(bh->b_data + j->j_blocksize - @@ -340,12 +340,13 @@ static void jbd2_descr_block_csum_set(journal_t *j, static void jbd2_block_tag_csum_set(journal_t *j, journal_block_tag_t *tag, struct buffer_head *bh, __u32 sequence) { + journal_block_tag3_t *tag3 = (journal_block_tag3_t *)tag; struct page *page = bh->b_page; __u8 *addr; __u32 csum32; __be32 seq; - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return; seq = cpu_to_be32(sequence); @@ -355,8 +356,10 @@ static void jbd2_block_tag_csum_set(journal_t *j, journal_block_tag_t *tag, bh->b_size); kunmap_atomic(addr); - /* We only have space to store the lower 16 bits of the crc32c. */ - tag->t_checksum = cpu_to_be16(csum32); + if (JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V3)) + tag3->t_checksum = cpu_to_be32(csum32); + else + tag->t_checksum = cpu_to_be16(csum32); } /* * jbd2_journal_commit_transaction @@ -396,7 +399,7 @@ void jbd2_journal_commit_transaction(journal_t *journal) LIST_HEAD(io_bufs); LIST_HEAD(log_bufs); - if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (jbd2_journal_has_csum_v2or3(journal)) csum_size = sizeof(struct jbd2_journal_block_tail); /* @@ -690,7 +693,7 @@ void jbd2_journal_commit_transaction(journal_t *journal) tag_flag |= JBD2_FLAG_SAME_UUID; tag = (journal_block_tag_t *) tagp; - write_tag_block(tag_bytes, tag, jh2bh(jh)->b_blocknr); + write_tag_block(journal, tag, jh2bh(jh)->b_blocknr); tag->t_flags = cpu_to_be16(tag_flag); jbd2_block_tag_csum_set(journal, tag, wbuf[bufs], commit_transaction->t_tid); diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index 67b8e303946c..19d74d86d99c 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -124,7 +124,7 @@ EXPORT_SYMBOL(__jbd2_debug); /* Checksumming functions */ static int jbd2_verify_csum_type(journal_t *j, journal_superblock_t *sb) { - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return 1; return sb->s_checksum_type == JBD2_CRC32C_CHKSUM; @@ -145,7 +145,7 @@ static __be32 jbd2_superblock_csum(journal_t *j, journal_superblock_t *sb) static int jbd2_superblock_csum_verify(journal_t *j, journal_superblock_t *sb) { - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return 1; return sb->s_checksum == jbd2_superblock_csum(j, sb); @@ -153,7 +153,7 @@ static int jbd2_superblock_csum_verify(journal_t *j, journal_superblock_t *sb) static void jbd2_superblock_csum_set(journal_t *j, journal_superblock_t *sb) { - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return; sb->s_checksum = jbd2_superblock_csum(j, sb); @@ -1522,21 +1522,29 @@ static int journal_get_superblock(journal_t *journal) goto out; } - if (JBD2_HAS_COMPAT_FEATURE(journal, JBD2_FEATURE_COMPAT_CHECKSUM) && - JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2)) { + if (jbd2_journal_has_csum_v2or3(journal) && + JBD2_HAS_COMPAT_FEATURE(journal, JBD2_FEATURE_COMPAT_CHECKSUM)) { /* Can't have checksum v1 and v2 on at the same time! */ printk(KERN_ERR "JBD2: Can't enable checksumming v1 and v2 " "at the same time!\n"); goto out; } + if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2) && + JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V3)) { + /* Can't have checksum v2 and v3 at the same time! */ + printk(KERN_ERR "JBD2: Can't enable checksumming v2 and v3 " + "at the same time!\n"); + goto out; + } + if (!jbd2_verify_csum_type(journal, sb)) { printk(KERN_ERR "JBD2: Unknown checksum type\n"); goto out; } /* Load the checksum driver */ - if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2)) { + if (jbd2_journal_has_csum_v2or3(journal)) { journal->j_chksum_driver = crypto_alloc_shash("crc32c", 0, 0); if (IS_ERR(journal->j_chksum_driver)) { printk(KERN_ERR "JBD2: Cannot load crc32c driver.\n"); @@ -1553,7 +1561,7 @@ static int journal_get_superblock(journal_t *journal) } /* Precompute checksum seed for all metadata */ - if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (jbd2_journal_has_csum_v2or3(journal)) journal->j_csum_seed = jbd2_chksum(journal, ~0, sb->s_uuid, sizeof(sb->s_uuid)); @@ -1813,8 +1821,14 @@ int jbd2_journal_set_features (journal_t *journal, unsigned long compat, if (!jbd2_journal_check_available_features(journal, compat, ro, incompat)) return 0; - /* Asking for checksumming v2 and v1? Only give them v2. */ - if (incompat & JBD2_FEATURE_INCOMPAT_CSUM_V2 && + /* If enabling v2 checksums, turn on v3 instead */ + if (incompat & JBD2_FEATURE_INCOMPAT_CSUM_V2) { + incompat &= ~JBD2_FEATURE_INCOMPAT_CSUM_V2; + incompat |= JBD2_FEATURE_INCOMPAT_CSUM_V3; + } + + /* Asking for checksumming v3 and v1? Only give them v3. */ + if (incompat & JBD2_FEATURE_INCOMPAT_CSUM_V3 && compat & JBD2_FEATURE_COMPAT_CHECKSUM) compat &= ~JBD2_FEATURE_COMPAT_CHECKSUM; @@ -1823,8 +1837,8 @@ int jbd2_journal_set_features (journal_t *journal, unsigned long compat, sb = journal->j_superblock; - /* If enabling v2 checksums, update superblock */ - if (INCOMPAT_FEATURE_ON(JBD2_FEATURE_INCOMPAT_CSUM_V2)) { + /* If enabling v3 checksums, update superblock */ + if (INCOMPAT_FEATURE_ON(JBD2_FEATURE_INCOMPAT_CSUM_V3)) { sb->s_checksum_type = JBD2_CRC32C_CHKSUM; sb->s_feature_compat &= ~cpu_to_be32(JBD2_FEATURE_COMPAT_CHECKSUM); @@ -1842,8 +1856,7 @@ int jbd2_journal_set_features (journal_t *journal, unsigned long compat, } /* Precompute checksum seed for all metadata */ - if (JBD2_HAS_INCOMPAT_FEATURE(journal, - JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (jbd2_journal_has_csum_v2or3(journal)) journal->j_csum_seed = jbd2_chksum(journal, ~0, sb->s_uuid, sizeof(sb->s_uuid)); @@ -1852,7 +1865,8 @@ int jbd2_journal_set_features (journal_t *journal, unsigned long compat, /* If enabling v1 checksums, downgrade superblock */ if (COMPAT_FEATURE_ON(JBD2_FEATURE_COMPAT_CHECKSUM)) sb->s_feature_incompat &= - ~cpu_to_be32(JBD2_FEATURE_INCOMPAT_CSUM_V2); + ~cpu_to_be32(JBD2_FEATURE_INCOMPAT_CSUM_V2 | + JBD2_FEATURE_INCOMPAT_CSUM_V3); sb->s_feature_compat |= cpu_to_be32(compat); sb->s_feature_ro_compat |= cpu_to_be32(ro); @@ -2165,16 +2179,20 @@ int jbd2_journal_blocks_per_page(struct inode *inode) */ size_t journal_tag_bytes(journal_t *journal) { - journal_block_tag_t tag; - size_t x = 0; + size_t sz; + + if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V3)) + return sizeof(journal_block_tag3_t); + + sz = sizeof(journal_block_tag_t); if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2)) - x += sizeof(tag.t_checksum); + sz += sizeof(__u16); if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_64BIT)) - return x + JBD2_TAG_SIZE64; + return sz; else - return x + JBD2_TAG_SIZE32; + return sz - sizeof(__u32); } /* diff --git a/fs/jbd2/recovery.c b/fs/jbd2/recovery.c index 3b6bb19d60b1..9b329b55ffe3 100644 --- a/fs/jbd2/recovery.c +++ b/fs/jbd2/recovery.c @@ -181,7 +181,7 @@ static int jbd2_descr_block_csum_verify(journal_t *j, __be32 provided; __u32 calculated; - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return 1; tail = (struct jbd2_journal_block_tail *)(buf + j->j_blocksize - @@ -205,7 +205,7 @@ static int count_tags(journal_t *journal, struct buffer_head *bh) int nr = 0, size = journal->j_blocksize; int tag_bytes = journal_tag_bytes(journal); - if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (jbd2_journal_has_csum_v2or3(journal)) size -= sizeof(struct jbd2_journal_block_tail); tagp = &bh->b_data[sizeof(journal_header_t)]; @@ -338,10 +338,11 @@ int jbd2_journal_skip_recovery(journal_t *journal) return err; } -static inline unsigned long long read_tag_block(int tag_bytes, journal_block_tag_t *tag) +static inline unsigned long long read_tag_block(journal_t *journal, + journal_block_tag_t *tag) { unsigned long long block = be32_to_cpu(tag->t_blocknr); - if (tag_bytes > JBD2_TAG_SIZE32) + if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_64BIT)) block |= (u64)be32_to_cpu(tag->t_blocknr_high) << 32; return block; } @@ -384,7 +385,7 @@ static int jbd2_commit_block_csum_verify(journal_t *j, void *buf) __be32 provided; __u32 calculated; - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return 1; h = buf; @@ -399,17 +400,21 @@ static int jbd2_commit_block_csum_verify(journal_t *j, void *buf) static int jbd2_block_tag_csum_verify(journal_t *j, journal_block_tag_t *tag, void *buf, __u32 sequence) { + journal_block_tag3_t *tag3 = (journal_block_tag3_t *)tag; __u32 csum32; __be32 seq; - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return 1; seq = cpu_to_be32(sequence); csum32 = jbd2_chksum(j, j->j_csum_seed, (__u8 *)&seq, sizeof(seq)); csum32 = jbd2_chksum(j, csum32, buf, j->j_blocksize); - return tag->t_checksum == cpu_to_be16(csum32); + if (JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V3)) + return tag3->t_checksum == cpu_to_be32(csum32); + else + return tag->t_checksum == cpu_to_be16(csum32); } static int do_one_pass(journal_t *journal, @@ -426,6 +431,7 @@ static int do_one_pass(journal_t *journal, int tag_bytes = journal_tag_bytes(journal); __u32 crc32_sum = ~0; /* Transactional Checksums */ int descr_csum_size = 0; + int block_error = 0; /* * First thing is to establish what we expect to find in the log @@ -512,8 +518,7 @@ static int do_one_pass(journal_t *journal, switch(blocktype) { case JBD2_DESCRIPTOR_BLOCK: /* Verify checksum first */ - if (JBD2_HAS_INCOMPAT_FEATURE(journal, - JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (jbd2_journal_has_csum_v2or3(journal)) descr_csum_size = sizeof(struct jbd2_journal_block_tail); if (descr_csum_size > 0 && @@ -574,7 +579,7 @@ static int do_one_pass(journal_t *journal, unsigned long long blocknr; J_ASSERT(obh != NULL); - blocknr = read_tag_block(tag_bytes, + blocknr = read_tag_block(journal, tag); /* If the block has been @@ -598,7 +603,8 @@ static int do_one_pass(journal_t *journal, "checksum recovering " "block %llu in log\n", blocknr); - continue; + block_error = 1; + goto skip_write; } /* Find a buffer for the new @@ -797,7 +803,8 @@ static int do_one_pass(journal_t *journal, success = -EIO; } } - + if (block_error && success == 0) + success = -EIO; return success; failed: @@ -811,7 +818,7 @@ static int jbd2_revoke_block_csum_verify(journal_t *j, __be32 provided; __u32 calculated; - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return 1; tail = (struct jbd2_journal_revoke_tail *)(buf + j->j_blocksize - diff --git a/fs/jbd2/revoke.c b/fs/jbd2/revoke.c index 198c9c10276d..d5e95a175c92 100644 --- a/fs/jbd2/revoke.c +++ b/fs/jbd2/revoke.c @@ -91,8 +91,8 @@ #include <linux/list.h> #include <linux/init.h> #include <linux/bio.h> -#endif #include <linux/log2.h> +#endif static struct kmem_cache *jbd2_revoke_record_cache; static struct kmem_cache *jbd2_revoke_table_cache; @@ -597,7 +597,7 @@ static void write_one_revoke_record(journal_t *journal, offset = *offsetp; /* Do we need to leave space at the end for a checksum? */ - if (JBD2_HAS_INCOMPAT_FEATURE(journal, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (jbd2_journal_has_csum_v2or3(journal)) csum_size = sizeof(struct jbd2_journal_revoke_tail); /* Make sure we have a descriptor with space left for the record */ @@ -644,7 +644,7 @@ static void jbd2_revoke_csum_set(journal_t *j, struct buffer_head *bh) struct jbd2_journal_revoke_tail *tail; __u32 csum; - if (!JBD2_HAS_INCOMPAT_FEATURE(j, JBD2_FEATURE_INCOMPAT_CSUM_V2)) + if (!jbd2_journal_has_csum_v2or3(j)) return; tail = (struct jbd2_journal_revoke_tail *)(bh->b_data + j->j_blocksize - diff --git a/fs/lockd/Makefile b/fs/lockd/Makefile index ca58d64374ca..9b320cc2a8cf 100644 --- a/fs/lockd/Makefile +++ b/fs/lockd/Makefile @@ -5,6 +5,7 @@ obj-$(CONFIG_LOCKD) += lockd.o lockd-objs-y := clntlock.o clntproc.o clntxdr.o host.o svc.o svclock.o \ - svcshare.o svcproc.o svcsubs.o mon.o xdr.o grace.o + svcshare.o svcproc.o svcsubs.o mon.o xdr.o lockd-objs-$(CONFIG_LOCKD_V4) += clnt4xdr.o xdr4.o svc4proc.o +lockd-objs-$(CONFIG_PROC_FS) += procfs.o lockd-objs := $(lockd-objs-y) diff --git a/fs/lockd/mon.c b/fs/lockd/mon.c index daa8e7514eae..9106f42c472c 100644 --- a/fs/lockd/mon.c +++ b/fs/lockd/mon.c @@ -159,6 +159,12 @@ static int nsm_mon_unmon(struct nsm_handle *nsm, u32 proc, struct nsm_res *res, msg.rpc_proc = &clnt->cl_procinfo[proc]; status = rpc_call_sync(clnt, &msg, RPC_TASK_SOFTCONN); + if (status == -ECONNREFUSED) { + dprintk("lockd: NSM upcall RPC failed, status=%d, forcing rebind\n", + status); + rpc_force_rebind(clnt); + status = rpc_call_sync(clnt, &msg, RPC_TASK_SOFTCONN); + } if (status < 0) dprintk("lockd: NSM upcall RPC failed, status=%d\n", status); diff --git a/fs/lockd/netns.h b/fs/lockd/netns.h index 5010b55628b4..097bfa3adb1c 100644 --- a/fs/lockd/netns.h +++ b/fs/lockd/netns.h @@ -11,7 +11,6 @@ struct lockd_net { struct delayed_work grace_period_end; struct lock_manager lockd_manager; - struct list_head grace_list; spinlock_t nsm_clnt_lock; unsigned int nsm_users; diff --git a/fs/lockd/procfs.c b/fs/lockd/procfs.c new file mode 100644 index 000000000000..2a0a98480e39 --- /dev/null +++ b/fs/lockd/procfs.c @@ -0,0 +1,92 @@ +/* + * Procfs support for lockd + * + * Copyright (c) 2014 Jeff Layton <jlayton@primarydata.com> + */ + +#include <linux/fs.h> +#include <linux/proc_fs.h> +#include <linux/module.h> +#include <linux/nsproxy.h> +#include <net/net_namespace.h> + +#include "netns.h" +#include "procfs.h" + +/* + * We only allow strings that start with 'Y', 'y', or '1'. + */ +static ssize_t +nlm_end_grace_write(struct file *file, const char __user *buf, size_t size, + loff_t *pos) +{ + char *data; + struct lockd_net *ln = net_generic(current->nsproxy->net_ns, + lockd_net_id); + + if (size < 1) + return -EINVAL; + + data = simple_transaction_get(file, buf, size); + if (IS_ERR(data)) + return PTR_ERR(data); + + switch(data[0]) { + case 'Y': + case 'y': + case '1': + locks_end_grace(&ln->lockd_manager); + break; + default: + return -EINVAL; + } + + return size; +} + +static ssize_t +nlm_end_grace_read(struct file *file, char __user *buf, size_t size, + loff_t *pos) +{ + struct lockd_net *ln = net_generic(current->nsproxy->net_ns, + lockd_net_id); + char resp[3]; + + resp[0] = list_empty(&ln->lockd_manager.list) ? 'Y' : 'N'; + resp[1] = '\n'; + resp[2] = '\0'; + + return simple_read_from_buffer(buf, size, pos, resp, sizeof(resp)); +} + +static const struct file_operations lockd_end_grace_operations = { + .write = nlm_end_grace_write, + .read = nlm_end_grace_read, + .llseek = default_llseek, + .release = simple_transaction_release, + .owner = THIS_MODULE, +}; + +int __init +lockd_create_procfs(void) +{ + struct proc_dir_entry *entry; + + entry = proc_mkdir("fs/lockd", NULL); + if (!entry) + return -ENOMEM; + entry = proc_create("nlm_end_grace", S_IRUGO|S_IWUSR, entry, + &lockd_end_grace_operations); + if (!entry) { + remove_proc_entry("fs/lockd", NULL); + return -ENOMEM; + } + return 0; +} + +void __exit +lockd_remove_procfs(void) +{ + remove_proc_entry("fs/lockd/nlm_end_grace", NULL); + remove_proc_entry("fs/lockd", NULL); +} diff --git a/fs/lockd/procfs.h b/fs/lockd/procfs.h new file mode 100644 index 000000000000..2257a1311027 --- /dev/null +++ b/fs/lockd/procfs.h @@ -0,0 +1,28 @@ +/* + * Procfs support for lockd + * + * Copyright (c) 2014 Jeff Layton <jlayton@primarydata.com> + */ +#ifndef _LOCKD_PROCFS_H +#define _LOCKD_PROCFS_H + +#include <linux/kconfig.h> + +#if IS_ENABLED(CONFIG_PROC_FS) +int lockd_create_procfs(void); +void lockd_remove_procfs(void); +#else +static inline int +lockd_create_procfs(void) +{ + return 0; +} + +static inline void +lockd_remove_procfs(void) +{ + return; +} +#endif /* IS_ENABLED(CONFIG_PROC_FS) */ + +#endif /* _LOCKD_PROCFS_H */ diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c index 8f27c93f8d2e..d1bb7ecfd201 100644 --- a/fs/lockd/svc.c +++ b/fs/lockd/svc.c @@ -36,6 +36,7 @@ #include <linux/nfs.h> #include "netns.h" +#include "procfs.h" #define NLMDBG_FACILITY NLMDBG_SVC #define LOCKD_BUFSIZE (1024 + NLMSVC_XDRSIZE) @@ -253,13 +254,11 @@ static int lockd_up_net(struct svc_serv *serv, struct net *net) error = make_socks(serv, net); if (error < 0) - goto err_socks; + goto err_bind; set_grace_period(net); dprintk("lockd_up_net: per-net data created; net=%p\n", net); return 0; -err_socks: - svc_rpcb_cleanup(serv, net); err_bind: ln->nlmsvc_users--; return error; @@ -306,13 +305,16 @@ static int lockd_start_svc(struct svc_serv *serv) svc_sock_update_bufs(serv); serv->sv_maxconn = nlm_max_connections; - nlmsvc_task = kthread_run(lockd, nlmsvc_rqst, "%s", serv->sv_name); + nlmsvc_task = kthread_create(lockd, nlmsvc_rqst, "%s", serv->sv_name); if (IS_ERR(nlmsvc_task)) { error = PTR_ERR(nlmsvc_task); printk(KERN_WARNING "lockd_up: kthread_run failed, error=%d\n", error); goto out_task; } + nlmsvc_rqst->rq_task = nlmsvc_task; + wake_up_process(nlmsvc_task); + dprintk("lockd_up: service started\n"); return 0; @@ -583,7 +585,7 @@ static int lockd_init_net(struct net *net) struct lockd_net *ln = net_generic(net, lockd_net_id); INIT_DELAYED_WORK(&ln->grace_period_end, grace_ender); - INIT_LIST_HEAD(&ln->grace_list); + INIT_LIST_HEAD(&ln->lockd_manager.list); spin_lock_init(&ln->nsm_clnt_lock); return 0; } @@ -617,8 +619,15 @@ static int __init init_nlm(void) err = register_pernet_subsys(&lockd_net_ops); if (err) goto err_pernet; + + err = lockd_create_procfs(); + if (err) + goto err_procfs; + return 0; +err_procfs: + unregister_pernet_subsys(&lockd_net_ops); err_pernet: #ifdef CONFIG_SYSCTL unregister_sysctl_table(nlm_sysctl_table); @@ -631,6 +640,7 @@ static void __exit exit_nlm(void) { /* FIXME: delete all NLM clients */ nlm_shutdown_hosts(); + lockd_remove_procfs(); unregister_pernet_subsys(&lockd_net_ops); #ifdef CONFIG_SYSCTL unregister_sysctl_table(nlm_sysctl_table); diff --git a/fs/locks.c b/fs/locks.c index cb66fb05ad4a..bb08857f90b5 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -1619,7 +1619,7 @@ static int generic_add_lease(struct file *filp, long arg, struct file_lock **flp smp_mb(); error = check_conflicting_open(dentry, arg); if (error) - locks_unlink_lock(flp); + locks_unlink_lock(before); out: if (is_deleg) mutex_unlock(&inode->i_mutex); diff --git a/fs/namei.c b/fs/namei.c index a996bb48dfab..a7b05bf82d31 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -34,6 +34,7 @@ #include <linux/device_cgroup.h> #include <linux/fs_struct.h> #include <linux/posix_acl.h> +#include <linux/hash.h> #include <asm/uaccess.h> #include "internal.h" @@ -643,24 +644,22 @@ static int complete_walk(struct nameidata *nd) static __always_inline void set_root(struct nameidata *nd) { - if (!nd->root.mnt) - get_fs_root(current->fs, &nd->root); + get_fs_root(current->fs, &nd->root); } static int link_path_walk(const char *, struct nameidata *); -static __always_inline void set_root_rcu(struct nameidata *nd) +static __always_inline unsigned set_root_rcu(struct nameidata *nd) { - if (!nd->root.mnt) { - struct fs_struct *fs = current->fs; - unsigned seq; + struct fs_struct *fs = current->fs; + unsigned seq, res; - do { - seq = read_seqcount_begin(&fs->seq); - nd->root = fs->root; - nd->seq = __read_seqcount_begin(&nd->root.dentry->d_seq); - } while (read_seqcount_retry(&fs->seq, seq)); - } + do { + seq = read_seqcount_begin(&fs->seq); + nd->root = fs->root; + res = __read_seqcount_begin(&nd->root.dentry->d_seq); + } while (read_seqcount_retry(&fs->seq, seq)); + return res; } static void path_put_conditional(struct path *path, struct nameidata *nd) @@ -860,7 +859,8 @@ follow_link(struct path *link, struct nameidata *nd, void **p) return PTR_ERR(s); } if (*s == '/') { - set_root(nd); + if (!nd->root.mnt) + set_root(nd); path_put(&nd->path); nd->path = nd->root; path_get(&nd->root); @@ -1137,13 +1137,15 @@ static bool __follow_mount_rcu(struct nameidata *nd, struct path *path, */ *inode = path->dentry->d_inode; } - return read_seqretry(&mount_lock, nd->m_seq) && + return !read_seqretry(&mount_lock, nd->m_seq) && !(path->dentry->d_flags & DCACHE_NEED_AUTOMOUNT); } static int follow_dotdot_rcu(struct nameidata *nd) { - set_root_rcu(nd); + struct inode *inode = nd->inode; + if (!nd->root.mnt) + set_root_rcu(nd); while (1) { if (nd->path.dentry == nd->root.dentry && @@ -1155,6 +1157,7 @@ static int follow_dotdot_rcu(struct nameidata *nd) struct dentry *parent = old->d_parent; unsigned seq; + inode = parent->d_inode; seq = read_seqcount_begin(&parent->d_seq); if (read_seqcount_retry(&old->d_seq, nd->seq)) goto failed; @@ -1164,6 +1167,7 @@ static int follow_dotdot_rcu(struct nameidata *nd) } if (!follow_up_rcu(&nd->path)) break; + inode = nd->path.dentry->d_inode; nd->seq = read_seqcount_begin(&nd->path.dentry->d_seq); } while (d_mountpoint(nd->path.dentry)) { @@ -1173,11 +1177,12 @@ static int follow_dotdot_rcu(struct nameidata *nd) break; nd->path.mnt = &mounted->mnt; nd->path.dentry = mounted->mnt.mnt_root; + inode = nd->path.dentry->d_inode; nd->seq = read_seqcount_begin(&nd->path.dentry->d_seq); - if (!read_seqretry(&mount_lock, nd->m_seq)) + if (read_seqretry(&mount_lock, nd->m_seq)) goto failed; } - nd->inode = nd->path.dentry->d_inode; + nd->inode = inode; return 0; failed: @@ -1256,7 +1261,8 @@ static void follow_mount(struct path *path) static void follow_dotdot(struct nameidata *nd) { - set_root(nd); + if (!nd->root.mnt) + set_root(nd); while(1) { struct dentry *old = nd->path.dentry; @@ -1634,8 +1640,7 @@ static inline int nested_symlink(struct path *path, struct nameidata *nd) static inline unsigned int fold_hash(unsigned long hash) { - hash += hash >> (8*sizeof(int)); - return hash; + return hash_64(hash, 32); } #else /* 32-bit case */ @@ -1669,9 +1674,9 @@ EXPORT_SYMBOL(full_name_hash); /* * Calculate the length and hash of the path component, and - * return the length of the component; + * return the "hash_len" as the result. */ -static inline unsigned long hash_name(const char *name, unsigned int *hashp) +static inline u64 hash_name(const char *name) { unsigned long a, b, adata, bdata, mask, hash, len; const struct word_at_a_time constants = WORD_AT_A_TIME_CONSTANTS; @@ -1691,9 +1696,8 @@ static inline unsigned long hash_name(const char *name, unsigned int *hashp) mask = create_zero_mask(adata | bdata); hash += a & zero_bytemask(mask); - *hashp = fold_hash(hash); - - return len + find_zero(mask); + len += find_zero(mask); + return hashlen_create(fold_hash(hash), len); } #else @@ -1711,7 +1715,7 @@ EXPORT_SYMBOL(full_name_hash); * We know there's a real path component here of at least * one character. */ -static inline unsigned long hash_name(const char *name, unsigned int *hashp) +static inline u64 hash_name(const char *name) { unsigned long hash = init_name_hash(); unsigned long len = 0, c; @@ -1722,8 +1726,7 @@ static inline unsigned long hash_name(const char *name, unsigned int *hashp) hash = partial_name_hash(c, hash); c = (unsigned char)name[len]; } while (c && c != '/'); - *hashp = end_name_hash(hash); - return len; + return hashlen_create(end_name_hash(hash), len); } #endif @@ -1748,20 +1751,17 @@ static int link_path_walk(const char *name, struct nameidata *nd) /* At this point we know we have a real path component. */ for(;;) { - struct qstr this; - long len; + u64 hash_len; int type; err = may_lookup(nd); if (err) break; - len = hash_name(name, &this.hash); - this.name = name; - this.len = len; + hash_len = hash_name(name); type = LAST_NORM; - if (name[0] == '.') switch (len) { + if (name[0] == '.') switch (hashlen_len(hash_len)) { case 2: if (name[1] == '.') { type = LAST_DOTDOT; @@ -1775,29 +1775,32 @@ static int link_path_walk(const char *name, struct nameidata *nd) struct dentry *parent = nd->path.dentry; nd->flags &= ~LOOKUP_JUMPED; if (unlikely(parent->d_flags & DCACHE_OP_HASH)) { + struct qstr this = { { .hash_len = hash_len }, .name = name }; err = parent->d_op->d_hash(parent, &this); if (err < 0) break; + hash_len = this.hash_len; + name = this.name; } } - nd->last = this; + nd->last.hash_len = hash_len; + nd->last.name = name; nd->last_type = type; - if (!name[len]) + name += hashlen_len(hash_len); + if (!*name) return 0; /* * If it wasn't NUL, we know it was '/'. Skip that * slash, and continue until no more slashes. */ do { - len++; - } while (unlikely(name[len] == '/')); - if (!name[len]) + name++; + } while (unlikely(*name == '/')); + if (!*name) return 0; - name += len; - err = walk_component(nd, &next, LOOKUP_FOLLOW); if (err < 0) return err; @@ -1852,7 +1855,7 @@ static int path_init(int dfd, const char *name, unsigned int flags, if (*name=='/') { if (flags & LOOKUP_RCU) { rcu_read_lock(); - set_root_rcu(nd); + nd->seq = set_root_rcu(nd); } else { set_root(nd); path_get(&nd->root); @@ -1903,7 +1906,14 @@ static int path_init(int dfd, const char *name, unsigned int flags, } nd->inode = nd->path.dentry->d_inode; - return 0; + if (!(flags & LOOKUP_RCU)) + return 0; + if (likely(!read_seqcount_retry(&nd->path.dentry->d_seq, nd->seq))) + return 0; + if (!(nd->flags & LOOKUP_ROOT)) + nd->root.mnt = NULL; + rcu_read_unlock(); + return -ECHILD; } static inline int lookup_last(struct nameidata *nd, struct path *path) diff --git a/fs/namespace.c b/fs/namespace.c index a01c7730e9af..ef42d9bee212 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1217,6 +1217,11 @@ static void namespace_unlock(void) head.first->pprev = &head.first; INIT_HLIST_HEAD(&unmounted); + /* undo decrements we'd done in umount_tree() */ + hlist_for_each_entry(mnt, &head, mnt_hash) + if (mnt->mnt_ex_mountpoint.mnt) + mntget(mnt->mnt_ex_mountpoint.mnt); + up_write(&namespace_sem); synchronize_rcu(); @@ -1253,6 +1258,9 @@ void umount_tree(struct mount *mnt, int how) hlist_add_head(&p->mnt_hash, &tmp_list); } + hlist_for_each_entry(p, &tmp_list, mnt_hash) + list_del_init(&p->mnt_child); + if (how) propagate_umount(&tmp_list); @@ -1263,9 +1271,9 @@ void umount_tree(struct mount *mnt, int how) p->mnt_ns = NULL; if (how < 2) p->mnt.mnt_flags |= MNT_SYNC_UMOUNT; - list_del_init(&p->mnt_child); if (mnt_has_parent(p)) { put_mountpoint(p->mnt_mp); + mnt_add_count(p->mnt_parent, -1); /* move the reference to mountpoint into ->mnt_ex_mountpoint */ p->mnt_ex_mountpoint.dentry = p->mnt_mountpoint; p->mnt_ex_mountpoint.mnt = &p->mnt_parent->mnt; diff --git a/fs/nfs/blocklayout/Makefile b/fs/nfs/blocklayout/Makefile index d5815505c020..3ca14c36d08b 100644 --- a/fs/nfs/blocklayout/Makefile +++ b/fs/nfs/blocklayout/Makefile @@ -2,4 +2,5 @@ # Makefile for the pNFS block layout driver kernel module # obj-$(CONFIG_PNFS_BLOCK) += blocklayoutdriver.o -blocklayoutdriver-objs := blocklayout.o extents.o blocklayoutdev.o blocklayoutdm.o + +blocklayoutdriver-y += blocklayout.o dev.o extent_tree.o rpc_pipefs.o diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c index cbb1797149d5..5228f201d3d5 100644 --- a/fs/nfs/blocklayout/blocklayout.c +++ b/fs/nfs/blocklayout/blocklayout.c @@ -35,7 +35,6 @@ #include <linux/mount.h> #include <linux/namei.h> #include <linux/bio.h> /* struct bio */ -#include <linux/buffer_head.h> /* various write calls */ #include <linux/prefetch.h> #include <linux/pagevec.h> @@ -50,40 +49,16 @@ MODULE_LICENSE("GPL"); MODULE_AUTHOR("Andy Adamson <andros@citi.umich.edu>"); MODULE_DESCRIPTION("The NFSv4.1 pNFS Block layout driver"); -static void print_page(struct page *page) +static bool is_hole(struct pnfs_block_extent *be) { - dprintk("PRINTPAGE page %p\n", page); - dprintk(" PagePrivate %d\n", PagePrivate(page)); - dprintk(" PageUptodate %d\n", PageUptodate(page)); - dprintk(" PageError %d\n", PageError(page)); - dprintk(" PageDirty %d\n", PageDirty(page)); - dprintk(" PageReferenced %d\n", PageReferenced(page)); - dprintk(" PageLocked %d\n", PageLocked(page)); - dprintk(" PageWriteback %d\n", PageWriteback(page)); - dprintk(" PageMappedToDisk %d\n", PageMappedToDisk(page)); - dprintk("\n"); -} - -/* Given the be associated with isect, determine if page data needs to be - * initialized. - */ -static int is_hole(struct pnfs_block_extent *be, sector_t isect) -{ - if (be->be_state == PNFS_BLOCK_NONE_DATA) - return 1; - else if (be->be_state != PNFS_BLOCK_INVALID_DATA) - return 0; - else - return !bl_is_sector_init(be->be_inval, isect); -} - -/* Given the be associated with isect, determine if page data can be - * written to disk. - */ -static int is_writable(struct pnfs_block_extent *be, sector_t isect) -{ - return (be->be_state == PNFS_BLOCK_READWRITE_DATA || - be->be_state == PNFS_BLOCK_INVALID_DATA); + switch (be->be_state) { + case PNFS_BLOCK_NONE_DATA: + return true; + case PNFS_BLOCK_INVALID_DATA: + return be->be_tag ? false : true; + default: + return false; + } } /* The data we are handed might be spread across several bios. We need @@ -91,9 +66,8 @@ static int is_writable(struct pnfs_block_extent *be, sector_t isect) */ struct parallel_io { struct kref refcnt; - void (*pnfs_callback) (void *data, int num_se); + void (*pnfs_callback) (void *data); void *data; - int bse_count; }; static inline struct parallel_io *alloc_parallel(void *data) @@ -104,7 +78,6 @@ static inline struct parallel_io *alloc_parallel(void *data) if (rv) { rv->data = data; kref_init(&rv->refcnt); - rv->bse_count = 0; } return rv; } @@ -119,7 +92,7 @@ static void destroy_parallel(struct kref *kref) struct parallel_io *p = container_of(kref, struct parallel_io, refcnt); dprintk("%s enter\n", __func__); - p->pnfs_callback(p->data, p->bse_count); + p->pnfs_callback(p->data); kfree(p); } @@ -141,10 +114,9 @@ bl_submit_bio(int rw, struct bio *bio) return NULL; } -static struct bio *bl_alloc_init_bio(int npg, sector_t isect, - struct pnfs_block_extent *be, - void (*end_io)(struct bio *, int err), - struct parallel_io *par) +static struct bio * +bl_alloc_init_bio(int npg, struct block_device *bdev, sector_t disk_sector, + void (*end_io)(struct bio *, int err), struct parallel_io *par) { struct bio *bio; @@ -156,58 +128,64 @@ static struct bio *bl_alloc_init_bio(int npg, sector_t isect, } if (bio) { - bio->bi_iter.bi_sector = isect - be->be_f_offset + - be->be_v_offset; - bio->bi_bdev = be->be_mdev; + bio->bi_iter.bi_sector = disk_sector; + bio->bi_bdev = bdev; bio->bi_end_io = end_io; bio->bi_private = par; } return bio; } -static struct bio *do_add_page_to_bio(struct bio *bio, int npg, int rw, - sector_t isect, struct page *page, - struct pnfs_block_extent *be, - void (*end_io)(struct bio *, int err), - struct parallel_io *par, - unsigned int offset, int len) +static struct bio * +do_add_page_to_bio(struct bio *bio, int npg, int rw, sector_t isect, + struct page *page, struct pnfs_block_dev_map *map, + struct pnfs_block_extent *be, + void (*end_io)(struct bio *, int err), + struct parallel_io *par, unsigned int offset, int *len) { - isect = isect + (offset >> SECTOR_SHIFT); + struct pnfs_block_dev *dev = + container_of(be->be_device, struct pnfs_block_dev, node); + u64 disk_addr, end; + dprintk("%s: npg %d rw %d isect %llu offset %u len %d\n", __func__, - npg, rw, (unsigned long long)isect, offset, len); + npg, rw, (unsigned long long)isect, offset, *len); + + /* translate to device offset */ + isect += be->be_v_offset; + isect -= be->be_f_offset; + + /* translate to physical disk offset */ + disk_addr = (u64)isect << SECTOR_SHIFT; + if (disk_addr < map->start || disk_addr >= map->start + map->len) { + if (!dev->map(dev, disk_addr, map)) + return ERR_PTR(-EIO); + bio = bl_submit_bio(rw, bio); + } + disk_addr += map->disk_offset; + disk_addr -= map->start; + + /* limit length to what the device mapping allows */ + end = disk_addr + *len; + if (end >= map->start + map->len) + *len = map->start + map->len - disk_addr; + retry: if (!bio) { - bio = bl_alloc_init_bio(npg, isect, be, end_io, par); + bio = bl_alloc_init_bio(npg, map->bdev, + disk_addr >> SECTOR_SHIFT, end_io, par); if (!bio) return ERR_PTR(-ENOMEM); } - if (bio_add_page(bio, page, len, offset) < len) { + if (bio_add_page(bio, page, *len, offset) < *len) { bio = bl_submit_bio(rw, bio); goto retry; } return bio; } -static struct bio *bl_add_page_to_bio(struct bio *bio, int npg, int rw, - sector_t isect, struct page *page, - struct pnfs_block_extent *be, - void (*end_io)(struct bio *, int err), - struct parallel_io *par) -{ - return do_add_page_to_bio(bio, npg, rw, isect, page, be, - end_io, par, 0, PAGE_CACHE_SIZE); -} - -/* This is basically copied from mpage_end_io_read */ static void bl_end_io_read(struct bio *bio, int err) { struct parallel_io *par = bio->bi_private; - struct bio_vec *bvec; - int i; - - if (!err) - bio_for_each_segment_all(bvec, bio, i) - SetPageUptodate(bvec->bv_page); if (err) { struct nfs_pgio_header *header = par->data; @@ -216,6 +194,7 @@ static void bl_end_io_read(struct bio *bio, int err) header->pnfs_error = -EIO; pnfs_set_lo_fail(header->lseg); } + bio_put(bio); put_parallel(par); } @@ -231,7 +210,7 @@ static void bl_read_cleanup(struct work_struct *work) } static void -bl_end_par_io_read(void *data, int unused) +bl_end_par_io_read(void *data) { struct nfs_pgio_header *hdr = data; @@ -241,88 +220,78 @@ bl_end_par_io_read(void *data, int unused) } static enum pnfs_try_status -bl_read_pagelist(struct nfs_pgio_header *hdr) +bl_read_pagelist(struct nfs_pgio_header *header) { - struct nfs_pgio_header *header = hdr; - int i, hole; + struct pnfs_block_layout *bl = BLK_LSEG2EXT(header->lseg); + struct pnfs_block_dev_map map = { .start = NFS4_MAX_UINT64 }; struct bio *bio = NULL; - struct pnfs_block_extent *be = NULL, *cow_read = NULL; + struct pnfs_block_extent be; sector_t isect, extent_length = 0; struct parallel_io *par; - loff_t f_offset = hdr->args.offset; - size_t bytes_left = hdr->args.count; + loff_t f_offset = header->args.offset; + size_t bytes_left = header->args.count; unsigned int pg_offset, pg_len; - struct page **pages = hdr->args.pages; - int pg_index = hdr->args.pgbase >> PAGE_CACHE_SHIFT; + struct page **pages = header->args.pages; + int pg_index = header->args.pgbase >> PAGE_CACHE_SHIFT; const bool is_dio = (header->dreq != NULL); + struct blk_plug plug; + int i; dprintk("%s enter nr_pages %u offset %lld count %u\n", __func__, - hdr->page_array.npages, f_offset, - (unsigned int)hdr->args.count); + header->page_array.npages, f_offset, + (unsigned int)header->args.count); - par = alloc_parallel(hdr); + par = alloc_parallel(header); if (!par) - goto use_mds; + return PNFS_NOT_ATTEMPTED; par->pnfs_callback = bl_end_par_io_read; - /* At this point, we can no longer jump to use_mds */ + + blk_start_plug(&plug); isect = (sector_t) (f_offset >> SECTOR_SHIFT); /* Code assumes extents are page-aligned */ - for (i = pg_index; i < hdr->page_array.npages; i++) { - if (!extent_length) { + for (i = pg_index; i < header->page_array.npages; i++) { + if (extent_length <= 0) { /* We've used up the previous extent */ - bl_put_extent(be); - bl_put_extent(cow_read); bio = bl_submit_bio(READ, bio); + /* Get the next one */ - be = bl_find_get_extent(BLK_LSEG2EXT(header->lseg), - isect, &cow_read); - if (!be) { + if (!ext_tree_lookup(bl, isect, &be, false)) { header->pnfs_error = -EIO; goto out; } - extent_length = be->be_length - - (isect - be->be_f_offset); - if (cow_read) { - sector_t cow_length = cow_read->be_length - - (isect - cow_read->be_f_offset); - extent_length = min(extent_length, cow_length); - } + extent_length = be.be_length - (isect - be.be_f_offset); } + pg_offset = f_offset & ~PAGE_CACHE_MASK; if (is_dio) { - pg_offset = f_offset & ~PAGE_CACHE_MASK; if (pg_offset + bytes_left > PAGE_CACHE_SIZE) pg_len = PAGE_CACHE_SIZE - pg_offset; else pg_len = bytes_left; - - f_offset += pg_len; - bytes_left -= pg_len; - isect += (pg_offset >> SECTOR_SHIFT); } else { - pg_offset = 0; + BUG_ON(pg_offset != 0); pg_len = PAGE_CACHE_SIZE; } - hole = is_hole(be, isect); - if (hole && !cow_read) { + isect += (pg_offset >> SECTOR_SHIFT); + extent_length -= (pg_offset >> SECTOR_SHIFT); + + if (is_hole(&be)) { bio = bl_submit_bio(READ, bio); /* Fill hole w/ zeroes w/o accessing device */ dprintk("%s Zeroing page for hole\n", __func__); zero_user_segment(pages[i], pg_offset, pg_len); - print_page(pages[i]); - SetPageUptodate(pages[i]); - } else { - struct pnfs_block_extent *be_read; - be_read = (hole && cow_read) ? cow_read : be; + /* invalidate map */ + map.start = NFS4_MAX_UINT64; + } else { bio = do_add_page_to_bio(bio, - hdr->page_array.npages - i, + header->page_array.npages - i, READ, - isect, pages[i], be_read, + isect, pages[i], &map, &be, bl_end_io_read, par, - pg_offset, pg_len); + pg_offset, &pg_len); if (IS_ERR(bio)) { header->pnfs_error = PTR_ERR(bio); bio = NULL; @@ -330,75 +299,21 @@ bl_read_pagelist(struct nfs_pgio_header *hdr) } } isect += (pg_len >> SECTOR_SHIFT); - extent_length -= PAGE_CACHE_SECTORS; + extent_length -= (pg_len >> SECTOR_SHIFT); + f_offset += pg_len; + bytes_left -= pg_len; } if ((isect << SECTOR_SHIFT) >= header->inode->i_size) { - hdr->res.eof = 1; - hdr->res.count = header->inode->i_size - hdr->args.offset; + header->res.eof = 1; + header->res.count = header->inode->i_size - header->args.offset; } else { - hdr->res.count = (isect << SECTOR_SHIFT) - hdr->args.offset; + header->res.count = (isect << SECTOR_SHIFT) - header->args.offset; } out: - bl_put_extent(be); - bl_put_extent(cow_read); bl_submit_bio(READ, bio); + blk_finish_plug(&plug); put_parallel(par); return PNFS_ATTEMPTED; - - use_mds: - dprintk("Giving up and using normal NFS\n"); - return PNFS_NOT_ATTEMPTED; -} - -static void mark_extents_written(struct pnfs_block_layout *bl, - __u64 offset, __u32 count) -{ - sector_t isect, end; - struct pnfs_block_extent *be; - struct pnfs_block_short_extent *se; - - dprintk("%s(%llu, %u)\n", __func__, offset, count); - if (count == 0) - return; - isect = (offset & (long)(PAGE_CACHE_MASK)) >> SECTOR_SHIFT; - end = (offset + count + PAGE_CACHE_SIZE - 1) & (long)(PAGE_CACHE_MASK); - end >>= SECTOR_SHIFT; - while (isect < end) { - sector_t len; - be = bl_find_get_extent(bl, isect, NULL); - BUG_ON(!be); /* FIXME */ - len = min(end, be->be_f_offset + be->be_length) - isect; - if (be->be_state == PNFS_BLOCK_INVALID_DATA) { - se = bl_pop_one_short_extent(be->be_inval); - BUG_ON(!se); - bl_mark_for_commit(be, isect, len, se); - } - isect += len; - bl_put_extent(be); - } -} - -static void bl_end_io_write_zero(struct bio *bio, int err) -{ - struct parallel_io *par = bio->bi_private; - struct bio_vec *bvec; - int i; - - bio_for_each_segment_all(bvec, bio, i) { - /* This is the zeroing page we added */ - end_page_writeback(bvec->bv_page); - page_cache_release(bvec->bv_page); - } - - if (unlikely(err)) { - struct nfs_pgio_header *header = par->data; - - if (!header->pnfs_error) - header->pnfs_error = -EIO; - pnfs_set_lo_fail(header->lseg); - } - bio_put(bio); - put_parallel(par); } static void bl_end_io_write(struct bio *bio, int err) @@ -421,533 +336,118 @@ static void bl_end_io_write(struct bio *bio, int err) */ static void bl_write_cleanup(struct work_struct *work) { - struct rpc_task *task; - struct nfs_pgio_header *hdr; + struct rpc_task *task = container_of(work, struct rpc_task, u.tk_work); + struct nfs_pgio_header *hdr = + container_of(task, struct nfs_pgio_header, task); + dprintk("%s enter\n", __func__); - task = container_of(work, struct rpc_task, u.tk_work); - hdr = container_of(task, struct nfs_pgio_header, task); + if (likely(!hdr->pnfs_error)) { - /* Marks for LAYOUTCOMMIT */ - mark_extents_written(BLK_LSEG2EXT(hdr->lseg), - hdr->args.offset, hdr->args.count); + struct pnfs_block_layout *bl = BLK_LSEG2EXT(hdr->lseg); + u64 start = hdr->args.offset & (loff_t)PAGE_CACHE_MASK; + u64 end = (hdr->args.offset + hdr->args.count + + PAGE_CACHE_SIZE - 1) & (loff_t)PAGE_CACHE_MASK; + + ext_tree_mark_written(bl, start >> SECTOR_SHIFT, + (end - start) >> SECTOR_SHIFT); } + pnfs_ld_write_done(hdr); } /* Called when last of bios associated with a bl_write_pagelist call finishes */ -static void bl_end_par_io_write(void *data, int num_se) +static void bl_end_par_io_write(void *data) { struct nfs_pgio_header *hdr = data; - if (unlikely(hdr->pnfs_error)) { - bl_free_short_extents(&BLK_LSEG2EXT(hdr->lseg)->bl_inval, - num_se); - } - hdr->task.tk_status = hdr->pnfs_error; hdr->verf.committed = NFS_FILE_SYNC; INIT_WORK(&hdr->task.u.tk_work, bl_write_cleanup); schedule_work(&hdr->task.u.tk_work); } -/* FIXME STUB - mark intersection of layout and page as bad, so is not - * used again. - */ -static void mark_bad_read(void) -{ - return; -} - -/* - * map_block: map a requested I/0 block (isect) into an offset in the LVM - * block_device - */ -static void -map_block(struct buffer_head *bh, sector_t isect, struct pnfs_block_extent *be) -{ - dprintk("%s enter be=%p\n", __func__, be); - - set_buffer_mapped(bh); - bh->b_bdev = be->be_mdev; - bh->b_blocknr = (isect - be->be_f_offset + be->be_v_offset) >> - (be->be_mdev->bd_inode->i_blkbits - SECTOR_SHIFT); - - dprintk("%s isect %llu, bh->b_blocknr %ld, using bsize %Zd\n", - __func__, (unsigned long long)isect, (long)bh->b_blocknr, - bh->b_size); - return; -} - -static void -bl_read_single_end_io(struct bio *bio, int error) -{ - struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1; - struct page *page = bvec->bv_page; - - /* Only one page in bvec */ - unlock_page(page); -} - -static int -bl_do_readpage_sync(struct page *page, struct pnfs_block_extent *be, - unsigned int offset, unsigned int len) -{ - struct bio *bio; - struct page *shadow_page; - sector_t isect; - char *kaddr, *kshadow_addr; - int ret = 0; - - dprintk("%s: offset %u len %u\n", __func__, offset, len); - - shadow_page = alloc_page(GFP_NOFS | __GFP_HIGHMEM); - if (shadow_page == NULL) - return -ENOMEM; - - bio = bio_alloc(GFP_NOIO, 1); - if (bio == NULL) - return -ENOMEM; - - isect = (page->index << PAGE_CACHE_SECTOR_SHIFT) + - (offset / SECTOR_SIZE); - - bio->bi_iter.bi_sector = isect - be->be_f_offset + be->be_v_offset; - bio->bi_bdev = be->be_mdev; - bio->bi_end_io = bl_read_single_end_io; - - lock_page(shadow_page); - if (bio_add_page(bio, shadow_page, - SECTOR_SIZE, round_down(offset, SECTOR_SIZE)) == 0) { - unlock_page(shadow_page); - bio_put(bio); - return -EIO; - } - - submit_bio(READ, bio); - wait_on_page_locked(shadow_page); - if (unlikely(!test_bit(BIO_UPTODATE, &bio->bi_flags))) { - ret = -EIO; - } else { - kaddr = kmap_atomic(page); - kshadow_addr = kmap_atomic(shadow_page); - memcpy(kaddr + offset, kshadow_addr + offset, len); - kunmap_atomic(kshadow_addr); - kunmap_atomic(kaddr); - } - __free_page(shadow_page); - bio_put(bio); - - return ret; -} - -static int -bl_read_partial_page_sync(struct page *page, struct pnfs_block_extent *be, - unsigned int dirty_offset, unsigned int dirty_len, - bool full_page) -{ - int ret = 0; - unsigned int start, end; - - if (full_page) { - start = 0; - end = PAGE_CACHE_SIZE; - } else { - start = round_down(dirty_offset, SECTOR_SIZE); - end = round_up(dirty_offset + dirty_len, SECTOR_SIZE); - } - - dprintk("%s: offset %u len %d\n", __func__, dirty_offset, dirty_len); - if (!be) { - zero_user_segments(page, start, dirty_offset, - dirty_offset + dirty_len, end); - if (start == 0 && end == PAGE_CACHE_SIZE && - trylock_page(page)) { - SetPageUptodate(page); - unlock_page(page); - } - return ret; - } - - if (start != dirty_offset) - ret = bl_do_readpage_sync(page, be, start, dirty_offset - start); - - if (!ret && (dirty_offset + dirty_len < end)) - ret = bl_do_readpage_sync(page, be, dirty_offset + dirty_len, - end - dirty_offset - dirty_len); - - return ret; -} - -/* Given an unmapped page, zero it or read in page for COW, page is locked - * by caller. - */ -static int -init_page_for_write(struct page *page, struct pnfs_block_extent *cow_read) -{ - struct buffer_head *bh = NULL; - int ret = 0; - sector_t isect; - - dprintk("%s enter, %p\n", __func__, page); - BUG_ON(PageUptodate(page)); - if (!cow_read) { - zero_user_segment(page, 0, PAGE_SIZE); - SetPageUptodate(page); - goto cleanup; - } - - bh = alloc_page_buffers(page, PAGE_CACHE_SIZE, 0); - if (!bh) { - ret = -ENOMEM; - goto cleanup; - } - - isect = (sector_t) page->index << PAGE_CACHE_SECTOR_SHIFT; - map_block(bh, isect, cow_read); - if (!bh_uptodate_or_lock(bh)) - ret = bh_submit_read(bh); - if (ret) - goto cleanup; - SetPageUptodate(page); - -cleanup: - if (bh) - free_buffer_head(bh); - if (ret) { - /* Need to mark layout with bad read...should now - * just use nfs4 for reads and writes. - */ - mark_bad_read(); - } - return ret; -} - -/* Find or create a zeroing page marked being writeback. - * Return ERR_PTR on error, NULL to indicate skip this page and page itself - * to indicate write out. - */ -static struct page * -bl_find_get_zeroing_page(struct inode *inode, pgoff_t index, - struct pnfs_block_extent *cow_read) -{ - struct page *page; - int locked = 0; - page = find_get_page(inode->i_mapping, index); - if (page) - goto check_page; - - page = find_or_create_page(inode->i_mapping, index, GFP_NOFS); - if (unlikely(!page)) { - dprintk("%s oom\n", __func__); - return ERR_PTR(-ENOMEM); - } - locked = 1; - -check_page: - /* PageDirty: Other will write this out - * PageWriteback: Other is writing this out - * PageUptodate: It was read before - */ - if (PageDirty(page) || PageWriteback(page)) { - print_page(page); - if (locked) - unlock_page(page); - page_cache_release(page); - return NULL; - } - - if (!locked) { - lock_page(page); - locked = 1; - goto check_page; - } - if (!PageUptodate(page)) { - /* New page, readin or zero it */ - init_page_for_write(page, cow_read); - } - set_page_writeback(page); - unlock_page(page); - - return page; -} - static enum pnfs_try_status bl_write_pagelist(struct nfs_pgio_header *header, int sync) { - int i, ret, npg_zero, pg_index, last = 0; + struct pnfs_block_layout *bl = BLK_LSEG2EXT(header->lseg); + struct pnfs_block_dev_map map = { .start = NFS4_MAX_UINT64 }; struct bio *bio = NULL; - struct pnfs_block_extent *be = NULL, *cow_read = NULL; - sector_t isect, last_isect = 0, extent_length = 0; + struct pnfs_block_extent be; + sector_t isect, extent_length = 0; struct parallel_io *par = NULL; loff_t offset = header->args.offset; size_t count = header->args.count; - unsigned int pg_offset, pg_len, saved_len; struct page **pages = header->args.pages; - struct page *page; - pgoff_t index; - u64 temp; - int npg_per_block = - NFS_SERVER(header->inode)->pnfs_blksize >> PAGE_CACHE_SHIFT; + int pg_index = pg_index = header->args.pgbase >> PAGE_CACHE_SHIFT; + unsigned int pg_len; + struct blk_plug plug; + int i; dprintk("%s enter, %Zu@%lld\n", __func__, count, offset); - if (header->dreq != NULL && - (!IS_ALIGNED(offset, NFS_SERVER(header->inode)->pnfs_blksize) || - !IS_ALIGNED(count, NFS_SERVER(header->inode)->pnfs_blksize))) { - dprintk("pnfsblock nonblock aligned DIO writes. Resend MDS\n"); - goto out_mds; - } /* At this point, header->page_aray is a (sequential) list of nfs_pages. * We want to write each, and if there is an error set pnfs_error * to have it redone using nfs. */ par = alloc_parallel(header); if (!par) - goto out_mds; + return PNFS_NOT_ATTEMPTED; par->pnfs_callback = bl_end_par_io_write; - /* At this point, have to be more careful with error handling */ - isect = (sector_t) ((offset & (long)PAGE_CACHE_MASK) >> SECTOR_SHIFT); - be = bl_find_get_extent(BLK_LSEG2EXT(header->lseg), isect, &cow_read); - if (!be || !is_writable(be, isect)) { - dprintk("%s no matching extents!\n", __func__); - goto out_mds; - } + blk_start_plug(&plug); - /* First page inside INVALID extent */ - if (be->be_state == PNFS_BLOCK_INVALID_DATA) { - if (likely(!bl_push_one_short_extent(be->be_inval))) - par->bse_count++; - else - goto out_mds; - temp = offset >> PAGE_CACHE_SHIFT; - npg_zero = do_div(temp, npg_per_block); - isect = (sector_t) (((offset - npg_zero * PAGE_CACHE_SIZE) & - (long)PAGE_CACHE_MASK) >> SECTOR_SHIFT); - extent_length = be->be_length - (isect - be->be_f_offset); - -fill_invalid_ext: - dprintk("%s need to zero %d pages\n", __func__, npg_zero); - for (;npg_zero > 0; npg_zero--) { - if (bl_is_sector_init(be->be_inval, isect)) { - dprintk("isect %llu already init\n", - (unsigned long long)isect); - goto next_page; - } - /* page ref released in bl_end_io_write_zero */ - index = isect >> PAGE_CACHE_SECTOR_SHIFT; - dprintk("%s zero %dth page: index %lu isect %llu\n", - __func__, npg_zero, index, - (unsigned long long)isect); - page = bl_find_get_zeroing_page(header->inode, index, - cow_read); - if (unlikely(IS_ERR(page))) { - header->pnfs_error = PTR_ERR(page); - goto out; - } else if (page == NULL) - goto next_page; - - ret = bl_mark_sectors_init(be->be_inval, isect, - PAGE_CACHE_SECTORS); - if (unlikely(ret)) { - dprintk("%s bl_mark_sectors_init fail %d\n", - __func__, ret); - end_page_writeback(page); - page_cache_release(page); - header->pnfs_error = ret; - goto out; - } - if (likely(!bl_push_one_short_extent(be->be_inval))) - par->bse_count++; - else { - end_page_writeback(page); - page_cache_release(page); - header->pnfs_error = -ENOMEM; - goto out; - } - /* FIXME: This should be done in bi_end_io */ - mark_extents_written(BLK_LSEG2EXT(header->lseg), - page->index << PAGE_CACHE_SHIFT, - PAGE_CACHE_SIZE); - - bio = bl_add_page_to_bio(bio, npg_zero, WRITE, - isect, page, be, - bl_end_io_write_zero, par); - if (IS_ERR(bio)) { - header->pnfs_error = PTR_ERR(bio); - bio = NULL; - goto out; - } -next_page: - isect += PAGE_CACHE_SECTORS; - extent_length -= PAGE_CACHE_SECTORS; - } - if (last) - goto write_done; - } - bio = bl_submit_bio(WRITE, bio); + /* we always write out the whole page */ + offset = offset & (loff_t)PAGE_CACHE_MASK; + isect = offset >> SECTOR_SHIFT; - /* Middle pages */ - pg_index = header->args.pgbase >> PAGE_CACHE_SHIFT; for (i = pg_index; i < header->page_array.npages; i++) { - if (!extent_length) { + if (extent_length <= 0) { /* We've used up the previous extent */ - bl_put_extent(be); - bl_put_extent(cow_read); bio = bl_submit_bio(WRITE, bio); /* Get the next one */ - be = bl_find_get_extent(BLK_LSEG2EXT(header->lseg), - isect, &cow_read); - if (!be || !is_writable(be, isect)) { + if (!ext_tree_lookup(bl, isect, &be, true)) { header->pnfs_error = -EINVAL; goto out; } - if (be->be_state == PNFS_BLOCK_INVALID_DATA) { - if (likely(!bl_push_one_short_extent( - be->be_inval))) - par->bse_count++; - else { - header->pnfs_error = -ENOMEM; - goto out; - } - } - extent_length = be->be_length - - (isect - be->be_f_offset); - } - - dprintk("%s offset %lld count %Zu\n", __func__, offset, count); - pg_offset = offset & ~PAGE_CACHE_MASK; - if (pg_offset + count > PAGE_CACHE_SIZE) - pg_len = PAGE_CACHE_SIZE - pg_offset; - else - pg_len = count; - - saved_len = pg_len; - if (be->be_state == PNFS_BLOCK_INVALID_DATA && - !bl_is_sector_init(be->be_inval, isect)) { - ret = bl_read_partial_page_sync(pages[i], cow_read, - pg_offset, pg_len, true); - if (ret) { - dprintk("%s bl_read_partial_page_sync fail %d\n", - __func__, ret); - header->pnfs_error = ret; - goto out; - } - - ret = bl_mark_sectors_init(be->be_inval, isect, - PAGE_CACHE_SECTORS); - if (unlikely(ret)) { - dprintk("%s bl_mark_sectors_init fail %d\n", - __func__, ret); - header->pnfs_error = ret; - goto out; - } - /* Expand to full page write */ - pg_offset = 0; - pg_len = PAGE_CACHE_SIZE; - } else if ((pg_offset & (SECTOR_SIZE - 1)) || - (pg_len & (SECTOR_SIZE - 1))){ - /* ahh, nasty case. We have to do sync full sector - * read-modify-write cycles. - */ - unsigned int saved_offset = pg_offset; - ret = bl_read_partial_page_sync(pages[i], be, pg_offset, - pg_len, false); - pg_offset = round_down(pg_offset, SECTOR_SIZE); - pg_len = round_up(saved_offset + pg_len, SECTOR_SIZE) - - pg_offset; + extent_length = be.be_length - (isect - be.be_f_offset); } - + pg_len = PAGE_CACHE_SIZE; bio = do_add_page_to_bio(bio, header->page_array.npages - i, - WRITE, - isect, pages[i], be, + WRITE, isect, pages[i], &map, &be, bl_end_io_write, par, - pg_offset, pg_len); + 0, &pg_len); if (IS_ERR(bio)) { header->pnfs_error = PTR_ERR(bio); bio = NULL; goto out; } - offset += saved_len; - count -= saved_len; - isect += PAGE_CACHE_SECTORS; - last_isect = isect; - extent_length -= PAGE_CACHE_SECTORS; - } - /* Last page inside INVALID extent */ - if (be->be_state == PNFS_BLOCK_INVALID_DATA) { - bio = bl_submit_bio(WRITE, bio); - temp = last_isect >> PAGE_CACHE_SECTOR_SHIFT; - npg_zero = npg_per_block - do_div(temp, npg_per_block); - if (npg_zero < npg_per_block) { - last = 1; - goto fill_invalid_ext; - } + offset += pg_len; + count -= pg_len; + isect += (pg_len >> SECTOR_SHIFT); + extent_length -= (pg_len >> SECTOR_SHIFT); } -write_done: header->res.count = header->args.count; out: - bl_put_extent(be); - bl_put_extent(cow_read); bl_submit_bio(WRITE, bio); + blk_finish_plug(&plug); put_parallel(par); return PNFS_ATTEMPTED; -out_mds: - bl_put_extent(be); - bl_put_extent(cow_read); - kfree(par); - return PNFS_NOT_ATTEMPTED; -} - -/* FIXME - range ignored */ -static void -release_extents(struct pnfs_block_layout *bl, struct pnfs_layout_range *range) -{ - int i; - struct pnfs_block_extent *be; - - spin_lock(&bl->bl_ext_lock); - for (i = 0; i < EXTENT_LISTS; i++) { - while (!list_empty(&bl->bl_extents[i])) { - be = list_first_entry(&bl->bl_extents[i], - struct pnfs_block_extent, - be_node); - list_del(&be->be_node); - bl_put_extent(be); - } - } - spin_unlock(&bl->bl_ext_lock); -} - -static void -release_inval_marks(struct pnfs_inval_markings *marks) -{ - struct pnfs_inval_tracking *pos, *temp; - struct pnfs_block_short_extent *se, *stemp; - - list_for_each_entry_safe(pos, temp, &marks->im_tree.mtt_stub, it_link) { - list_del(&pos->it_link); - kfree(pos); - } - - list_for_each_entry_safe(se, stemp, &marks->im_extents, bse_node) { - list_del(&se->bse_node); - kfree(se); - } - return; } static void bl_free_layout_hdr(struct pnfs_layout_hdr *lo) { struct pnfs_block_layout *bl = BLK_LO2EXT(lo); + int err; dprintk("%s enter\n", __func__); - release_extents(bl, NULL); - release_inval_marks(&bl->bl_inval); + + err = ext_tree_remove(bl, true, 0, LLONG_MAX); + WARN_ON(err); + kfree(bl); } @@ -960,14 +460,11 @@ static struct pnfs_layout_hdr *bl_alloc_layout_hdr(struct inode *inode, bl = kzalloc(sizeof(*bl), gfp_flags); if (!bl) return NULL; + + bl->bl_ext_rw = RB_ROOT; + bl->bl_ext_ro = RB_ROOT; spin_lock_init(&bl->bl_ext_lock); - INIT_LIST_HEAD(&bl->bl_extents[0]); - INIT_LIST_HEAD(&bl->bl_extents[1]); - INIT_LIST_HEAD(&bl->bl_commit); - INIT_LIST_HEAD(&bl->bl_committing); - bl->bl_count = 0; - bl->bl_blocksize = NFS_SERVER(inode)->pnfs_blksize >> SECTOR_SHIFT; - BL_INIT_INVAL_MARKS(&bl->bl_inval, bl->bl_blocksize); + return &bl->bl_layout; } @@ -977,215 +474,318 @@ static void bl_free_lseg(struct pnfs_layout_segment *lseg) kfree(lseg); } -/* We pretty much ignore lseg, and store all data layout wide, so we - * can correctly merge. - */ -static struct pnfs_layout_segment *bl_alloc_lseg(struct pnfs_layout_hdr *lo, - struct nfs4_layoutget_res *lgr, - gfp_t gfp_flags) -{ - struct pnfs_layout_segment *lseg; - int status; +/* Tracks info needed to ensure extents in layout obey constraints of spec */ +struct layout_verification { + u32 mode; /* R or RW */ + u64 start; /* Expected start of next non-COW extent */ + u64 inval; /* Start of INVAL coverage */ + u64 cowread; /* End of COW read coverage */ +}; - dprintk("%s enter\n", __func__); - lseg = kzalloc(sizeof(*lseg), gfp_flags); - if (!lseg) - return ERR_PTR(-ENOMEM); - status = nfs4_blk_process_layoutget(lo, lgr, gfp_flags); - if (status) { - /* We don't want to call the full-blown bl_free_lseg, - * since on error extents were not touched. - */ - kfree(lseg); - return ERR_PTR(status); +/* Verify the extent meets the layout requirements of the pnfs-block draft, + * section 2.3.1. + */ +static int verify_extent(struct pnfs_block_extent *be, + struct layout_verification *lv) +{ + if (lv->mode == IOMODE_READ) { + if (be->be_state == PNFS_BLOCK_READWRITE_DATA || + be->be_state == PNFS_BLOCK_INVALID_DATA) + return -EIO; + if (be->be_f_offset != lv->start) + return -EIO; + lv->start += be->be_length; + return 0; } - return lseg; + /* lv->mode == IOMODE_RW */ + if (be->be_state == PNFS_BLOCK_READWRITE_DATA) { + if (be->be_f_offset != lv->start) + return -EIO; + if (lv->cowread > lv->start) + return -EIO; + lv->start += be->be_length; + lv->inval = lv->start; + return 0; + } else if (be->be_state == PNFS_BLOCK_INVALID_DATA) { + if (be->be_f_offset != lv->start) + return -EIO; + lv->start += be->be_length; + return 0; + } else if (be->be_state == PNFS_BLOCK_READ_DATA) { + if (be->be_f_offset > lv->start) + return -EIO; + if (be->be_f_offset < lv->inval) + return -EIO; + if (be->be_f_offset < lv->cowread) + return -EIO; + /* It looks like you might want to min this with lv->start, + * but you really don't. + */ + lv->inval = lv->inval + be->be_length; + lv->cowread = be->be_f_offset + be->be_length; + return 0; + } else + return -EIO; } -static void -bl_encode_layoutcommit(struct pnfs_layout_hdr *lo, struct xdr_stream *xdr, - const struct nfs4_layoutcommit_args *arg) +static int decode_sector_number(__be32 **rp, sector_t *sp) { - dprintk("%s enter\n", __func__); - encode_pnfs_block_layoutupdate(BLK_LO2EXT(lo), xdr, arg); + uint64_t s; + + *rp = xdr_decode_hyper(*rp, &s); + if (s & 0x1ff) { + printk(KERN_WARNING "NFS: %s: sector not aligned\n", __func__); + return -1; + } + *sp = s >> SECTOR_SHIFT; + return 0; } -static void -bl_cleanup_layoutcommit(struct nfs4_layoutcommit_data *lcdata) +static int +bl_alloc_extent(struct xdr_stream *xdr, struct pnfs_layout_hdr *lo, + struct layout_verification *lv, struct list_head *extents, + gfp_t gfp_mask) { - struct pnfs_layout_hdr *lo = NFS_I(lcdata->args.inode)->layout; + struct pnfs_block_extent *be; + struct nfs4_deviceid id; + int error; + __be32 *p; - dprintk("%s enter\n", __func__); - clean_pnfs_block_layoutupdate(BLK_LO2EXT(lo), &lcdata->args, lcdata->res.status); -} + p = xdr_inline_decode(xdr, 28 + NFS4_DEVICEID4_SIZE); + if (!p) + return -EIO; -static void free_blk_mountid(struct block_mount_id *mid) -{ - if (mid) { - struct pnfs_block_dev *dev, *tmp; + be = kzalloc(sizeof(*be), GFP_NOFS); + if (!be) + return -ENOMEM; - /* No need to take bm_lock as we are last user freeing bm_devlist */ - list_for_each_entry_safe(dev, tmp, &mid->bm_devlist, bm_node) { - list_del(&dev->bm_node); - bl_free_block_dev(dev); - } - kfree(mid); + memcpy(&id, p, NFS4_DEVICEID4_SIZE); + p += XDR_QUADLEN(NFS4_DEVICEID4_SIZE); + + error = -EIO; + be->be_device = nfs4_find_get_deviceid(NFS_SERVER(lo->plh_inode), &id, + lo->plh_lc_cred, gfp_mask); + if (!be->be_device) + goto out_free_be; + + /* + * The next three values are read in as bytes, but stored in the + * extent structure in 512-byte granularity. + */ + if (decode_sector_number(&p, &be->be_f_offset) < 0) + goto out_put_deviceid; + if (decode_sector_number(&p, &be->be_length) < 0) + goto out_put_deviceid; + if (decode_sector_number(&p, &be->be_v_offset) < 0) + goto out_put_deviceid; + be->be_state = be32_to_cpup(p++); + + error = verify_extent(be, lv); + if (error) { + dprintk("%s: extent verification failed\n", __func__); + goto out_put_deviceid; } + + list_add_tail(&be->be_list, extents); + return 0; + +out_put_deviceid: + nfs4_put_deviceid_node(be->be_device); +out_free_be: + kfree(be); + return error; } -/* This is mostly copied from the filelayout_get_device_info function. - * It seems much of this should be at the generic pnfs level. - */ -static struct pnfs_block_dev * -nfs4_blk_get_deviceinfo(struct nfs_server *server, const struct nfs_fh *fh, - struct nfs4_deviceid *d_id) +static struct pnfs_layout_segment * +bl_alloc_lseg(struct pnfs_layout_hdr *lo, struct nfs4_layoutget_res *lgr, + gfp_t gfp_mask) { - struct pnfs_device *dev; - struct pnfs_block_dev *rv; - u32 max_resp_sz; - int max_pages; - struct page **pages = NULL; - int i, rc; + struct layout_verification lv = { + .mode = lgr->range.iomode, + .start = lgr->range.offset >> SECTOR_SHIFT, + .inval = lgr->range.offset >> SECTOR_SHIFT, + .cowread = lgr->range.offset >> SECTOR_SHIFT, + }; + struct pnfs_block_layout *bl = BLK_LO2EXT(lo); + struct pnfs_layout_segment *lseg; + struct xdr_buf buf; + struct xdr_stream xdr; + struct page *scratch; + int status, i; + uint32_t count; + __be32 *p; + LIST_HEAD(extents); + + dprintk("---> %s\n", __func__); + + lseg = kzalloc(sizeof(*lseg), gfp_mask); + if (!lseg) + return ERR_PTR(-ENOMEM); + + status = -ENOMEM; + scratch = alloc_page(gfp_mask); + if (!scratch) + goto out; + + xdr_init_decode_pages(&xdr, &buf, + lgr->layoutp->pages, lgr->layoutp->len); + xdr_set_scratch_buffer(&xdr, page_address(scratch), PAGE_SIZE); + + status = -EIO; + p = xdr_inline_decode(&xdr, 4); + if (unlikely(!p)) + goto out_free_scratch; + + count = be32_to_cpup(p++); + dprintk("%s: number of extents %d\n", __func__, count); /* - * Use the session max response size as the basis for setting - * GETDEVICEINFO's maxcount + * Decode individual extents, putting them in temporary staging area + * until whole layout is decoded to make error recovery easier. */ - max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; - max_pages = nfs_page_array_len(0, max_resp_sz); - dprintk("%s max_resp_sz %u max_pages %d\n", - __func__, max_resp_sz, max_pages); - - dev = kmalloc(sizeof(*dev), GFP_NOFS); - if (!dev) { - dprintk("%s kmalloc failed\n", __func__); - return ERR_PTR(-ENOMEM); + for (i = 0; i < count; i++) { + status = bl_alloc_extent(&xdr, lo, &lv, &extents, gfp_mask); + if (status) + goto process_extents; } - pages = kcalloc(max_pages, sizeof(struct page *), GFP_NOFS); - if (pages == NULL) { - kfree(dev); - return ERR_PTR(-ENOMEM); + if (lgr->range.offset + lgr->range.length != + lv.start << SECTOR_SHIFT) { + dprintk("%s Final length mismatch\n", __func__); + status = -EIO; + goto process_extents; } - for (i = 0; i < max_pages; i++) { - pages[i] = alloc_page(GFP_NOFS); - if (!pages[i]) { - rv = ERR_PTR(-ENOMEM); - goto out_free; - } + + if (lv.start < lv.cowread) { + dprintk("%s Final uncovered COW extent\n", __func__); + status = -EIO; } - memcpy(&dev->dev_id, d_id, sizeof(*d_id)); - dev->layout_type = LAYOUT_BLOCK_VOLUME; - dev->pages = pages; - dev->pgbase = 0; - dev->pglen = PAGE_SIZE * max_pages; - dev->mincount = 0; - dev->maxcount = max_resp_sz - nfs41_maxgetdevinfo_overhead; - - dprintk("%s: dev_id: %s\n", __func__, dev->dev_id.data); - rc = nfs4_proc_getdeviceinfo(server, dev, NULL); - dprintk("%s getdevice info returns %d\n", __func__, rc); - if (rc) { - rv = ERR_PTR(rc); - goto out_free; +process_extents: + while (!list_empty(&extents)) { + struct pnfs_block_extent *be = + list_first_entry(&extents, struct pnfs_block_extent, + be_list); + list_del(&be->be_list); + + if (!status) + status = ext_tree_insert(bl, be); + + if (status) { + nfs4_put_deviceid_node(be->be_device); + kfree(be); + } } - rv = nfs4_blk_decode_device(server, dev); - out_free: - for (i = 0; i < max_pages; i++) - __free_page(pages[i]); - kfree(pages); - kfree(dev); - return rv; +out_free_scratch: + __free_page(scratch); +out: + dprintk("%s returns %d\n", __func__, status); + if (status) { + kfree(lseg); + return ERR_PTR(status); + } + return lseg; } -static int -bl_set_layoutdriver(struct nfs_server *server, const struct nfs_fh *fh) +static void +bl_return_range(struct pnfs_layout_hdr *lo, + struct pnfs_layout_range *range) { - struct block_mount_id *b_mt_id = NULL; - struct pnfs_devicelist *dlist = NULL; - struct pnfs_block_dev *bdev; - LIST_HEAD(block_disklist); - int status, i; - - dprintk("%s enter\n", __func__); + struct pnfs_block_layout *bl = BLK_LO2EXT(lo); + sector_t offset = range->offset >> SECTOR_SHIFT, end; - if (server->pnfs_blksize == 0) { - dprintk("%s Server did not return blksize\n", __func__); - return -EINVAL; - } - b_mt_id = kzalloc(sizeof(struct block_mount_id), GFP_NOFS); - if (!b_mt_id) { - status = -ENOMEM; - goto out_error; - } - /* Initialize nfs4 block layout mount id */ - spin_lock_init(&b_mt_id->bm_lock); - INIT_LIST_HEAD(&b_mt_id->bm_devlist); - - dlist = kmalloc(sizeof(struct pnfs_devicelist), GFP_NOFS); - if (!dlist) { - status = -ENOMEM; - goto out_error; + if (range->offset % 8) { + dprintk("%s: offset %lld not block size aligned\n", + __func__, range->offset); + return; } - dlist->eof = 0; - while (!dlist->eof) { - status = nfs4_proc_getdevicelist(server, fh, dlist); - if (status) - goto out_error; - dprintk("%s GETDEVICELIST numdevs=%i, eof=%i\n", - __func__, dlist->num_devs, dlist->eof); - for (i = 0; i < dlist->num_devs; i++) { - bdev = nfs4_blk_get_deviceinfo(server, fh, - &dlist->dev_id[i]); - if (IS_ERR(bdev)) { - status = PTR_ERR(bdev); - goto out_error; - } - spin_lock(&b_mt_id->bm_lock); - list_add(&bdev->bm_node, &b_mt_id->bm_devlist); - spin_unlock(&b_mt_id->bm_lock); + + if (range->length != NFS4_MAX_UINT64) { + if (range->length % 8) { + dprintk("%s: length %lld not block size aligned\n", + __func__, range->length); + return; } - } - dprintk("%s SUCCESS\n", __func__); - server->pnfs_ld_data = b_mt_id; - out_return: - kfree(dlist); - return status; + end = offset + (range->length >> SECTOR_SHIFT); + } else { + end = round_down(NFS4_MAX_UINT64, PAGE_SIZE); + } - out_error: - free_blk_mountid(b_mt_id); - goto out_return; + ext_tree_remove(bl, range->iomode & IOMODE_RW, offset, end); } static int -bl_clear_layoutdriver(struct nfs_server *server) +bl_prepare_layoutcommit(struct nfs4_layoutcommit_args *arg) +{ + return ext_tree_prepare_commit(arg); +} + +static void +bl_cleanup_layoutcommit(struct nfs4_layoutcommit_data *lcdata) { - struct block_mount_id *b_mt_id = server->pnfs_ld_data; + ext_tree_mark_committed(&lcdata->args, lcdata->res.status); +} +static int +bl_set_layoutdriver(struct nfs_server *server, const struct nfs_fh *fh) +{ dprintk("%s enter\n", __func__); - free_blk_mountid(b_mt_id); - dprintk("%s RETURNS\n", __func__); + + if (server->pnfs_blksize == 0) { + dprintk("%s Server did not return blksize\n", __func__); + return -EINVAL; + } + if (server->pnfs_blksize > PAGE_SIZE) { + printk(KERN_ERR "%s: pNFS blksize %d not supported.\n", + __func__, server->pnfs_blksize); + return -EINVAL; + } + return 0; } static bool -is_aligned_req(struct nfs_page *req, unsigned int alignment) +is_aligned_req(struct nfs_pageio_descriptor *pgio, + struct nfs_page *req, unsigned int alignment) { - return IS_ALIGNED(req->wb_offset, alignment) && - IS_ALIGNED(req->wb_bytes, alignment); + /* + * Always accept buffered writes, higher layers take care of the + * right alignment. + */ + if (pgio->pg_dreq == NULL) + return true; + + if (!IS_ALIGNED(req->wb_offset, alignment)) + return false; + + if (IS_ALIGNED(req->wb_bytes, alignment)) + return true; + + if (req_offset(req) + req->wb_bytes == i_size_read(pgio->pg_inode)) { + /* + * If the write goes up to the inode size, just write + * the full page. Data past the inode size is + * guaranteed to be zeroed by the higher level client + * code, and this behaviour is mandated by RFC 5663 + * section 2.3.2. + */ + return true; + } + + return false; } static void bl_pg_init_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *req) { - if (pgio->pg_dreq != NULL && - !is_aligned_req(req, SECTOR_SIZE)) + if (!is_aligned_req(pgio, req, SECTOR_SIZE)) { nfs_pageio_reset_read_mds(pgio); - else - pnfs_generic_pg_init_read(pgio, req); + return; + } + + pnfs_generic_pg_init_read(pgio, req); } /* @@ -1196,10 +796,8 @@ static size_t bl_pg_test_read(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, struct nfs_page *req) { - if (pgio->pg_dreq != NULL && - !is_aligned_req(req, SECTOR_SIZE)) + if (!is_aligned_req(pgio, req, SECTOR_SIZE)) return 0; - return pnfs_generic_pg_test(pgio, prev, req); } @@ -1229,19 +827,20 @@ static u64 pnfs_num_cont_bytes(struct inode *inode, pgoff_t idx) static void bl_pg_init_write(struct nfs_pageio_descriptor *pgio, struct nfs_page *req) { - if (pgio->pg_dreq != NULL && - !is_aligned_req(req, PAGE_CACHE_SIZE)) { + u64 wb_size; + + if (!is_aligned_req(pgio, req, PAGE_SIZE)) { nfs_pageio_reset_write_mds(pgio); - } else { - u64 wb_size; - if (pgio->pg_dreq == NULL) - wb_size = pnfs_num_cont_bytes(pgio->pg_inode, - req->wb_index); - else - wb_size = nfs_dreq_bytes_left(pgio->pg_dreq); - - pnfs_generic_pg_init_write(pgio, req, wb_size); + return; } + + if (pgio->pg_dreq == NULL) + wb_size = pnfs_num_cont_bytes(pgio->pg_inode, + req->wb_index); + else + wb_size = nfs_dreq_bytes_left(pgio->pg_dreq); + + pnfs_generic_pg_init_write(pgio, req, wb_size); } /* @@ -1252,10 +851,8 @@ static size_t bl_pg_test_write(struct nfs_pageio_descriptor *pgio, struct nfs_page *prev, struct nfs_page *req) { - if (pgio->pg_dreq != NULL && - !is_aligned_req(req, PAGE_CACHE_SIZE)) + if (!is_aligned_req(pgio, req, PAGE_SIZE)) return 0; - return pnfs_generic_pg_test(pgio, prev, req); } @@ -1275,146 +872,24 @@ static struct pnfs_layoutdriver_type blocklayout_type = { .id = LAYOUT_BLOCK_VOLUME, .name = "LAYOUT_BLOCK_VOLUME", .owner = THIS_MODULE, + .flags = PNFS_LAYOUTRET_ON_SETATTR | + PNFS_READ_WHOLE_PAGE, .read_pagelist = bl_read_pagelist, .write_pagelist = bl_write_pagelist, .alloc_layout_hdr = bl_alloc_layout_hdr, .free_layout_hdr = bl_free_layout_hdr, .alloc_lseg = bl_alloc_lseg, .free_lseg = bl_free_lseg, - .encode_layoutcommit = bl_encode_layoutcommit, + .return_range = bl_return_range, + .prepare_layoutcommit = bl_prepare_layoutcommit, .cleanup_layoutcommit = bl_cleanup_layoutcommit, .set_layoutdriver = bl_set_layoutdriver, - .clear_layoutdriver = bl_clear_layoutdriver, + .alloc_deviceid_node = bl_alloc_deviceid_node, + .free_deviceid_node = bl_free_deviceid_node, .pg_read_ops = &bl_pg_read_ops, .pg_write_ops = &bl_pg_write_ops, }; -static const struct rpc_pipe_ops bl_upcall_ops = { - .upcall = rpc_pipe_generic_upcall, - .downcall = bl_pipe_downcall, - .destroy_msg = bl_pipe_destroy_msg, -}; - -static struct dentry *nfs4blocklayout_register_sb(struct super_block *sb, - struct rpc_pipe *pipe) -{ - struct dentry *dir, *dentry; - - dir = rpc_d_lookup_sb(sb, NFS_PIPE_DIRNAME); - if (dir == NULL) - return ERR_PTR(-ENOENT); - dentry = rpc_mkpipe_dentry(dir, "blocklayout", NULL, pipe); - dput(dir); - return dentry; -} - -static void nfs4blocklayout_unregister_sb(struct super_block *sb, - struct rpc_pipe *pipe) -{ - if (pipe->dentry) - rpc_unlink(pipe->dentry); -} - -static int rpc_pipefs_event(struct notifier_block *nb, unsigned long event, - void *ptr) -{ - struct super_block *sb = ptr; - struct net *net = sb->s_fs_info; - struct nfs_net *nn = net_generic(net, nfs_net_id); - struct dentry *dentry; - int ret = 0; - - if (!try_module_get(THIS_MODULE)) - return 0; - - if (nn->bl_device_pipe == NULL) { - module_put(THIS_MODULE); - return 0; - } - - switch (event) { - case RPC_PIPEFS_MOUNT: - dentry = nfs4blocklayout_register_sb(sb, nn->bl_device_pipe); - if (IS_ERR(dentry)) { - ret = PTR_ERR(dentry); - break; - } - nn->bl_device_pipe->dentry = dentry; - break; - case RPC_PIPEFS_UMOUNT: - if (nn->bl_device_pipe->dentry) - nfs4blocklayout_unregister_sb(sb, nn->bl_device_pipe); - break; - default: - ret = -ENOTSUPP; - break; - } - module_put(THIS_MODULE); - return ret; -} - -static struct notifier_block nfs4blocklayout_block = { - .notifier_call = rpc_pipefs_event, -}; - -static struct dentry *nfs4blocklayout_register_net(struct net *net, - struct rpc_pipe *pipe) -{ - struct super_block *pipefs_sb; - struct dentry *dentry; - - pipefs_sb = rpc_get_sb_net(net); - if (!pipefs_sb) - return NULL; - dentry = nfs4blocklayout_register_sb(pipefs_sb, pipe); - rpc_put_sb_net(net); - return dentry; -} - -static void nfs4blocklayout_unregister_net(struct net *net, - struct rpc_pipe *pipe) -{ - struct super_block *pipefs_sb; - - pipefs_sb = rpc_get_sb_net(net); - if (pipefs_sb) { - nfs4blocklayout_unregister_sb(pipefs_sb, pipe); - rpc_put_sb_net(net); - } -} - -static int nfs4blocklayout_net_init(struct net *net) -{ - struct nfs_net *nn = net_generic(net, nfs_net_id); - struct dentry *dentry; - - init_waitqueue_head(&nn->bl_wq); - nn->bl_device_pipe = rpc_mkpipe_data(&bl_upcall_ops, 0); - if (IS_ERR(nn->bl_device_pipe)) - return PTR_ERR(nn->bl_device_pipe); - dentry = nfs4blocklayout_register_net(net, nn->bl_device_pipe); - if (IS_ERR(dentry)) { - rpc_destroy_pipe_data(nn->bl_device_pipe); - return PTR_ERR(dentry); - } - nn->bl_device_pipe->dentry = dentry; - return 0; -} - -static void nfs4blocklayout_net_exit(struct net *net) -{ - struct nfs_net *nn = net_generic(net, nfs_net_id); - - nfs4blocklayout_unregister_net(net, nn->bl_device_pipe); - rpc_destroy_pipe_data(nn->bl_device_pipe); - nn->bl_device_pipe = NULL; -} - -static struct pernet_operations nfs4blocklayout_net_ops = { - .init = nfs4blocklayout_net_init, - .exit = nfs4blocklayout_net_exit, -}; - static int __init nfs4blocklayout_init(void) { int ret; @@ -1424,20 +899,14 @@ static int __init nfs4blocklayout_init(void) ret = pnfs_register_layoutdriver(&blocklayout_type); if (ret) goto out; - - ret = rpc_pipefs_notifier_register(&nfs4blocklayout_block); + ret = bl_init_pipefs(); if (ret) - goto out_remove; - ret = register_pernet_subsys(&nfs4blocklayout_net_ops); - if (ret) - goto out_notifier; -out: - return ret; + goto out_unregister; + return 0; -out_notifier: - rpc_pipefs_notifier_unregister(&nfs4blocklayout_block); -out_remove: +out_unregister: pnfs_unregister_layoutdriver(&blocklayout_type); +out: return ret; } @@ -1446,8 +915,7 @@ static void __exit nfs4blocklayout_exit(void) dprintk("%s: NFSv4 Block Layout Driver Unregistering...\n", __func__); - rpc_pipefs_notifier_unregister(&nfs4blocklayout_block); - unregister_pernet_subsys(&nfs4blocklayout_net_ops); + bl_cleanup_pipefs(); pnfs_unregister_layoutdriver(&blocklayout_type); } diff --git a/fs/nfs/blocklayout/blocklayout.h b/fs/nfs/blocklayout/blocklayout.h index 9838fb020473..92dca9e90d8d 100644 --- a/fs/nfs/blocklayout/blocklayout.h +++ b/fs/nfs/blocklayout/blocklayout.h @@ -44,105 +44,112 @@ #define PAGE_CACHE_SECTOR_SHIFT (PAGE_CACHE_SHIFT - SECTOR_SHIFT) #define SECTOR_SIZE (1 << SECTOR_SHIFT) -struct block_mount_id { - spinlock_t bm_lock; /* protects list */ - struct list_head bm_devlist; /* holds pnfs_block_dev */ -}; +struct pnfs_block_dev; -struct pnfs_block_dev { - struct list_head bm_node; - struct nfs4_deviceid bm_mdevid; /* associated devid */ - struct block_device *bm_mdev; /* meta device itself */ - struct net *net; +enum pnfs_block_volume_type { + PNFS_BLOCK_VOLUME_SIMPLE = 0, + PNFS_BLOCK_VOLUME_SLICE = 1, + PNFS_BLOCK_VOLUME_CONCAT = 2, + PNFS_BLOCK_VOLUME_STRIPE = 3, }; -enum exstate4 { - PNFS_BLOCK_READWRITE_DATA = 0, - PNFS_BLOCK_READ_DATA = 1, - PNFS_BLOCK_INVALID_DATA = 2, /* mapped, but data is invalid */ - PNFS_BLOCK_NONE_DATA = 3 /* unmapped, it's a hole */ +#define PNFS_BLOCK_MAX_UUIDS 4 +#define PNFS_BLOCK_MAX_DEVICES 64 + +/* + * Random upper cap for the uuid length to avoid unbounded allocation. + * Not actually limited by the protocol. + */ +#define PNFS_BLOCK_UUID_LEN 128 + + +struct pnfs_block_volume { + enum pnfs_block_volume_type type; + union { + struct { + int len; + int nr_sigs; + struct { + u64 offset; + u32 sig_len; + u8 sig[PNFS_BLOCK_UUID_LEN]; + } sigs[PNFS_BLOCK_MAX_UUIDS]; + } simple; + struct { + u64 start; + u64 len; + u32 volume; + } slice; + struct { + u32 volumes_count; + u32 volumes[PNFS_BLOCK_MAX_DEVICES]; + } concat; + struct { + u64 chunk_size; + u32 volumes_count; + u32 volumes[PNFS_BLOCK_MAX_DEVICES]; + } stripe; + }; }; -#define MY_MAX_TAGS (15) /* tag bitnums used must be less than this */ +struct pnfs_block_dev_map { + sector_t start; + sector_t len; -struct my_tree { - sector_t mtt_step_size; /* Internal sector alignment */ - struct list_head mtt_stub; /* Should be a radix tree */ + sector_t disk_offset; + struct block_device *bdev; }; -struct pnfs_inval_markings { - spinlock_t im_lock; - struct my_tree im_tree; /* Sectors that need LAYOUTCOMMIT */ - sector_t im_block_size; /* Server blocksize in sectors */ - struct list_head im_extents; /* Short extents for INVAL->RW conversion */ +struct pnfs_block_dev { + struct nfs4_deviceid_node node; + + u64 start; + u64 len; + + u32 nr_children; + struct pnfs_block_dev *children; + u64 chunk_size; + + struct block_device *bdev; + u64 disk_offset; + + bool (*map)(struct pnfs_block_dev *dev, u64 offset, + struct pnfs_block_dev_map *map); }; -struct pnfs_inval_tracking { - struct list_head it_link; - int it_sector; - int it_tags; +enum exstate4 { + PNFS_BLOCK_READWRITE_DATA = 0, + PNFS_BLOCK_READ_DATA = 1, + PNFS_BLOCK_INVALID_DATA = 2, /* mapped, but data is invalid */ + PNFS_BLOCK_NONE_DATA = 3 /* unmapped, it's a hole */ }; /* sector_t fields are all in 512-byte sectors */ struct pnfs_block_extent { - struct kref be_refcnt; - struct list_head be_node; /* link into lseg list */ - struct nfs4_deviceid be_devid; /* FIXME: could use device cache instead */ - struct block_device *be_mdev; + union { + struct rb_node be_node; + struct list_head be_list; + }; + struct nfs4_deviceid_node *be_device; sector_t be_f_offset; /* the starting offset in the file */ sector_t be_length; /* the size of the extent */ sector_t be_v_offset; /* the starting offset in the volume */ enum exstate4 be_state; /* the state of this extent */ - struct pnfs_inval_markings *be_inval; /* tracks INVAL->RW transition */ +#define EXTENT_WRITTEN 1 +#define EXTENT_COMMITTING 2 + unsigned int be_tag; }; -/* Shortened extent used by LAYOUTCOMMIT */ -struct pnfs_block_short_extent { - struct list_head bse_node; - struct nfs4_deviceid bse_devid; - struct block_device *bse_mdev; - sector_t bse_f_offset; /* the starting offset in the file */ - sector_t bse_length; /* the size of the extent */ -}; - -static inline void -BL_INIT_INVAL_MARKS(struct pnfs_inval_markings *marks, sector_t blocksize) -{ - spin_lock_init(&marks->im_lock); - INIT_LIST_HEAD(&marks->im_tree.mtt_stub); - INIT_LIST_HEAD(&marks->im_extents); - marks->im_block_size = blocksize; - marks->im_tree.mtt_step_size = min((sector_t)PAGE_CACHE_SECTORS, - blocksize); -} - -enum extentclass4 { - RW_EXTENT = 0, /* READWRTE and INVAL */ - RO_EXTENT = 1, /* READ and NONE */ - EXTENT_LISTS = 2, -}; - -static inline int bl_choose_list(enum exstate4 state) -{ - if (state == PNFS_BLOCK_READ_DATA || state == PNFS_BLOCK_NONE_DATA) - return RO_EXTENT; - else - return RW_EXTENT; -} +/* on the wire size of the extent */ +#define BL_EXTENT_SIZE (7 * sizeof(__be32) + NFS4_DEVICEID4_SIZE) struct pnfs_block_layout { - struct pnfs_layout_hdr bl_layout; - struct pnfs_inval_markings bl_inval; /* tracks INVAL->RW transition */ + struct pnfs_layout_hdr bl_layout; + struct rb_root bl_ext_rw; + struct rb_root bl_ext_ro; spinlock_t bl_ext_lock; /* Protects list manipulation */ - struct list_head bl_extents[EXTENT_LISTS]; /* R and RW extents */ - struct list_head bl_commit; /* Needs layout commit */ - struct list_head bl_committing; /* Layout committing */ - unsigned int bl_count; /* entries in bl_commit */ - sector_t bl_blocksize; /* Server blocksize in sectors */ }; -#define BLK_ID(lo) ((struct block_mount_id *)(NFS_SERVER(lo->plh_inode)->pnfs_ld_data)) - static inline struct pnfs_block_layout * BLK_LO2EXT(struct pnfs_layout_hdr *lo) { @@ -171,41 +178,27 @@ struct bl_msg_hdr { #define BL_DEVICE_REQUEST_PROC 0x1 /* User level process succeeds */ #define BL_DEVICE_REQUEST_ERR 0x2 /* User level process fails */ -/* blocklayoutdev.c */ -ssize_t bl_pipe_downcall(struct file *, const char __user *, size_t); -void bl_pipe_destroy_msg(struct rpc_pipe_msg *); -void nfs4_blkdev_put(struct block_device *bdev); -struct pnfs_block_dev *nfs4_blk_decode_device(struct nfs_server *server, - struct pnfs_device *dev); -int nfs4_blk_process_layoutget(struct pnfs_layout_hdr *lo, - struct nfs4_layoutget_res *lgr, gfp_t gfp_flags); - -/* blocklayoutdm.c */ -void bl_free_block_dev(struct pnfs_block_dev *bdev); - -/* extents.c */ -struct pnfs_block_extent * -bl_find_get_extent(struct pnfs_block_layout *bl, sector_t isect, - struct pnfs_block_extent **cow_read); -int bl_mark_sectors_init(struct pnfs_inval_markings *marks, - sector_t offset, sector_t length); -void bl_put_extent(struct pnfs_block_extent *be); -struct pnfs_block_extent *bl_alloc_extent(void); -int bl_is_sector_init(struct pnfs_inval_markings *marks, sector_t isect); -int encode_pnfs_block_layoutupdate(struct pnfs_block_layout *bl, - struct xdr_stream *xdr, - const struct nfs4_layoutcommit_args *arg); -void clean_pnfs_block_layoutupdate(struct pnfs_block_layout *bl, - const struct nfs4_layoutcommit_args *arg, - int status); -int bl_add_merge_extent(struct pnfs_block_layout *bl, - struct pnfs_block_extent *new); -int bl_mark_for_commit(struct pnfs_block_extent *be, - sector_t offset, sector_t length, - struct pnfs_block_short_extent *new); -int bl_push_one_short_extent(struct pnfs_inval_markings *marks); -struct pnfs_block_short_extent * -bl_pop_one_short_extent(struct pnfs_inval_markings *marks); -void bl_free_short_extents(struct pnfs_inval_markings *marks, int num_to_free); +/* dev.c */ +struct nfs4_deviceid_node *bl_alloc_deviceid_node(struct nfs_server *server, + struct pnfs_device *pdev, gfp_t gfp_mask); +void bl_free_deviceid_node(struct nfs4_deviceid_node *d); + +/* extent_tree.c */ +int ext_tree_insert(struct pnfs_block_layout *bl, + struct pnfs_block_extent *new); +int ext_tree_remove(struct pnfs_block_layout *bl, bool rw, sector_t start, + sector_t end); +int ext_tree_mark_written(struct pnfs_block_layout *bl, sector_t start, + sector_t len); +bool ext_tree_lookup(struct pnfs_block_layout *bl, sector_t isect, + struct pnfs_block_extent *ret, bool rw); +int ext_tree_prepare_commit(struct nfs4_layoutcommit_args *arg); +void ext_tree_mark_committed(struct nfs4_layoutcommit_args *arg, int status); + +/* rpc_pipefs.c */ +dev_t bl_resolve_deviceid(struct nfs_server *server, + struct pnfs_block_volume *b, gfp_t gfp_mask); +int __init bl_init_pipefs(void); +void __exit bl_cleanup_pipefs(void); #endif /* FS_NFS_NFS4BLOCKLAYOUT_H */ diff --git a/fs/nfs/blocklayout/blocklayoutdev.c b/fs/nfs/blocklayout/blocklayoutdev.c deleted file mode 100644 index 04303b5c9361..000000000000 --- a/fs/nfs/blocklayout/blocklayoutdev.c +++ /dev/null @@ -1,384 +0,0 @@ -/* - * linux/fs/nfs/blocklayout/blocklayoutdev.c - * - * Device operations for the pnfs nfs4 file layout driver. - * - * Copyright (c) 2006 The Regents of the University of Michigan. - * All rights reserved. - * - * Andy Adamson <andros@citi.umich.edu> - * Fred Isaman <iisaman@umich.edu> - * - * permission is granted to use, copy, create derivative works and - * redistribute this software and such derivative works for any purpose, - * so long as the name of the university of michigan is not used in - * any advertising or publicity pertaining to the use or distribution - * of this software without specific, written prior authorization. if - * the above copyright notice or any other identification of the - * university of michigan is included in any copy of any portion of - * this software, then the disclaimer below must also be included. - * - * this software is provided as is, without representation from the - * university of michigan as to its fitness for any purpose, and without - * warranty by the university of michigan of any kind, either express - * or implied, including without limitation the implied warranties of - * merchantability and fitness for a particular purpose. the regents - * of the university of michigan shall not be liable for any damages, - * including special, indirect, incidental, or consequential damages, - * with respect to any claim arising out or in connection with the use - * of the software, even if it has been or is hereafter advised of the - * possibility of such damages. - */ -#include <linux/module.h> -#include <linux/buffer_head.h> /* __bread */ - -#include <linux/genhd.h> -#include <linux/blkdev.h> -#include <linux/hash.h> - -#include "blocklayout.h" - -#define NFSDBG_FACILITY NFSDBG_PNFS_LD - -static int decode_sector_number(__be32 **rp, sector_t *sp) -{ - uint64_t s; - - *rp = xdr_decode_hyper(*rp, &s); - if (s & 0x1ff) { - printk(KERN_WARNING "NFS: %s: sector not aligned\n", __func__); - return -1; - } - *sp = s >> SECTOR_SHIFT; - return 0; -} - -/* - * Release the block device - */ -void nfs4_blkdev_put(struct block_device *bdev) -{ - dprintk("%s for device %d:%d\n", __func__, MAJOR(bdev->bd_dev), - MINOR(bdev->bd_dev)); - blkdev_put(bdev, FMODE_READ); -} - -ssize_t bl_pipe_downcall(struct file *filp, const char __user *src, - size_t mlen) -{ - struct nfs_net *nn = net_generic(filp->f_dentry->d_sb->s_fs_info, - nfs_net_id); - - if (mlen != sizeof (struct bl_dev_msg)) - return -EINVAL; - - if (copy_from_user(&nn->bl_mount_reply, src, mlen) != 0) - return -EFAULT; - - wake_up(&nn->bl_wq); - - return mlen; -} - -void bl_pipe_destroy_msg(struct rpc_pipe_msg *msg) -{ - struct bl_pipe_msg *bl_pipe_msg = container_of(msg, struct bl_pipe_msg, msg); - - if (msg->errno >= 0) - return; - wake_up(bl_pipe_msg->bl_wq); -} - -/* - * Decodes pnfs_block_deviceaddr4 which is XDR encoded in dev->dev_addr_buf. - */ -struct pnfs_block_dev * -nfs4_blk_decode_device(struct nfs_server *server, - struct pnfs_device *dev) -{ - struct pnfs_block_dev *rv; - struct block_device *bd = NULL; - struct bl_pipe_msg bl_pipe_msg; - struct rpc_pipe_msg *msg = &bl_pipe_msg.msg; - struct bl_msg_hdr bl_msg = { - .type = BL_DEVICE_MOUNT, - .totallen = dev->mincount, - }; - uint8_t *dataptr; - DECLARE_WAITQUEUE(wq, current); - int offset, len, i, rc; - struct net *net = server->nfs_client->cl_net; - struct nfs_net *nn = net_generic(net, nfs_net_id); - struct bl_dev_msg *reply = &nn->bl_mount_reply; - - dprintk("%s CREATING PIPEFS MESSAGE\n", __func__); - dprintk("%s: deviceid: %s, mincount: %d\n", __func__, dev->dev_id.data, - dev->mincount); - - bl_pipe_msg.bl_wq = &nn->bl_wq; - memset(msg, 0, sizeof(*msg)); - msg->data = kzalloc(sizeof(bl_msg) + dev->mincount, GFP_NOFS); - if (!msg->data) { - rv = ERR_PTR(-ENOMEM); - goto out; - } - - memcpy(msg->data, &bl_msg, sizeof(bl_msg)); - dataptr = (uint8_t *) msg->data; - len = dev->mincount; - offset = sizeof(bl_msg); - for (i = 0; len > 0; i++) { - memcpy(&dataptr[offset], page_address(dev->pages[i]), - len < PAGE_CACHE_SIZE ? len : PAGE_CACHE_SIZE); - len -= PAGE_CACHE_SIZE; - offset += PAGE_CACHE_SIZE; - } - msg->len = sizeof(bl_msg) + dev->mincount; - - dprintk("%s CALLING USERSPACE DAEMON\n", __func__); - add_wait_queue(&nn->bl_wq, &wq); - rc = rpc_queue_upcall(nn->bl_device_pipe, msg); - if (rc < 0) { - remove_wait_queue(&nn->bl_wq, &wq); - rv = ERR_PTR(rc); - goto out; - } - - set_current_state(TASK_UNINTERRUPTIBLE); - schedule(); - __set_current_state(TASK_RUNNING); - remove_wait_queue(&nn->bl_wq, &wq); - - if (reply->status != BL_DEVICE_REQUEST_PROC) { - dprintk("%s failed to open device: %d\n", - __func__, reply->status); - rv = ERR_PTR(-EINVAL); - goto out; - } - - bd = blkdev_get_by_dev(MKDEV(reply->major, reply->minor), - FMODE_READ, NULL); - if (IS_ERR(bd)) { - dprintk("%s failed to open device : %ld\n", __func__, - PTR_ERR(bd)); - rv = ERR_CAST(bd); - goto out; - } - - rv = kzalloc(sizeof(*rv), GFP_NOFS); - if (!rv) { - rv = ERR_PTR(-ENOMEM); - goto out; - } - - rv->bm_mdev = bd; - memcpy(&rv->bm_mdevid, &dev->dev_id, sizeof(struct nfs4_deviceid)); - rv->net = net; - dprintk("%s Created device %s with bd_block_size %u\n", - __func__, - bd->bd_disk->disk_name, - bd->bd_block_size); - -out: - kfree(msg->data); - return rv; -} - -/* Map deviceid returned by the server to constructed block_device */ -static struct block_device *translate_devid(struct pnfs_layout_hdr *lo, - struct nfs4_deviceid *id) -{ - struct block_device *rv = NULL; - struct block_mount_id *mid; - struct pnfs_block_dev *dev; - - dprintk("%s enter, lo=%p, id=%p\n", __func__, lo, id); - mid = BLK_ID(lo); - spin_lock(&mid->bm_lock); - list_for_each_entry(dev, &mid->bm_devlist, bm_node) { - if (memcmp(id->data, dev->bm_mdevid.data, - NFS4_DEVICEID4_SIZE) == 0) { - rv = dev->bm_mdev; - goto out; - } - } - out: - spin_unlock(&mid->bm_lock); - dprintk("%s returning %p\n", __func__, rv); - return rv; -} - -/* Tracks info needed to ensure extents in layout obey constraints of spec */ -struct layout_verification { - u32 mode; /* R or RW */ - u64 start; /* Expected start of next non-COW extent */ - u64 inval; /* Start of INVAL coverage */ - u64 cowread; /* End of COW read coverage */ -}; - -/* Verify the extent meets the layout requirements of the pnfs-block draft, - * section 2.3.1. - */ -static int verify_extent(struct pnfs_block_extent *be, - struct layout_verification *lv) -{ - if (lv->mode == IOMODE_READ) { - if (be->be_state == PNFS_BLOCK_READWRITE_DATA || - be->be_state == PNFS_BLOCK_INVALID_DATA) - return -EIO; - if (be->be_f_offset != lv->start) - return -EIO; - lv->start += be->be_length; - return 0; - } - /* lv->mode == IOMODE_RW */ - if (be->be_state == PNFS_BLOCK_READWRITE_DATA) { - if (be->be_f_offset != lv->start) - return -EIO; - if (lv->cowread > lv->start) - return -EIO; - lv->start += be->be_length; - lv->inval = lv->start; - return 0; - } else if (be->be_state == PNFS_BLOCK_INVALID_DATA) { - if (be->be_f_offset != lv->start) - return -EIO; - lv->start += be->be_length; - return 0; - } else if (be->be_state == PNFS_BLOCK_READ_DATA) { - if (be->be_f_offset > lv->start) - return -EIO; - if (be->be_f_offset < lv->inval) - return -EIO; - if (be->be_f_offset < lv->cowread) - return -EIO; - /* It looks like you might want to min this with lv->start, - * but you really don't. - */ - lv->inval = lv->inval + be->be_length; - lv->cowread = be->be_f_offset + be->be_length; - return 0; - } else - return -EIO; -} - -/* XDR decode pnfs_block_layout4 structure */ -int -nfs4_blk_process_layoutget(struct pnfs_layout_hdr *lo, - struct nfs4_layoutget_res *lgr, gfp_t gfp_flags) -{ - struct pnfs_block_layout *bl = BLK_LO2EXT(lo); - int i, status = -EIO; - uint32_t count; - struct pnfs_block_extent *be = NULL, *save; - struct xdr_stream stream; - struct xdr_buf buf; - struct page *scratch; - __be32 *p; - struct layout_verification lv = { - .mode = lgr->range.iomode, - .start = lgr->range.offset >> SECTOR_SHIFT, - .inval = lgr->range.offset >> SECTOR_SHIFT, - .cowread = lgr->range.offset >> SECTOR_SHIFT, - }; - LIST_HEAD(extents); - - dprintk("---> %s\n", __func__); - - scratch = alloc_page(gfp_flags); - if (!scratch) - return -ENOMEM; - - xdr_init_decode_pages(&stream, &buf, lgr->layoutp->pages, lgr->layoutp->len); - xdr_set_scratch_buffer(&stream, page_address(scratch), PAGE_SIZE); - - p = xdr_inline_decode(&stream, 4); - if (unlikely(!p)) - goto out_err; - - count = be32_to_cpup(p++); - - dprintk("%s enter, number of extents %i\n", __func__, count); - p = xdr_inline_decode(&stream, (28 + NFS4_DEVICEID4_SIZE) * count); - if (unlikely(!p)) - goto out_err; - - /* Decode individual extents, putting them in temporary - * staging area until whole layout is decoded to make error - * recovery easier. - */ - for (i = 0; i < count; i++) { - be = bl_alloc_extent(); - if (!be) { - status = -ENOMEM; - goto out_err; - } - memcpy(&be->be_devid, p, NFS4_DEVICEID4_SIZE); - p += XDR_QUADLEN(NFS4_DEVICEID4_SIZE); - be->be_mdev = translate_devid(lo, &be->be_devid); - if (!be->be_mdev) - goto out_err; - - /* The next three values are read in as bytes, - * but stored as 512-byte sector lengths - */ - if (decode_sector_number(&p, &be->be_f_offset) < 0) - goto out_err; - if (decode_sector_number(&p, &be->be_length) < 0) - goto out_err; - if (decode_sector_number(&p, &be->be_v_offset) < 0) - goto out_err; - be->be_state = be32_to_cpup(p++); - if (be->be_state == PNFS_BLOCK_INVALID_DATA) - be->be_inval = &bl->bl_inval; - if (verify_extent(be, &lv)) { - dprintk("%s verify failed\n", __func__); - goto out_err; - } - list_add_tail(&be->be_node, &extents); - } - if (lgr->range.offset + lgr->range.length != - lv.start << SECTOR_SHIFT) { - dprintk("%s Final length mismatch\n", __func__); - be = NULL; - goto out_err; - } - if (lv.start < lv.cowread) { - dprintk("%s Final uncovered COW extent\n", __func__); - be = NULL; - goto out_err; - } - /* Extents decoded properly, now try to merge them in to - * existing layout extents. - */ - spin_lock(&bl->bl_ext_lock); - list_for_each_entry_safe(be, save, &extents, be_node) { - list_del(&be->be_node); - status = bl_add_merge_extent(bl, be); - if (status) { - spin_unlock(&bl->bl_ext_lock); - /* This is a fairly catastrophic error, as the - * entire layout extent lists are now corrupted. - * We should have some way to distinguish this. - */ - be = NULL; - goto out_err; - } - } - spin_unlock(&bl->bl_ext_lock); - status = 0; - out: - __free_page(scratch); - dprintk("%s returns %i\n", __func__, status); - return status; - - out_err: - bl_put_extent(be); - while (!list_empty(&extents)) { - be = list_first_entry(&extents, struct pnfs_block_extent, - be_node); - list_del(&be->be_node); - bl_put_extent(be); - } - goto out; -} diff --git a/fs/nfs/blocklayout/blocklayoutdm.c b/fs/nfs/blocklayout/blocklayoutdm.c deleted file mode 100644 index 8999cfddd866..000000000000 --- a/fs/nfs/blocklayout/blocklayoutdm.c +++ /dev/null @@ -1,108 +0,0 @@ -/* - * linux/fs/nfs/blocklayout/blocklayoutdm.c - * - * Module for the NFSv4.1 pNFS block layout driver. - * - * Copyright (c) 2007 The Regents of the University of Michigan. - * All rights reserved. - * - * Fred Isaman <iisaman@umich.edu> - * Andy Adamson <andros@citi.umich.edu> - * - * permission is granted to use, copy, create derivative works and - * redistribute this software and such derivative works for any purpose, - * so long as the name of the university of michigan is not used in - * any advertising or publicity pertaining to the use or distribution - * of this software without specific, written prior authorization. if - * the above copyright notice or any other identification of the - * university of michigan is included in any copy of any portion of - * this software, then the disclaimer below must also be included. - * - * this software is provided as is, without representation from the - * university of michigan as to its fitness for any purpose, and without - * warranty by the university of michigan of any kind, either express - * or implied, including without limitation the implied warranties of - * merchantability and fitness for a particular purpose. the regents - * of the university of michigan shall not be liable for any damages, - * including special, indirect, incidental, or consequential damages, - * with respect to any claim arising out or in connection with the use - * of the software, even if it has been or is hereafter advised of the - * possibility of such damages. - */ - -#include <linux/genhd.h> /* gendisk - used in a dprintk*/ -#include <linux/sched.h> -#include <linux/hash.h> - -#include "blocklayout.h" - -#define NFSDBG_FACILITY NFSDBG_PNFS_LD - -static void dev_remove(struct net *net, dev_t dev) -{ - struct bl_pipe_msg bl_pipe_msg; - struct rpc_pipe_msg *msg = &bl_pipe_msg.msg; - struct bl_dev_msg bl_umount_request; - struct bl_msg_hdr bl_msg = { - .type = BL_DEVICE_UMOUNT, - .totallen = sizeof(bl_umount_request), - }; - uint8_t *dataptr; - DECLARE_WAITQUEUE(wq, current); - struct nfs_net *nn = net_generic(net, nfs_net_id); - - dprintk("Entering %s\n", __func__); - - bl_pipe_msg.bl_wq = &nn->bl_wq; - memset(msg, 0, sizeof(*msg)); - msg->len = sizeof(bl_msg) + bl_msg.totallen; - msg->data = kzalloc(msg->len, GFP_NOFS); - if (!msg->data) - goto out; - - memset(&bl_umount_request, 0, sizeof(bl_umount_request)); - bl_umount_request.major = MAJOR(dev); - bl_umount_request.minor = MINOR(dev); - - memcpy(msg->data, &bl_msg, sizeof(bl_msg)); - dataptr = (uint8_t *) msg->data; - memcpy(&dataptr[sizeof(bl_msg)], &bl_umount_request, sizeof(bl_umount_request)); - - add_wait_queue(&nn->bl_wq, &wq); - if (rpc_queue_upcall(nn->bl_device_pipe, msg) < 0) { - remove_wait_queue(&nn->bl_wq, &wq); - goto out; - } - - set_current_state(TASK_UNINTERRUPTIBLE); - schedule(); - __set_current_state(TASK_RUNNING); - remove_wait_queue(&nn->bl_wq, &wq); - -out: - kfree(msg->data); -} - -/* - * Release meta device - */ -static void nfs4_blk_metadev_release(struct pnfs_block_dev *bdev) -{ - dprintk("%s Releasing\n", __func__); - nfs4_blkdev_put(bdev->bm_mdev); - dev_remove(bdev->net, bdev->bm_mdev->bd_dev); -} - -void bl_free_block_dev(struct pnfs_block_dev *bdev) -{ - if (bdev) { - if (bdev->bm_mdev) { - dprintk("%s Removing DM device: %d:%d\n", - __func__, - MAJOR(bdev->bm_mdev->bd_dev), - MINOR(bdev->bm_mdev->bd_dev)); - nfs4_blk_metadev_release(bdev); - } - kfree(bdev); - } -} diff --git a/fs/nfs/blocklayout/dev.c b/fs/nfs/blocklayout/dev.c new file mode 100644 index 000000000000..5aed4f98df41 --- /dev/null +++ b/fs/nfs/blocklayout/dev.c @@ -0,0 +1,363 @@ +/* + * Copyright (c) 2014 Christoph Hellwig. + */ +#include <linux/sunrpc/svc.h> +#include <linux/blkdev.h> +#include <linux/nfs4.h> +#include <linux/nfs_fs.h> +#include <linux/nfs_xdr.h> + +#include "blocklayout.h" + +#define NFSDBG_FACILITY NFSDBG_PNFS_LD + +static void +bl_free_device(struct pnfs_block_dev *dev) +{ + if (dev->nr_children) { + int i; + + for (i = 0; i < dev->nr_children; i++) + bl_free_device(&dev->children[i]); + kfree(dev->children); + } else { + if (dev->bdev) + blkdev_put(dev->bdev, FMODE_READ); + } +} + +void +bl_free_deviceid_node(struct nfs4_deviceid_node *d) +{ + struct pnfs_block_dev *dev = + container_of(d, struct pnfs_block_dev, node); + + bl_free_device(dev); + kfree(dev); +} + +static int +nfs4_block_decode_volume(struct xdr_stream *xdr, struct pnfs_block_volume *b) +{ + __be32 *p; + int i; + + p = xdr_inline_decode(xdr, 4); + if (!p) + return -EIO; + b->type = be32_to_cpup(p++); + + switch (b->type) { + case PNFS_BLOCK_VOLUME_SIMPLE: + p = xdr_inline_decode(xdr, 4); + if (!p) + return -EIO; + b->simple.nr_sigs = be32_to_cpup(p++); + if (!b->simple.nr_sigs) { + dprintk("no signature\n"); + return -EIO; + } + + b->simple.len = 4 + 4; + for (i = 0; i < b->simple.nr_sigs; i++) { + p = xdr_inline_decode(xdr, 8 + 4); + if (!p) + return -EIO; + p = xdr_decode_hyper(p, &b->simple.sigs[i].offset); + b->simple.sigs[i].sig_len = be32_to_cpup(p++); + + p = xdr_inline_decode(xdr, b->simple.sigs[i].sig_len); + if (!p) + return -EIO; + memcpy(&b->simple.sigs[i].sig, p, + b->simple.sigs[i].sig_len); + + b->simple.len += 8 + 4 + b->simple.sigs[i].sig_len; + } + break; + case PNFS_BLOCK_VOLUME_SLICE: + p = xdr_inline_decode(xdr, 8 + 8 + 4); + if (!p) + return -EIO; + p = xdr_decode_hyper(p, &b->slice.start); + p = xdr_decode_hyper(p, &b->slice.len); + b->slice.volume = be32_to_cpup(p++); + break; + case PNFS_BLOCK_VOLUME_CONCAT: + p = xdr_inline_decode(xdr, 4); + if (!p) + return -EIO; + b->concat.volumes_count = be32_to_cpup(p++); + + p = xdr_inline_decode(xdr, b->concat.volumes_count * 4); + if (!p) + return -EIO; + for (i = 0; i < b->concat.volumes_count; i++) + b->concat.volumes[i] = be32_to_cpup(p++); + break; + case PNFS_BLOCK_VOLUME_STRIPE: + p = xdr_inline_decode(xdr, 8 + 4); + if (!p) + return -EIO; + p = xdr_decode_hyper(p, &b->stripe.chunk_size); + b->stripe.volumes_count = be32_to_cpup(p++); + + p = xdr_inline_decode(xdr, b->stripe.volumes_count * 4); + if (!p) + return -EIO; + for (i = 0; i < b->stripe.volumes_count; i++) + b->stripe.volumes[i] = be32_to_cpup(p++); + break; + default: + dprintk("unknown volume type!\n"); + return -EIO; + } + + return 0; +} + +static bool bl_map_simple(struct pnfs_block_dev *dev, u64 offset, + struct pnfs_block_dev_map *map) +{ + map->start = dev->start; + map->len = dev->len; + map->disk_offset = dev->disk_offset; + map->bdev = dev->bdev; + return true; +} + +static bool bl_map_concat(struct pnfs_block_dev *dev, u64 offset, + struct pnfs_block_dev_map *map) +{ + int i; + + for (i = 0; i < dev->nr_children; i++) { + struct pnfs_block_dev *child = &dev->children[i]; + + if (child->start > offset || + child->start + child->len <= offset) + continue; + + child->map(child, offset - child->start, map); + return true; + } + + dprintk("%s: ran off loop!\n", __func__); + return false; +} + +static bool bl_map_stripe(struct pnfs_block_dev *dev, u64 offset, + struct pnfs_block_dev_map *map) +{ + struct pnfs_block_dev *child; + u64 chunk; + u32 chunk_idx; + u64 disk_offset; + + chunk = div_u64(offset, dev->chunk_size); + div_u64_rem(chunk, dev->nr_children, &chunk_idx); + + if (chunk_idx > dev->nr_children) { + dprintk("%s: invalid chunk idx %d (%lld/%lld)\n", + __func__, chunk_idx, offset, dev->chunk_size); + /* error, should not happen */ + return false; + } + + /* truncate offset to the beginning of the stripe */ + offset = chunk * dev->chunk_size; + + /* disk offset of the stripe */ + disk_offset = div_u64(offset, dev->nr_children); + + child = &dev->children[chunk_idx]; + child->map(child, disk_offset, map); + + map->start += offset; + map->disk_offset += disk_offset; + map->len = dev->chunk_size; + return true; +} + +static int +bl_parse_deviceid(struct nfs_server *server, struct pnfs_block_dev *d, + struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask); + + +static int +bl_parse_simple(struct nfs_server *server, struct pnfs_block_dev *d, + struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask) +{ + struct pnfs_block_volume *v = &volumes[idx]; + dev_t dev; + + dev = bl_resolve_deviceid(server, v, gfp_mask); + if (!dev) + return -EIO; + + d->bdev = blkdev_get_by_dev(dev, FMODE_READ, NULL); + if (IS_ERR(d->bdev)) { + printk(KERN_WARNING "pNFS: failed to open device %d:%d (%ld)\n", + MAJOR(dev), MINOR(dev), PTR_ERR(d->bdev)); + return PTR_ERR(d->bdev); + } + + + d->len = i_size_read(d->bdev->bd_inode); + d->map = bl_map_simple; + + printk(KERN_INFO "pNFS: using block device %s\n", + d->bdev->bd_disk->disk_name); + return 0; +} + +static int +bl_parse_slice(struct nfs_server *server, struct pnfs_block_dev *d, + struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask) +{ + struct pnfs_block_volume *v = &volumes[idx]; + int ret; + + ret = bl_parse_deviceid(server, d, volumes, v->slice.volume, gfp_mask); + if (ret) + return ret; + + d->disk_offset = v->slice.start; + d->len = v->slice.len; + return 0; +} + +static int +bl_parse_concat(struct nfs_server *server, struct pnfs_block_dev *d, + struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask) +{ + struct pnfs_block_volume *v = &volumes[idx]; + u64 len = 0; + int ret, i; + + d->children = kcalloc(v->concat.volumes_count, + sizeof(struct pnfs_block_dev), GFP_KERNEL); + if (!d->children) + return -ENOMEM; + + for (i = 0; i < v->concat.volumes_count; i++) { + ret = bl_parse_deviceid(server, &d->children[i], + volumes, v->concat.volumes[i], gfp_mask); + if (ret) + return ret; + + d->nr_children++; + d->children[i].start += len; + len += d->children[i].len; + } + + d->len = len; + d->map = bl_map_concat; + return 0; +} + +static int +bl_parse_stripe(struct nfs_server *server, struct pnfs_block_dev *d, + struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask) +{ + struct pnfs_block_volume *v = &volumes[idx]; + u64 len = 0; + int ret, i; + + d->children = kcalloc(v->stripe.volumes_count, + sizeof(struct pnfs_block_dev), GFP_KERNEL); + if (!d->children) + return -ENOMEM; + + for (i = 0; i < v->stripe.volumes_count; i++) { + ret = bl_parse_deviceid(server, &d->children[i], + volumes, v->stripe.volumes[i], gfp_mask); + if (ret) + return ret; + + d->nr_children++; + len += d->children[i].len; + } + + d->len = len; + d->chunk_size = v->stripe.chunk_size; + d->map = bl_map_stripe; + return 0; +} + +static int +bl_parse_deviceid(struct nfs_server *server, struct pnfs_block_dev *d, + struct pnfs_block_volume *volumes, int idx, gfp_t gfp_mask) +{ + switch (volumes[idx].type) { + case PNFS_BLOCK_VOLUME_SIMPLE: + return bl_parse_simple(server, d, volumes, idx, gfp_mask); + case PNFS_BLOCK_VOLUME_SLICE: + return bl_parse_slice(server, d, volumes, idx, gfp_mask); + case PNFS_BLOCK_VOLUME_CONCAT: + return bl_parse_concat(server, d, volumes, idx, gfp_mask); + case PNFS_BLOCK_VOLUME_STRIPE: + return bl_parse_stripe(server, d, volumes, idx, gfp_mask); + default: + dprintk("unsupported volume type: %d\n", volumes[idx].type); + return -EIO; + } +} + +struct nfs4_deviceid_node * +bl_alloc_deviceid_node(struct nfs_server *server, struct pnfs_device *pdev, + gfp_t gfp_mask) +{ + struct nfs4_deviceid_node *node = NULL; + struct pnfs_block_volume *volumes; + struct pnfs_block_dev *top; + struct xdr_stream xdr; + struct xdr_buf buf; + struct page *scratch; + int nr_volumes, ret, i; + __be32 *p; + + scratch = alloc_page(gfp_mask); + if (!scratch) + goto out; + + xdr_init_decode_pages(&xdr, &buf, pdev->pages, pdev->pglen); + xdr_set_scratch_buffer(&xdr, page_address(scratch), PAGE_SIZE); + + p = xdr_inline_decode(&xdr, sizeof(__be32)); + if (!p) + goto out_free_scratch; + nr_volumes = be32_to_cpup(p++); + + volumes = kcalloc(nr_volumes, sizeof(struct pnfs_block_volume), + gfp_mask); + if (!volumes) + goto out_free_scratch; + + for (i = 0; i < nr_volumes; i++) { + ret = nfs4_block_decode_volume(&xdr, &volumes[i]); + if (ret < 0) + goto out_free_volumes; + } + + top = kzalloc(sizeof(*top), gfp_mask); + if (!top) + goto out_free_volumes; + + ret = bl_parse_deviceid(server, top, volumes, nr_volumes - 1, gfp_mask); + if (ret) { + bl_free_device(top); + kfree(top); + goto out_free_volumes; + } + + node = &top->node; + nfs4_init_deviceid_node(node, server, &pdev->dev_id); + +out_free_volumes: + kfree(volumes); +out_free_scratch: + __free_page(scratch); +out: + return node; +} diff --git a/fs/nfs/blocklayout/extent_tree.c b/fs/nfs/blocklayout/extent_tree.c new file mode 100644 index 000000000000..31d0b5e53dfd --- /dev/null +++ b/fs/nfs/blocklayout/extent_tree.c @@ -0,0 +1,602 @@ +/* + * Copyright (c) 2014 Christoph Hellwig. + */ + +#include <linux/vmalloc.h> + +#include "blocklayout.h" + +#define NFSDBG_FACILITY NFSDBG_PNFS_LD + +static inline struct pnfs_block_extent * +ext_node(struct rb_node *node) +{ + return rb_entry(node, struct pnfs_block_extent, be_node); +} + +static struct pnfs_block_extent * +ext_tree_first(struct rb_root *root) +{ + struct rb_node *node = rb_first(root); + return node ? ext_node(node) : NULL; +} + +static struct pnfs_block_extent * +ext_tree_prev(struct pnfs_block_extent *be) +{ + struct rb_node *node = rb_prev(&be->be_node); + return node ? ext_node(node) : NULL; +} + +static struct pnfs_block_extent * +ext_tree_next(struct pnfs_block_extent *be) +{ + struct rb_node *node = rb_next(&be->be_node); + return node ? ext_node(node) : NULL; +} + +static inline sector_t +ext_f_end(struct pnfs_block_extent *be) +{ + return be->be_f_offset + be->be_length; +} + +static struct pnfs_block_extent * +__ext_tree_search(struct rb_root *root, sector_t start) +{ + struct rb_node *node = root->rb_node; + struct pnfs_block_extent *be = NULL; + + while (node) { + be = ext_node(node); + if (start < be->be_f_offset) + node = node->rb_left; + else if (start >= ext_f_end(be)) + node = node->rb_right; + else + return be; + } + + if (be) { + if (start < be->be_f_offset) + return be; + + if (start >= ext_f_end(be)) + return ext_tree_next(be); + } + + return NULL; +} + +static bool +ext_can_merge(struct pnfs_block_extent *be1, struct pnfs_block_extent *be2) +{ + if (be1->be_state != be2->be_state) + return false; + if (be1->be_device != be2->be_device) + return false; + + if (be1->be_f_offset + be1->be_length != be2->be_f_offset) + return false; + + if (be1->be_state != PNFS_BLOCK_NONE_DATA && + (be1->be_v_offset + be1->be_length != be2->be_v_offset)) + return false; + + if (be1->be_state == PNFS_BLOCK_INVALID_DATA && + be1->be_tag != be2->be_tag) + return false; + + return true; +} + +static struct pnfs_block_extent * +ext_try_to_merge_left(struct rb_root *root, struct pnfs_block_extent *be) +{ + struct pnfs_block_extent *left = ext_tree_prev(be); + + if (left && ext_can_merge(left, be)) { + left->be_length += be->be_length; + rb_erase(&be->be_node, root); + nfs4_put_deviceid_node(be->be_device); + kfree(be); + return left; + } + + return be; +} + +static struct pnfs_block_extent * +ext_try_to_merge_right(struct rb_root *root, struct pnfs_block_extent *be) +{ + struct pnfs_block_extent *right = ext_tree_next(be); + + if (right && ext_can_merge(be, right)) { + be->be_length += right->be_length; + rb_erase(&right->be_node, root); + nfs4_put_deviceid_node(right->be_device); + kfree(right); + } + + return be; +} + +static void +__ext_tree_insert(struct rb_root *root, + struct pnfs_block_extent *new, bool merge_ok) +{ + struct rb_node **p = &root->rb_node, *parent = NULL; + struct pnfs_block_extent *be; + + while (*p) { + parent = *p; + be = ext_node(parent); + + if (new->be_f_offset < be->be_f_offset) { + if (merge_ok && ext_can_merge(new, be)) { + be->be_f_offset = new->be_f_offset; + if (be->be_state != PNFS_BLOCK_NONE_DATA) + be->be_v_offset = new->be_v_offset; + be->be_length += new->be_length; + be = ext_try_to_merge_left(root, be); + goto free_new; + } + p = &(*p)->rb_left; + } else if (new->be_f_offset >= ext_f_end(be)) { + if (merge_ok && ext_can_merge(be, new)) { + be->be_length += new->be_length; + be = ext_try_to_merge_right(root, be); + goto free_new; + } + p = &(*p)->rb_right; + } else { + BUG(); + } + } + + rb_link_node(&new->be_node, parent, p); + rb_insert_color(&new->be_node, root); + return; +free_new: + nfs4_put_deviceid_node(new->be_device); + kfree(new); +} + +static int +__ext_tree_remove(struct rb_root *root, sector_t start, sector_t end) +{ + struct pnfs_block_extent *be; + sector_t len1 = 0, len2 = 0; + sector_t orig_v_offset; + sector_t orig_len; + + be = __ext_tree_search(root, start); + if (!be) + return 0; + if (be->be_f_offset >= end) + return 0; + + orig_v_offset = be->be_v_offset; + orig_len = be->be_length; + + if (start > be->be_f_offset) + len1 = start - be->be_f_offset; + if (ext_f_end(be) > end) + len2 = ext_f_end(be) - end; + + if (len2 > 0) { + if (len1 > 0) { + struct pnfs_block_extent *new; + + new = kzalloc(sizeof(*new), GFP_ATOMIC); + if (!new) + return -ENOMEM; + + be->be_length = len1; + + new->be_f_offset = end; + if (be->be_state != PNFS_BLOCK_NONE_DATA) { + new->be_v_offset = + orig_v_offset + orig_len - len2; + } + new->be_length = len2; + new->be_state = be->be_state; + new->be_tag = be->be_tag; + new->be_device = nfs4_get_deviceid(be->be_device); + + __ext_tree_insert(root, new, true); + } else { + be->be_f_offset = end; + if (be->be_state != PNFS_BLOCK_NONE_DATA) { + be->be_v_offset = + orig_v_offset + orig_len - len2; + } + be->be_length = len2; + } + } else { + if (len1 > 0) { + be->be_length = len1; + be = ext_tree_next(be); + } + + while (be && ext_f_end(be) <= end) { + struct pnfs_block_extent *next = ext_tree_next(be); + + rb_erase(&be->be_node, root); + nfs4_put_deviceid_node(be->be_device); + kfree(be); + be = next; + } + + if (be && be->be_f_offset < end) { + len1 = ext_f_end(be) - end; + be->be_f_offset = end; + if (be->be_state != PNFS_BLOCK_NONE_DATA) + be->be_v_offset += be->be_length - len1; + be->be_length = len1; + } + } + + return 0; +} + +int +ext_tree_insert(struct pnfs_block_layout *bl, struct pnfs_block_extent *new) +{ + struct pnfs_block_extent *be; + struct rb_root *root; + int err = 0; + + switch (new->be_state) { + case PNFS_BLOCK_READWRITE_DATA: + case PNFS_BLOCK_INVALID_DATA: + root = &bl->bl_ext_rw; + break; + case PNFS_BLOCK_READ_DATA: + case PNFS_BLOCK_NONE_DATA: + root = &bl->bl_ext_ro; + break; + default: + dprintk("invalid extent type\n"); + return -EINVAL; + } + + spin_lock(&bl->bl_ext_lock); +retry: + be = __ext_tree_search(root, new->be_f_offset); + if (!be || be->be_f_offset >= ext_f_end(new)) { + __ext_tree_insert(root, new, true); + } else if (new->be_f_offset >= be->be_f_offset) { + if (ext_f_end(new) <= ext_f_end(be)) { + nfs4_put_deviceid_node(new->be_device); + kfree(new); + } else { + sector_t new_len = ext_f_end(new) - ext_f_end(be); + sector_t diff = new->be_length - new_len; + + new->be_f_offset += diff; + new->be_v_offset += diff; + new->be_length = new_len; + goto retry; + } + } else if (ext_f_end(new) <= ext_f_end(be)) { + new->be_length = be->be_f_offset - new->be_f_offset; + __ext_tree_insert(root, new, true); + } else { + struct pnfs_block_extent *split; + sector_t new_len = ext_f_end(new) - ext_f_end(be); + sector_t diff = new->be_length - new_len; + + split = kmemdup(new, sizeof(*new), GFP_ATOMIC); + if (!split) { + err = -EINVAL; + goto out; + } + + split->be_length = be->be_f_offset - split->be_f_offset; + split->be_device = nfs4_get_deviceid(new->be_device); + __ext_tree_insert(root, split, true); + + new->be_f_offset += diff; + new->be_v_offset += diff; + new->be_length = new_len; + goto retry; + } +out: + spin_unlock(&bl->bl_ext_lock); + return err; +} + +static bool +__ext_tree_lookup(struct rb_root *root, sector_t isect, + struct pnfs_block_extent *ret) +{ + struct rb_node *node; + struct pnfs_block_extent *be; + + node = root->rb_node; + while (node) { + be = ext_node(node); + if (isect < be->be_f_offset) + node = node->rb_left; + else if (isect >= ext_f_end(be)) + node = node->rb_right; + else { + *ret = *be; + return true; + } + } + + return false; +} + +bool +ext_tree_lookup(struct pnfs_block_layout *bl, sector_t isect, + struct pnfs_block_extent *ret, bool rw) +{ + bool found = false; + + spin_lock(&bl->bl_ext_lock); + if (!rw) + found = __ext_tree_lookup(&bl->bl_ext_ro, isect, ret); + if (!found) + found = __ext_tree_lookup(&bl->bl_ext_rw, isect, ret); + spin_unlock(&bl->bl_ext_lock); + + return found; +} + +int ext_tree_remove(struct pnfs_block_layout *bl, bool rw, + sector_t start, sector_t end) +{ + int err, err2; + + spin_lock(&bl->bl_ext_lock); + err = __ext_tree_remove(&bl->bl_ext_ro, start, end); + if (rw) { + err2 = __ext_tree_remove(&bl->bl_ext_rw, start, end); + if (!err) + err = err2; + } + spin_unlock(&bl->bl_ext_lock); + + return err; +} + +static int +ext_tree_split(struct rb_root *root, struct pnfs_block_extent *be, + sector_t split) +{ + struct pnfs_block_extent *new; + sector_t orig_len = be->be_length; + + new = kzalloc(sizeof(*new), GFP_ATOMIC); + if (!new) + return -ENOMEM; + + be->be_length = split - be->be_f_offset; + + new->be_f_offset = split; + if (be->be_state != PNFS_BLOCK_NONE_DATA) + new->be_v_offset = be->be_v_offset + be->be_length; + new->be_length = orig_len - be->be_length; + new->be_state = be->be_state; + new->be_tag = be->be_tag; + new->be_device = nfs4_get_deviceid(be->be_device); + + __ext_tree_insert(root, new, false); + return 0; +} + +int +ext_tree_mark_written(struct pnfs_block_layout *bl, sector_t start, + sector_t len) +{ + struct rb_root *root = &bl->bl_ext_rw; + sector_t end = start + len; + struct pnfs_block_extent *be; + int err = 0; + + spin_lock(&bl->bl_ext_lock); + /* + * First remove all COW extents or holes from written to range. + */ + err = __ext_tree_remove(&bl->bl_ext_ro, start, end); + if (err) + goto out; + + /* + * Then mark all invalid extents in the range as written to. + */ + for (be = __ext_tree_search(root, start); be; be = ext_tree_next(be)) { + if (be->be_f_offset >= end) + break; + + if (be->be_state != PNFS_BLOCK_INVALID_DATA || be->be_tag) + continue; + + if (be->be_f_offset < start) { + struct pnfs_block_extent *left = ext_tree_prev(be); + + if (left && ext_can_merge(left, be)) { + sector_t diff = start - be->be_f_offset; + + left->be_length += diff; + + be->be_f_offset += diff; + be->be_v_offset += diff; + be->be_length -= diff; + } else { + err = ext_tree_split(root, be, start); + if (err) + goto out; + } + } + + if (ext_f_end(be) > end) { + struct pnfs_block_extent *right = ext_tree_next(be); + + if (right && ext_can_merge(be, right)) { + sector_t diff = end - be->be_f_offset; + + be->be_length -= diff; + + right->be_f_offset -= diff; + right->be_v_offset -= diff; + right->be_length += diff; + } else { + err = ext_tree_split(root, be, end); + if (err) + goto out; + } + } + + if (be->be_f_offset >= start && ext_f_end(be) <= end) { + be->be_tag = EXTENT_WRITTEN; + be = ext_try_to_merge_left(root, be); + be = ext_try_to_merge_right(root, be); + } + } +out: + spin_unlock(&bl->bl_ext_lock); + return err; +} + +static void ext_tree_free_commitdata(struct nfs4_layoutcommit_args *arg, + size_t buffer_size) +{ + if (arg->layoutupdate_pages != &arg->layoutupdate_page) { + int nr_pages = DIV_ROUND_UP(buffer_size, PAGE_SIZE), i; + + for (i = 0; i < nr_pages; i++) + put_page(arg->layoutupdate_pages[i]); + kfree(arg->layoutupdate_pages); + } else { + put_page(arg->layoutupdate_page); + } +} + +static int ext_tree_encode_commit(struct pnfs_block_layout *bl, __be32 *p, + size_t buffer_size, size_t *count) +{ + struct pnfs_block_extent *be; + int ret = 0; + + spin_lock(&bl->bl_ext_lock); + for (be = ext_tree_first(&bl->bl_ext_rw); be; be = ext_tree_next(be)) { + if (be->be_state != PNFS_BLOCK_INVALID_DATA || + be->be_tag != EXTENT_WRITTEN) + continue; + + (*count)++; + if (*count * BL_EXTENT_SIZE > buffer_size) { + /* keep counting.. */ + ret = -ENOSPC; + continue; + } + + p = xdr_encode_opaque_fixed(p, be->be_device->deviceid.data, + NFS4_DEVICEID4_SIZE); + p = xdr_encode_hyper(p, be->be_f_offset << SECTOR_SHIFT); + p = xdr_encode_hyper(p, be->be_length << SECTOR_SHIFT); + p = xdr_encode_hyper(p, 0LL); + *p++ = cpu_to_be32(PNFS_BLOCK_READWRITE_DATA); + + be->be_tag = EXTENT_COMMITTING; + } + spin_unlock(&bl->bl_ext_lock); + + return ret; +} + +int +ext_tree_prepare_commit(struct nfs4_layoutcommit_args *arg) +{ + struct pnfs_block_layout *bl = BLK_LO2EXT(NFS_I(arg->inode)->layout); + size_t count = 0, buffer_size = PAGE_SIZE; + __be32 *start_p; + int ret; + + dprintk("%s enter\n", __func__); + + arg->layoutupdate_page = alloc_page(GFP_NOFS); + if (!arg->layoutupdate_page) + return -ENOMEM; + start_p = page_address(arg->layoutupdate_page); + arg->layoutupdate_pages = &arg->layoutupdate_page; + +retry: + ret = ext_tree_encode_commit(bl, start_p + 1, buffer_size, &count); + if (unlikely(ret)) { + ext_tree_free_commitdata(arg, buffer_size); + + buffer_size = sizeof(__be32) + BL_EXTENT_SIZE * count; + count = 0; + + arg->layoutupdate_pages = + kcalloc(DIV_ROUND_UP(buffer_size, PAGE_SIZE), + sizeof(struct page *), GFP_NOFS); + if (!arg->layoutupdate_pages) + return -ENOMEM; + + start_p = __vmalloc(buffer_size, GFP_NOFS, PAGE_KERNEL); + if (!start_p) { + kfree(arg->layoutupdate_pages); + return -ENOMEM; + } + + goto retry; + } + + *start_p = cpu_to_be32(count); + arg->layoutupdate_len = sizeof(__be32) + BL_EXTENT_SIZE * count; + + if (unlikely(arg->layoutupdate_pages != &arg->layoutupdate_page)) { + __be32 *p = start_p; + int i = 0; + + for (p = start_p; + p < start_p + arg->layoutupdate_len; + p += PAGE_SIZE) { + arg->layoutupdate_pages[i++] = vmalloc_to_page(p); + } + } + + dprintk("%s found %zu ranges\n", __func__, count); + return 0; +} + +void +ext_tree_mark_committed(struct nfs4_layoutcommit_args *arg, int status) +{ + struct pnfs_block_layout *bl = BLK_LO2EXT(NFS_I(arg->inode)->layout); + struct rb_root *root = &bl->bl_ext_rw; + struct pnfs_block_extent *be; + + dprintk("%s status %d\n", __func__, status); + + ext_tree_free_commitdata(arg, arg->layoutupdate_len); + + spin_lock(&bl->bl_ext_lock); + for (be = ext_tree_first(root); be; be = ext_tree_next(be)) { + if (be->be_state != PNFS_BLOCK_INVALID_DATA || + be->be_tag != EXTENT_COMMITTING) + continue; + + if (status) { + /* + * Mark as written and try again. + * + * XXX: some real error handling here wouldn't hurt.. + */ + be->be_tag = EXTENT_WRITTEN; + } else { + be->be_state = PNFS_BLOCK_READWRITE_DATA; + be->be_tag = 0; + } + + be = ext_try_to_merge_left(root, be); + be = ext_try_to_merge_right(root, be); + } + spin_unlock(&bl->bl_ext_lock); +} diff --git a/fs/nfs/blocklayout/extents.c b/fs/nfs/blocklayout/extents.c deleted file mode 100644 index 4d0161442565..000000000000 --- a/fs/nfs/blocklayout/extents.c +++ /dev/null @@ -1,908 +0,0 @@ -/* - * linux/fs/nfs/blocklayout/blocklayout.h - * - * Module for the NFSv4.1 pNFS block layout driver. - * - * Copyright (c) 2006 The Regents of the University of Michigan. - * All rights reserved. - * - * Andy Adamson <andros@citi.umich.edu> - * Fred Isaman <iisaman@umich.edu> - * - * permission is granted to use, copy, create derivative works and - * redistribute this software and such derivative works for any purpose, - * so long as the name of the university of michigan is not used in - * any advertising or publicity pertaining to the use or distribution - * of this software without specific, written prior authorization. if - * the above copyright notice or any other identification of the - * university of michigan is included in any copy of any portion of - * this software, then the disclaimer below must also be included. - * - * this software is provided as is, without representation from the - * university of michigan as to its fitness for any purpose, and without - * warranty by the university of michigan of any kind, either express - * or implied, including without limitation the implied warranties of - * merchantability and fitness for a particular purpose. the regents - * of the university of michigan shall not be liable for any damages, - * including special, indirect, incidental, or consequential damages, - * with respect to any claim arising out or in connection with the use - * of the software, even if it has been or is hereafter advised of the - * possibility of such damages. - */ - -#include "blocklayout.h" -#define NFSDBG_FACILITY NFSDBG_PNFS_LD - -/* Bit numbers */ -#define EXTENT_INITIALIZED 0 -#define EXTENT_WRITTEN 1 -#define EXTENT_IN_COMMIT 2 -#define INTERNAL_EXISTS MY_MAX_TAGS -#define INTERNAL_MASK ((1 << INTERNAL_EXISTS) - 1) - -/* Returns largest t<=s s.t. t%base==0 */ -static inline sector_t normalize(sector_t s, int base) -{ - sector_t tmp = s; /* Since do_div modifies its argument */ - return s - sector_div(tmp, base); -} - -static inline sector_t normalize_up(sector_t s, int base) -{ - return normalize(s + base - 1, base); -} - -/* Complete stub using list while determine API wanted */ - -/* Returns tags, or negative */ -static int32_t _find_entry(struct my_tree *tree, u64 s) -{ - struct pnfs_inval_tracking *pos; - - dprintk("%s(%llu) enter\n", __func__, s); - list_for_each_entry_reverse(pos, &tree->mtt_stub, it_link) { - if (pos->it_sector > s) - continue; - else if (pos->it_sector == s) - return pos->it_tags & INTERNAL_MASK; - else - break; - } - return -ENOENT; -} - -static inline -int _has_tag(struct my_tree *tree, u64 s, int32_t tag) -{ - int32_t tags; - - dprintk("%s(%llu, %i) enter\n", __func__, s, tag); - s = normalize(s, tree->mtt_step_size); - tags = _find_entry(tree, s); - if ((tags < 0) || !(tags & (1 << tag))) - return 0; - else - return 1; -} - -/* Creates entry with tag, or if entry already exists, unions tag to it. - * If storage is not NULL, newly created entry will use it. - * Returns number of entries added, or negative on error. - */ -static int _add_entry(struct my_tree *tree, u64 s, int32_t tag, - struct pnfs_inval_tracking *storage) -{ - int found = 0; - struct pnfs_inval_tracking *pos; - - dprintk("%s(%llu, %i, %p) enter\n", __func__, s, tag, storage); - list_for_each_entry_reverse(pos, &tree->mtt_stub, it_link) { - if (pos->it_sector > s) - continue; - else if (pos->it_sector == s) { - found = 1; - break; - } else - break; - } - if (found) { - pos->it_tags |= (1 << tag); - return 0; - } else { - struct pnfs_inval_tracking *new; - new = storage; - new->it_sector = s; - new->it_tags = (1 << tag); - list_add(&new->it_link, &pos->it_link); - return 1; - } -} - -/* XXXX Really want option to not create */ -/* Over range, unions tag with existing entries, else creates entry with tag */ -static int _set_range(struct my_tree *tree, int32_t tag, u64 s, u64 length) -{ - u64 i; - - dprintk("%s(%i, %llu, %llu) enter\n", __func__, tag, s, length); - for (i = normalize(s, tree->mtt_step_size); i < s + length; - i += tree->mtt_step_size) - if (_add_entry(tree, i, tag, NULL)) - return -ENOMEM; - return 0; -} - -/* Ensure that future operations on given range of tree will not malloc */ -static int _preload_range(struct pnfs_inval_markings *marks, - u64 offset, u64 length) -{ - u64 start, end, s; - int count, i, used = 0, status = -ENOMEM; - struct pnfs_inval_tracking **storage; - struct my_tree *tree = &marks->im_tree; - - dprintk("%s(%llu, %llu) enter\n", __func__, offset, length); - start = normalize(offset, tree->mtt_step_size); - end = normalize_up(offset + length, tree->mtt_step_size); - count = (int)(end - start) / (int)tree->mtt_step_size; - - /* Pre-malloc what memory we might need */ - storage = kcalloc(count, sizeof(*storage), GFP_NOFS); - if (!storage) - return -ENOMEM; - for (i = 0; i < count; i++) { - storage[i] = kmalloc(sizeof(struct pnfs_inval_tracking), - GFP_NOFS); - if (!storage[i]) - goto out_cleanup; - } - - spin_lock_bh(&marks->im_lock); - for (s = start; s < end; s += tree->mtt_step_size) - used += _add_entry(tree, s, INTERNAL_EXISTS, storage[used]); - spin_unlock_bh(&marks->im_lock); - - status = 0; - - out_cleanup: - for (i = used; i < count; i++) { - if (!storage[i]) - break; - kfree(storage[i]); - } - kfree(storage); - return status; -} - -/* We are relying on page lock to serialize this */ -int bl_is_sector_init(struct pnfs_inval_markings *marks, sector_t isect) -{ - int rv; - - spin_lock_bh(&marks->im_lock); - rv = _has_tag(&marks->im_tree, isect, EXTENT_INITIALIZED); - spin_unlock_bh(&marks->im_lock); - return rv; -} - -/* Assume start, end already sector aligned */ -static int -_range_has_tag(struct my_tree *tree, u64 start, u64 end, int32_t tag) -{ - struct pnfs_inval_tracking *pos; - u64 expect = 0; - - dprintk("%s(%llu, %llu, %i) enter\n", __func__, start, end, tag); - list_for_each_entry_reverse(pos, &tree->mtt_stub, it_link) { - if (pos->it_sector >= end) - continue; - if (!expect) { - if ((pos->it_sector == end - tree->mtt_step_size) && - (pos->it_tags & (1 << tag))) { - expect = pos->it_sector - tree->mtt_step_size; - if (pos->it_sector < tree->mtt_step_size || expect < start) - return 1; - continue; - } else { - return 0; - } - } - if (pos->it_sector != expect || !(pos->it_tags & (1 << tag))) - return 0; - expect -= tree->mtt_step_size; - if (expect < start) - return 1; - } - return 0; -} - -static int is_range_written(struct pnfs_inval_markings *marks, - sector_t start, sector_t end) -{ - int rv; - - spin_lock_bh(&marks->im_lock); - rv = _range_has_tag(&marks->im_tree, start, end, EXTENT_WRITTEN); - spin_unlock_bh(&marks->im_lock); - return rv; -} - -/* Marks sectors in [offest, offset_length) as having been initialized. - * All lengths are step-aligned, where step is min(pagesize, blocksize). - * Currently assumes offset is page-aligned - */ -int bl_mark_sectors_init(struct pnfs_inval_markings *marks, - sector_t offset, sector_t length) -{ - sector_t start, end; - - dprintk("%s(offset=%llu,len=%llu) enter\n", - __func__, (u64)offset, (u64)length); - - start = normalize(offset, marks->im_block_size); - end = normalize_up(offset + length, marks->im_block_size); - if (_preload_range(marks, start, end - start)) - goto outerr; - - spin_lock_bh(&marks->im_lock); - if (_set_range(&marks->im_tree, EXTENT_INITIALIZED, offset, length)) - goto out_unlock; - spin_unlock_bh(&marks->im_lock); - - return 0; - -out_unlock: - spin_unlock_bh(&marks->im_lock); -outerr: - return -ENOMEM; -} - -/* Marks sectors in [offest, offset+length) as having been written to disk. - * All lengths should be block aligned. - */ -static int mark_written_sectors(struct pnfs_inval_markings *marks, - sector_t offset, sector_t length) -{ - int status; - - dprintk("%s(offset=%llu,len=%llu) enter\n", __func__, - (u64)offset, (u64)length); - spin_lock_bh(&marks->im_lock); - status = _set_range(&marks->im_tree, EXTENT_WRITTEN, offset, length); - spin_unlock_bh(&marks->im_lock); - return status; -} - -static void print_short_extent(struct pnfs_block_short_extent *be) -{ - dprintk("PRINT SHORT EXTENT extent %p\n", be); - if (be) { - dprintk(" be_f_offset %llu\n", (u64)be->bse_f_offset); - dprintk(" be_length %llu\n", (u64)be->bse_length); - } -} - -static void print_clist(struct list_head *list, unsigned int count) -{ - struct pnfs_block_short_extent *be; - unsigned int i = 0; - - ifdebug(FACILITY) { - printk(KERN_DEBUG "****************\n"); - printk(KERN_DEBUG "Extent list looks like:\n"); - list_for_each_entry(be, list, bse_node) { - i++; - print_short_extent(be); - } - if (i != count) - printk(KERN_DEBUG "\n\nExpected %u entries\n\n\n", count); - printk(KERN_DEBUG "****************\n"); - } -} - -/* Note: In theory, we should do more checking that devid's match between - * old and new, but if they don't, the lists are too corrupt to salvage anyway. - */ -/* Note this is very similar to bl_add_merge_extent */ -static void add_to_commitlist(struct pnfs_block_layout *bl, - struct pnfs_block_short_extent *new) -{ - struct list_head *clist = &bl->bl_commit; - struct pnfs_block_short_extent *old, *save; - sector_t end = new->bse_f_offset + new->bse_length; - - dprintk("%s enter\n", __func__); - print_short_extent(new); - print_clist(clist, bl->bl_count); - bl->bl_count++; - /* Scan for proper place to insert, extending new to the left - * as much as possible. - */ - list_for_each_entry_safe(old, save, clist, bse_node) { - if (new->bse_f_offset < old->bse_f_offset) - break; - if (end <= old->bse_f_offset + old->bse_length) { - /* Range is already in list */ - bl->bl_count--; - kfree(new); - return; - } else if (new->bse_f_offset <= - old->bse_f_offset + old->bse_length) { - /* new overlaps or abuts existing be */ - if (new->bse_mdev == old->bse_mdev) { - /* extend new to fully replace old */ - new->bse_length += new->bse_f_offset - - old->bse_f_offset; - new->bse_f_offset = old->bse_f_offset; - list_del(&old->bse_node); - bl->bl_count--; - kfree(old); - } - } - } - /* Note that if we never hit the above break, old will not point to a - * valid extent. However, in that case &old->bse_node==list. - */ - list_add_tail(&new->bse_node, &old->bse_node); - /* Scan forward for overlaps. If we find any, extend new and - * remove the overlapped extent. - */ - old = list_prepare_entry(new, clist, bse_node); - list_for_each_entry_safe_continue(old, save, clist, bse_node) { - if (end < old->bse_f_offset) - break; - /* new overlaps or abuts old */ - if (new->bse_mdev == old->bse_mdev) { - if (end < old->bse_f_offset + old->bse_length) { - /* extend new to fully cover old */ - end = old->bse_f_offset + old->bse_length; - new->bse_length = end - new->bse_f_offset; - } - list_del(&old->bse_node); - bl->bl_count--; - kfree(old); - } - } - dprintk("%s: after merging\n", __func__); - print_clist(clist, bl->bl_count); -} - -/* Note the range described by offset, length is guaranteed to be contained - * within be. - * new will be freed, either by this function or add_to_commitlist if they - * decide not to use it, or after LAYOUTCOMMIT uses it in the commitlist. - */ -int bl_mark_for_commit(struct pnfs_block_extent *be, - sector_t offset, sector_t length, - struct pnfs_block_short_extent *new) -{ - sector_t new_end, end = offset + length; - struct pnfs_block_layout *bl = container_of(be->be_inval, - struct pnfs_block_layout, - bl_inval); - - mark_written_sectors(be->be_inval, offset, length); - /* We want to add the range to commit list, but it must be - * block-normalized, and verified that the normalized range has - * been entirely written to disk. - */ - new->bse_f_offset = offset; - offset = normalize(offset, bl->bl_blocksize); - if (offset < new->bse_f_offset) { - if (is_range_written(be->be_inval, offset, new->bse_f_offset)) - new->bse_f_offset = offset; - else - new->bse_f_offset = offset + bl->bl_blocksize; - } - new_end = normalize_up(end, bl->bl_blocksize); - if (end < new_end) { - if (is_range_written(be->be_inval, end, new_end)) - end = new_end; - else - end = new_end - bl->bl_blocksize; - } - if (end <= new->bse_f_offset) { - kfree(new); - return 0; - } - new->bse_length = end - new->bse_f_offset; - new->bse_devid = be->be_devid; - new->bse_mdev = be->be_mdev; - - spin_lock(&bl->bl_ext_lock); - add_to_commitlist(bl, new); - spin_unlock(&bl->bl_ext_lock); - return 0; -} - -static void print_bl_extent(struct pnfs_block_extent *be) -{ - dprintk("PRINT EXTENT extent %p\n", be); - if (be) { - dprintk(" be_f_offset %llu\n", (u64)be->be_f_offset); - dprintk(" be_length %llu\n", (u64)be->be_length); - dprintk(" be_v_offset %llu\n", (u64)be->be_v_offset); - dprintk(" be_state %d\n", be->be_state); - } -} - -static void -destroy_extent(struct kref *kref) -{ - struct pnfs_block_extent *be; - - be = container_of(kref, struct pnfs_block_extent, be_refcnt); - dprintk("%s be=%p\n", __func__, be); - kfree(be); -} - -void -bl_put_extent(struct pnfs_block_extent *be) -{ - if (be) { - dprintk("%s enter %p (%i)\n", __func__, be, - atomic_read(&be->be_refcnt.refcount)); - kref_put(&be->be_refcnt, destroy_extent); - } -} - -struct pnfs_block_extent *bl_alloc_extent(void) -{ - struct pnfs_block_extent *be; - - be = kmalloc(sizeof(struct pnfs_block_extent), GFP_NOFS); - if (!be) - return NULL; - INIT_LIST_HEAD(&be->be_node); - kref_init(&be->be_refcnt); - be->be_inval = NULL; - return be; -} - -static void print_elist(struct list_head *list) -{ - struct pnfs_block_extent *be; - dprintk("****************\n"); - dprintk("Extent list looks like:\n"); - list_for_each_entry(be, list, be_node) { - print_bl_extent(be); - } - dprintk("****************\n"); -} - -static inline int -extents_consistent(struct pnfs_block_extent *old, struct pnfs_block_extent *new) -{ - /* Note this assumes new->be_f_offset >= old->be_f_offset */ - return (new->be_state == old->be_state) && - ((new->be_state == PNFS_BLOCK_NONE_DATA) || - ((new->be_v_offset - old->be_v_offset == - new->be_f_offset - old->be_f_offset) && - new->be_mdev == old->be_mdev)); -} - -/* Adds new to appropriate list in bl, modifying new and removing existing - * extents as appropriate to deal with overlaps. - * - * See bl_find_get_extent for list constraints. - * - * Refcount on new is already set. If end up not using it, or error out, - * need to put the reference. - * - * bl->bl_ext_lock is held by caller. - */ -int -bl_add_merge_extent(struct pnfs_block_layout *bl, - struct pnfs_block_extent *new) -{ - struct pnfs_block_extent *be, *tmp; - sector_t end = new->be_f_offset + new->be_length; - struct list_head *list; - - dprintk("%s enter with be=%p\n", __func__, new); - print_bl_extent(new); - list = &bl->bl_extents[bl_choose_list(new->be_state)]; - print_elist(list); - - /* Scan for proper place to insert, extending new to the left - * as much as possible. - */ - list_for_each_entry_safe_reverse(be, tmp, list, be_node) { - if (new->be_f_offset >= be->be_f_offset + be->be_length) - break; - if (new->be_f_offset >= be->be_f_offset) { - if (end <= be->be_f_offset + be->be_length) { - /* new is a subset of existing be*/ - if (extents_consistent(be, new)) { - dprintk("%s: new is subset, ignoring\n", - __func__); - bl_put_extent(new); - return 0; - } else { - goto out_err; - } - } else { - /* |<-- be -->| - * |<-- new -->| */ - if (extents_consistent(be, new)) { - /* extend new to fully replace be */ - new->be_length += new->be_f_offset - - be->be_f_offset; - new->be_f_offset = be->be_f_offset; - new->be_v_offset = be->be_v_offset; - dprintk("%s: removing %p\n", __func__, be); - list_del(&be->be_node); - bl_put_extent(be); - } else { - goto out_err; - } - } - } else if (end >= be->be_f_offset + be->be_length) { - /* new extent overlap existing be */ - if (extents_consistent(be, new)) { - /* extend new to fully replace be */ - dprintk("%s: removing %p\n", __func__, be); - list_del(&be->be_node); - bl_put_extent(be); - } else { - goto out_err; - } - } else if (end > be->be_f_offset) { - /* |<-- be -->| - *|<-- new -->| */ - if (extents_consistent(new, be)) { - /* extend new to fully replace be */ - new->be_length += be->be_f_offset + be->be_length - - new->be_f_offset - new->be_length; - dprintk("%s: removing %p\n", __func__, be); - list_del(&be->be_node); - bl_put_extent(be); - } else { - goto out_err; - } - } - } - /* Note that if we never hit the above break, be will not point to a - * valid extent. However, in that case &be->be_node==list. - */ - list_add(&new->be_node, &be->be_node); - dprintk("%s: inserting new\n", __func__); - print_elist(list); - /* FIXME - The per-list consistency checks have all been done, - * should now check cross-list consistency. - */ - return 0; - - out_err: - bl_put_extent(new); - return -EIO; -} - -/* Returns extent, or NULL. If a second READ extent exists, it is returned - * in cow_read, if given. - * - * The extents are kept in two seperate ordered lists, one for READ and NONE, - * one for READWRITE and INVALID. Within each list, we assume: - * 1. Extents are ordered by file offset. - * 2. For any given isect, there is at most one extents that matches. - */ -struct pnfs_block_extent * -bl_find_get_extent(struct pnfs_block_layout *bl, sector_t isect, - struct pnfs_block_extent **cow_read) -{ - struct pnfs_block_extent *be, *cow, *ret; - int i; - - dprintk("%s enter with isect %llu\n", __func__, (u64)isect); - cow = ret = NULL; - spin_lock(&bl->bl_ext_lock); - for (i = 0; i < EXTENT_LISTS; i++) { - list_for_each_entry_reverse(be, &bl->bl_extents[i], be_node) { - if (isect >= be->be_f_offset + be->be_length) - break; - if (isect >= be->be_f_offset) { - /* We have found an extent */ - dprintk("%s Get %p (%i)\n", __func__, be, - atomic_read(&be->be_refcnt.refcount)); - kref_get(&be->be_refcnt); - if (!ret) - ret = be; - else if (be->be_state != PNFS_BLOCK_READ_DATA) - bl_put_extent(be); - else - cow = be; - break; - } - } - if (ret && - (!cow_read || ret->be_state != PNFS_BLOCK_INVALID_DATA)) - break; - } - spin_unlock(&bl->bl_ext_lock); - if (cow_read) - *cow_read = cow; - print_bl_extent(ret); - return ret; -} - -/* Similar to bl_find_get_extent, but called with lock held, and ignores cow */ -static struct pnfs_block_extent * -bl_find_get_extent_locked(struct pnfs_block_layout *bl, sector_t isect) -{ - struct pnfs_block_extent *be, *ret = NULL; - int i; - - dprintk("%s enter with isect %llu\n", __func__, (u64)isect); - for (i = 0; i < EXTENT_LISTS; i++) { - if (ret) - break; - list_for_each_entry_reverse(be, &bl->bl_extents[i], be_node) { - if (isect >= be->be_f_offset + be->be_length) - break; - if (isect >= be->be_f_offset) { - /* We have found an extent */ - dprintk("%s Get %p (%i)\n", __func__, be, - atomic_read(&be->be_refcnt.refcount)); - kref_get(&be->be_refcnt); - ret = be; - break; - } - } - } - print_bl_extent(ret); - return ret; -} - -int -encode_pnfs_block_layoutupdate(struct pnfs_block_layout *bl, - struct xdr_stream *xdr, - const struct nfs4_layoutcommit_args *arg) -{ - struct pnfs_block_short_extent *lce, *save; - unsigned int count = 0; - __be32 *p, *xdr_start; - - dprintk("%s enter\n", __func__); - /* BUG - creation of bl_commit is buggy - need to wait for - * entire block to be marked WRITTEN before it can be added. - */ - spin_lock(&bl->bl_ext_lock); - /* Want to adjust for possible truncate */ - /* We now want to adjust argument range */ - - /* XDR encode the ranges found */ - xdr_start = xdr_reserve_space(xdr, 8); - if (!xdr_start) - goto out; - list_for_each_entry_safe(lce, save, &bl->bl_commit, bse_node) { - p = xdr_reserve_space(xdr, 7 * 4 + sizeof(lce->bse_devid.data)); - if (!p) - break; - p = xdr_encode_opaque_fixed(p, lce->bse_devid.data, NFS4_DEVICEID4_SIZE); - p = xdr_encode_hyper(p, lce->bse_f_offset << SECTOR_SHIFT); - p = xdr_encode_hyper(p, lce->bse_length << SECTOR_SHIFT); - p = xdr_encode_hyper(p, 0LL); - *p++ = cpu_to_be32(PNFS_BLOCK_READWRITE_DATA); - list_move_tail(&lce->bse_node, &bl->bl_committing); - bl->bl_count--; - count++; - } - xdr_start[0] = cpu_to_be32((xdr->p - xdr_start - 1) * 4); - xdr_start[1] = cpu_to_be32(count); -out: - spin_unlock(&bl->bl_ext_lock); - dprintk("%s found %i ranges\n", __func__, count); - return 0; -} - -/* Helper function to set_to_rw that initialize a new extent */ -static void -_prep_new_extent(struct pnfs_block_extent *new, - struct pnfs_block_extent *orig, - sector_t offset, sector_t length, int state) -{ - kref_init(&new->be_refcnt); - /* don't need to INIT_LIST_HEAD(&new->be_node) */ - memcpy(&new->be_devid, &orig->be_devid, sizeof(struct nfs4_deviceid)); - new->be_mdev = orig->be_mdev; - new->be_f_offset = offset; - new->be_length = length; - new->be_v_offset = orig->be_v_offset - orig->be_f_offset + offset; - new->be_state = state; - new->be_inval = orig->be_inval; -} - -/* Tries to merge be with extent in front of it in list. - * Frees storage if not used. - */ -static struct pnfs_block_extent * -_front_merge(struct pnfs_block_extent *be, struct list_head *head, - struct pnfs_block_extent *storage) -{ - struct pnfs_block_extent *prev; - - if (!storage) - goto no_merge; - if (&be->be_node == head || be->be_node.prev == head) - goto no_merge; - prev = list_entry(be->be_node.prev, struct pnfs_block_extent, be_node); - if ((prev->be_f_offset + prev->be_length != be->be_f_offset) || - !extents_consistent(prev, be)) - goto no_merge; - _prep_new_extent(storage, prev, prev->be_f_offset, - prev->be_length + be->be_length, prev->be_state); - list_replace(&prev->be_node, &storage->be_node); - bl_put_extent(prev); - list_del(&be->be_node); - bl_put_extent(be); - return storage; - - no_merge: - kfree(storage); - return be; -} - -static u64 -set_to_rw(struct pnfs_block_layout *bl, u64 offset, u64 length) -{ - u64 rv = offset + length; - struct pnfs_block_extent *be, *e1, *e2, *e3, *new, *old; - struct pnfs_block_extent *children[3]; - struct pnfs_block_extent *merge1 = NULL, *merge2 = NULL; - int i = 0, j; - - dprintk("%s(%llu, %llu)\n", __func__, offset, length); - /* Create storage for up to three new extents e1, e2, e3 */ - e1 = kmalloc(sizeof(*e1), GFP_ATOMIC); - e2 = kmalloc(sizeof(*e2), GFP_ATOMIC); - e3 = kmalloc(sizeof(*e3), GFP_ATOMIC); - /* BUG - we are ignoring any failure */ - if (!e1 || !e2 || !e3) - goto out_nosplit; - - spin_lock(&bl->bl_ext_lock); - be = bl_find_get_extent_locked(bl, offset); - rv = be->be_f_offset + be->be_length; - if (be->be_state != PNFS_BLOCK_INVALID_DATA) { - spin_unlock(&bl->bl_ext_lock); - goto out_nosplit; - } - /* Add e* to children, bumping e*'s krefs */ - if (be->be_f_offset != offset) { - _prep_new_extent(e1, be, be->be_f_offset, - offset - be->be_f_offset, - PNFS_BLOCK_INVALID_DATA); - children[i++] = e1; - print_bl_extent(e1); - } else - merge1 = e1; - _prep_new_extent(e2, be, offset, - min(length, be->be_f_offset + be->be_length - offset), - PNFS_BLOCK_READWRITE_DATA); - children[i++] = e2; - print_bl_extent(e2); - if (offset + length < be->be_f_offset + be->be_length) { - _prep_new_extent(e3, be, e2->be_f_offset + e2->be_length, - be->be_f_offset + be->be_length - - offset - length, - PNFS_BLOCK_INVALID_DATA); - children[i++] = e3; - print_bl_extent(e3); - } else - merge2 = e3; - - /* Remove be from list, and insert the e* */ - /* We don't get refs on e*, since this list is the base reference - * set when init'ed. - */ - if (i < 3) - children[i] = NULL; - new = children[0]; - list_replace(&be->be_node, &new->be_node); - bl_put_extent(be); - new = _front_merge(new, &bl->bl_extents[RW_EXTENT], merge1); - for (j = 1; j < i; j++) { - old = new; - new = children[j]; - list_add(&new->be_node, &old->be_node); - } - if (merge2) { - /* This is a HACK, should just create a _back_merge function */ - new = list_entry(new->be_node.next, - struct pnfs_block_extent, be_node); - new = _front_merge(new, &bl->bl_extents[RW_EXTENT], merge2); - } - spin_unlock(&bl->bl_ext_lock); - - /* Since we removed the base reference above, be is now scheduled for - * destruction. - */ - bl_put_extent(be); - dprintk("%s returns %llu after split\n", __func__, rv); - return rv; - - out_nosplit: - kfree(e1); - kfree(e2); - kfree(e3); - dprintk("%s returns %llu without splitting\n", __func__, rv); - return rv; -} - -void -clean_pnfs_block_layoutupdate(struct pnfs_block_layout *bl, - const struct nfs4_layoutcommit_args *arg, - int status) -{ - struct pnfs_block_short_extent *lce, *save; - - dprintk("%s status %d\n", __func__, status); - list_for_each_entry_safe(lce, save, &bl->bl_committing, bse_node) { - if (likely(!status)) { - u64 offset = lce->bse_f_offset; - u64 end = offset + lce->bse_length; - - do { - offset = set_to_rw(bl, offset, end - offset); - } while (offset < end); - list_del(&lce->bse_node); - - kfree(lce); - } else { - list_del(&lce->bse_node); - spin_lock(&bl->bl_ext_lock); - add_to_commitlist(bl, lce); - spin_unlock(&bl->bl_ext_lock); - } - } -} - -int bl_push_one_short_extent(struct pnfs_inval_markings *marks) -{ - struct pnfs_block_short_extent *new; - - new = kmalloc(sizeof(*new), GFP_NOFS); - if (unlikely(!new)) - return -ENOMEM; - - spin_lock_bh(&marks->im_lock); - list_add(&new->bse_node, &marks->im_extents); - spin_unlock_bh(&marks->im_lock); - - return 0; -} - -struct pnfs_block_short_extent * -bl_pop_one_short_extent(struct pnfs_inval_markings *marks) -{ - struct pnfs_block_short_extent *rv = NULL; - - spin_lock_bh(&marks->im_lock); - if (!list_empty(&marks->im_extents)) { - rv = list_entry((&marks->im_extents)->next, - struct pnfs_block_short_extent, bse_node); - list_del_init(&rv->bse_node); - } - spin_unlock_bh(&marks->im_lock); - - return rv; -} - -void bl_free_short_extents(struct pnfs_inval_markings *marks, int num_to_free) -{ - struct pnfs_block_short_extent *se = NULL, *tmp; - - if (num_to_free <= 0) - return; - - spin_lock(&marks->im_lock); - list_for_each_entry_safe(se, tmp, &marks->im_extents, bse_node) { - list_del(&se->bse_node); - kfree(se); - if (--num_to_free == 0) - break; - } - spin_unlock(&marks->im_lock); - - BUG_ON(num_to_free > 0); -} diff --git a/fs/nfs/blocklayout/rpc_pipefs.c b/fs/nfs/blocklayout/rpc_pipefs.c new file mode 100644 index 000000000000..8d04bda2bd2e --- /dev/null +++ b/fs/nfs/blocklayout/rpc_pipefs.c @@ -0,0 +1,285 @@ +/* + * Copyright (c) 2006,2007 The Regents of the University of Michigan. + * All rights reserved. + * + * Andy Adamson <andros@citi.umich.edu> + * Fred Isaman <iisaman@umich.edu> + * + * permission is granted to use, copy, create derivative works and + * redistribute this software and such derivative works for any purpose, + * so long as the name of the university of michigan is not used in + * any advertising or publicity pertaining to the use or distribution + * of this software without specific, written prior authorization. if + * the above copyright notice or any other identification of the + * university of michigan is included in any copy of any portion of + * this software, then the disclaimer below must also be included. + * + * this software is provided as is, without representation from the + * university of michigan as to its fitness for any purpose, and without + * warranty by the university of michigan of any kind, either express + * or implied, including without limitation the implied warranties of + * merchantability and fitness for a particular purpose. the regents + * of the university of michigan shall not be liable for any damages, + * including special, indirect, incidental, or consequential damages, + * with respect to any claim arising out or in connection with the use + * of the software, even if it has been or is hereafter advised of the + * possibility of such damages. + */ + +#include <linux/module.h> +#include <linux/genhd.h> +#include <linux/blkdev.h> + +#include "blocklayout.h" + +#define NFSDBG_FACILITY NFSDBG_PNFS_LD + +static void +nfs4_encode_simple(__be32 *p, struct pnfs_block_volume *b) +{ + int i; + + *p++ = cpu_to_be32(1); + *p++ = cpu_to_be32(b->type); + *p++ = cpu_to_be32(b->simple.nr_sigs); + for (i = 0; i < b->simple.nr_sigs; i++) { + p = xdr_encode_hyper(p, b->simple.sigs[i].offset); + p = xdr_encode_opaque(p, b->simple.sigs[i].sig, + b->simple.sigs[i].sig_len); + } +} + +dev_t +bl_resolve_deviceid(struct nfs_server *server, struct pnfs_block_volume *b, + gfp_t gfp_mask) +{ + struct net *net = server->nfs_client->cl_net; + struct nfs_net *nn = net_generic(net, nfs_net_id); + struct bl_dev_msg *reply = &nn->bl_mount_reply; + struct bl_pipe_msg bl_pipe_msg; + struct rpc_pipe_msg *msg = &bl_pipe_msg.msg; + struct bl_msg_hdr *bl_msg; + DECLARE_WAITQUEUE(wq, current); + dev_t dev = 0; + int rc; + + dprintk("%s CREATING PIPEFS MESSAGE\n", __func__); + + bl_pipe_msg.bl_wq = &nn->bl_wq; + + b->simple.len += 4; /* single volume */ + if (b->simple.len > PAGE_SIZE) + return -EIO; + + memset(msg, 0, sizeof(*msg)); + msg->len = sizeof(*bl_msg) + b->simple.len; + msg->data = kzalloc(msg->len, gfp_mask); + if (!msg->data) + goto out; + + bl_msg = msg->data; + bl_msg->type = BL_DEVICE_MOUNT, + bl_msg->totallen = b->simple.len; + nfs4_encode_simple(msg->data + sizeof(*bl_msg), b); + + dprintk("%s CALLING USERSPACE DAEMON\n", __func__); + add_wait_queue(&nn->bl_wq, &wq); + rc = rpc_queue_upcall(nn->bl_device_pipe, msg); + if (rc < 0) { + remove_wait_queue(&nn->bl_wq, &wq); + goto out; + } + + set_current_state(TASK_UNINTERRUPTIBLE); + schedule(); + __set_current_state(TASK_RUNNING); + remove_wait_queue(&nn->bl_wq, &wq); + + if (reply->status != BL_DEVICE_REQUEST_PROC) { + printk(KERN_WARNING "%s failed to decode device: %d\n", + __func__, reply->status); + goto out; + } + + dev = MKDEV(reply->major, reply->minor); +out: + kfree(msg->data); + return dev; +} + +static ssize_t bl_pipe_downcall(struct file *filp, const char __user *src, + size_t mlen) +{ + struct nfs_net *nn = net_generic(filp->f_dentry->d_sb->s_fs_info, + nfs_net_id); + + if (mlen != sizeof (struct bl_dev_msg)) + return -EINVAL; + + if (copy_from_user(&nn->bl_mount_reply, src, mlen) != 0) + return -EFAULT; + + wake_up(&nn->bl_wq); + + return mlen; +} + +static void bl_pipe_destroy_msg(struct rpc_pipe_msg *msg) +{ + struct bl_pipe_msg *bl_pipe_msg = + container_of(msg, struct bl_pipe_msg, msg); + + if (msg->errno >= 0) + return; + wake_up(bl_pipe_msg->bl_wq); +} + +static const struct rpc_pipe_ops bl_upcall_ops = { + .upcall = rpc_pipe_generic_upcall, + .downcall = bl_pipe_downcall, + .destroy_msg = bl_pipe_destroy_msg, +}; + +static struct dentry *nfs4blocklayout_register_sb(struct super_block *sb, + struct rpc_pipe *pipe) +{ + struct dentry *dir, *dentry; + + dir = rpc_d_lookup_sb(sb, NFS_PIPE_DIRNAME); + if (dir == NULL) + return ERR_PTR(-ENOENT); + dentry = rpc_mkpipe_dentry(dir, "blocklayout", NULL, pipe); + dput(dir); + return dentry; +} + +static void nfs4blocklayout_unregister_sb(struct super_block *sb, + struct rpc_pipe *pipe) +{ + if (pipe->dentry) + rpc_unlink(pipe->dentry); +} + +static int rpc_pipefs_event(struct notifier_block *nb, unsigned long event, + void *ptr) +{ + struct super_block *sb = ptr; + struct net *net = sb->s_fs_info; + struct nfs_net *nn = net_generic(net, nfs_net_id); + struct dentry *dentry; + int ret = 0; + + if (!try_module_get(THIS_MODULE)) + return 0; + + if (nn->bl_device_pipe == NULL) { + module_put(THIS_MODULE); + return 0; + } + + switch (event) { + case RPC_PIPEFS_MOUNT: + dentry = nfs4blocklayout_register_sb(sb, nn->bl_device_pipe); + if (IS_ERR(dentry)) { + ret = PTR_ERR(dentry); + break; + } + nn->bl_device_pipe->dentry = dentry; + break; + case RPC_PIPEFS_UMOUNT: + if (nn->bl_device_pipe->dentry) + nfs4blocklayout_unregister_sb(sb, nn->bl_device_pipe); + break; + default: + ret = -ENOTSUPP; + break; + } + module_put(THIS_MODULE); + return ret; +} + +static struct notifier_block nfs4blocklayout_block = { + .notifier_call = rpc_pipefs_event, +}; + +static struct dentry *nfs4blocklayout_register_net(struct net *net, + struct rpc_pipe *pipe) +{ + struct super_block *pipefs_sb; + struct dentry *dentry; + + pipefs_sb = rpc_get_sb_net(net); + if (!pipefs_sb) + return NULL; + dentry = nfs4blocklayout_register_sb(pipefs_sb, pipe); + rpc_put_sb_net(net); + return dentry; +} + +static void nfs4blocklayout_unregister_net(struct net *net, + struct rpc_pipe *pipe) +{ + struct super_block *pipefs_sb; + + pipefs_sb = rpc_get_sb_net(net); + if (pipefs_sb) { + nfs4blocklayout_unregister_sb(pipefs_sb, pipe); + rpc_put_sb_net(net); + } +} + +static int nfs4blocklayout_net_init(struct net *net) +{ + struct nfs_net *nn = net_generic(net, nfs_net_id); + struct dentry *dentry; + + init_waitqueue_head(&nn->bl_wq); + nn->bl_device_pipe = rpc_mkpipe_data(&bl_upcall_ops, 0); + if (IS_ERR(nn->bl_device_pipe)) + return PTR_ERR(nn->bl_device_pipe); + dentry = nfs4blocklayout_register_net(net, nn->bl_device_pipe); + if (IS_ERR(dentry)) { + rpc_destroy_pipe_data(nn->bl_device_pipe); + return PTR_ERR(dentry); + } + nn->bl_device_pipe->dentry = dentry; + return 0; +} + +static void nfs4blocklayout_net_exit(struct net *net) +{ + struct nfs_net *nn = net_generic(net, nfs_net_id); + + nfs4blocklayout_unregister_net(net, nn->bl_device_pipe); + rpc_destroy_pipe_data(nn->bl_device_pipe); + nn->bl_device_pipe = NULL; +} + +static struct pernet_operations nfs4blocklayout_net_ops = { + .init = nfs4blocklayout_net_init, + .exit = nfs4blocklayout_net_exit, +}; + +int __init bl_init_pipefs(void) +{ + int ret; + + ret = rpc_pipefs_notifier_register(&nfs4blocklayout_block); + if (ret) + goto out; + ret = register_pernet_subsys(&nfs4blocklayout_net_ops); + if (ret) + goto out_unregister_notifier; + return 0; + +out_unregister_notifier: + rpc_pipefs_notifier_unregister(&nfs4blocklayout_block); +out: + return ret; +} + +void __exit bl_cleanup_pipefs(void) +{ + rpc_pipefs_notifier_unregister(&nfs4blocklayout_block); + unregister_pernet_subsys(&nfs4blocklayout_net_ops); +} diff --git a/fs/nfs/callback.c b/fs/nfs/callback.c index 54de482143cc..b8fb3a4ef649 100644 --- a/fs/nfs/callback.c +++ b/fs/nfs/callback.c @@ -235,7 +235,7 @@ static int nfs_callback_start_svc(int minorversion, struct rpc_xprt *xprt, cb_info->serv = serv; cb_info->rqst = rqstp; - cb_info->task = kthread_run(callback_svc, cb_info->rqst, + cb_info->task = kthread_create(callback_svc, cb_info->rqst, "nfsv4.%u-svc", minorversion); if (IS_ERR(cb_info->task)) { ret = PTR_ERR(cb_info->task); @@ -244,6 +244,8 @@ static int nfs_callback_start_svc(int minorversion, struct rpc_xprt *xprt, cb_info->task = NULL; return ret; } + rqstp->rq_task = cb_info->task; + wake_up_process(cb_info->task); dprintk("nfs_callback_up: service started\n"); return 0; } diff --git a/fs/nfs/callback_proc.c b/fs/nfs/callback_proc.c index 41db5258e7a7..73466b934090 100644 --- a/fs/nfs/callback_proc.c +++ b/fs/nfs/callback_proc.c @@ -171,14 +171,26 @@ static u32 initiate_file_draining(struct nfs_client *clp, goto out; ino = lo->plh_inode; + + spin_lock(&ino->i_lock); + pnfs_set_layout_stateid(lo, &args->cbl_stateid, true); + spin_unlock(&ino->i_lock); + + pnfs_layoutcommit_inode(ino, false); + spin_lock(&ino->i_lock); if (test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags) || pnfs_mark_matching_lsegs_invalid(lo, &free_me_list, - &args->cbl_range)) + &args->cbl_range)) { rv = NFS4ERR_DELAY; - else - rv = NFS4ERR_NOMATCHING_LAYOUT; - pnfs_set_layout_stateid(lo, &args->cbl_stateid, true); + goto unlock; + } + + if (NFS_SERVER(ino)->pnfs_curr_ld->return_range) { + NFS_SERVER(ino)->pnfs_curr_ld->return_range(lo, + &args->cbl_range); + } +unlock: spin_unlock(&ino->i_lock); pnfs_free_lseg_list(&free_me_list); pnfs_put_layout_hdr(lo); @@ -277,9 +289,6 @@ __be32 nfs4_callback_devicenotify(struct cb_devicenotifyargs *args, } found: - if (dev->cbd_notify_type == NOTIFY_DEVICEID4_CHANGE) - dprintk("%s: NOTIFY_DEVICEID4_CHANGE not supported, " - "deleting instead\n", __func__); nfs4_delete_deviceid(server->pnfs_curr_ld, clp, &dev->cbd_dev_id); } diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 1c5ff6d58385..f9f4845db989 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -1252,6 +1252,7 @@ static int nfs_server_list_open(struct inode *inode, struct file *file) * set up the iterator to start reading from the server list and return the first item */ static void *nfs_server_list_start(struct seq_file *m, loff_t *_pos) + __acquires(&nn->nfs_client_lock) { struct nfs_net *nn = net_generic(seq_file_net(m), nfs_net_id); @@ -1274,6 +1275,7 @@ static void *nfs_server_list_next(struct seq_file *p, void *v, loff_t *pos) * clean up after reading from the transports list */ static void nfs_server_list_stop(struct seq_file *p, void *v) + __releases(&nn->nfs_client_lock) { struct nfs_net *nn = net_generic(seq_file_net(p), nfs_net_id); @@ -1318,7 +1320,7 @@ static int nfs_server_list_show(struct seq_file *m, void *v) */ static int nfs_volume_list_open(struct inode *inode, struct file *file) { - return seq_open_net(inode, file, &nfs_server_list_ops, + return seq_open_net(inode, file, &nfs_volume_list_ops, sizeof(struct seq_net_private)); } @@ -1326,6 +1328,7 @@ static int nfs_volume_list_open(struct inode *inode, struct file *file) * set up the iterator to start reading from the volume list and return the first item */ static void *nfs_volume_list_start(struct seq_file *m, loff_t *_pos) + __acquires(&nn->nfs_client_lock) { struct nfs_net *nn = net_generic(seq_file_net(m), nfs_net_id); @@ -1348,6 +1351,7 @@ static void *nfs_volume_list_next(struct seq_file *p, void *v, loff_t *pos) * clean up after reading from the transports list */ static void nfs_volume_list_stop(struct seq_file *p, void *v) + __releases(&nn->nfs_client_lock) { struct nfs_net *nn = net_generic(seq_file_net(p), nfs_net_id); @@ -1412,24 +1416,18 @@ int nfs_fs_proc_net_init(struct net *net) p = proc_create("volumes", S_IFREG|S_IRUGO, nn->proc_nfsfs, &nfs_volume_list_fops); if (!p) - goto error_2; + goto error_1; return 0; -error_2: - remove_proc_entry("servers", nn->proc_nfsfs); error_1: - remove_proc_entry("fs/nfsfs", NULL); + remove_proc_subtree("nfsfs", net->proc_net); error_0: return -ENOMEM; } void nfs_fs_proc_net_exit(struct net *net) { - struct nfs_net *nn = net_generic(net, nfs_net_id); - - remove_proc_entry("volumes", nn->proc_nfsfs); - remove_proc_entry("servers", nn->proc_nfsfs); - remove_proc_entry("fs/nfsfs", NULL); + remove_proc_subtree("nfsfs", net->proc_net); } /* diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c index 65ef6e00deee..dda4b8667c02 100644 --- a/fs/nfs/direct.c +++ b/fs/nfs/direct.c @@ -178,7 +178,6 @@ static int nfs_direct_set_or_cmp_hdr_verf(struct nfs_direct_req *dreq, return memcmp(verfp, &hdr->verf, sizeof(struct nfs_writeverf)); } -#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4) /* * nfs_direct_cmp_commit_data_verf - compare verifier for commit data * @dreq - direct request possibly spanning multiple servers @@ -197,7 +196,6 @@ static int nfs_direct_cmp_commit_data_verf(struct nfs_direct_req *dreq, WARN_ON_ONCE(verfp->committed < 0); return memcmp(verfp, &data->verf, sizeof(struct nfs_writeverf)); } -#endif /** * nfs_direct_IO - NFS address space operation for direct I/O @@ -576,7 +574,6 @@ out: return result; } -#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4) static void nfs_direct_write_reschedule(struct nfs_direct_req *dreq) { struct nfs_pageio_descriptor desc; @@ -700,17 +697,6 @@ static void nfs_direct_write_complete(struct nfs_direct_req *dreq, struct inode schedule_work(&dreq->work); /* Calls nfs_direct_write_schedule_work */ } -#else -static void nfs_direct_write_schedule_work(struct work_struct *work) -{ -} - -static void nfs_direct_write_complete(struct nfs_direct_req *dreq, struct inode *inode) -{ - nfs_direct_complete(dreq, true); -} -#endif - static void nfs_direct_write_completion(struct nfs_pgio_header *hdr) { struct nfs_direct_req *dreq = hdr->dreq; diff --git a/fs/nfs/file.c b/fs/nfs/file.c index 524dd80d1898..6920127c5eb7 100644 --- a/fs/nfs/file.c +++ b/fs/nfs/file.c @@ -36,6 +36,7 @@ #include "internal.h" #include "iostat.h" #include "fscache.h" +#include "pnfs.h" #include "nfstrace.h" @@ -327,6 +328,12 @@ static int nfs_want_read_modify_write(struct file *file, struct page *page, unsigned int offset = pos & (PAGE_CACHE_SIZE - 1); unsigned int end = offset + len; + if (pnfs_ld_read_whole_page(file->f_mapping->host)) { + if (!PageUptodate(page)) + return 1; + return 0; + } + if ((file->f_mode & FMODE_READ) && /* open for read? */ !PageUptodate(page) && /* Uptodate? */ !PagePrivate(page) && /* i/o request already? */ @@ -468,17 +475,26 @@ static int nfs_release_page(struct page *page, gfp_t gfp) dfprintk(PAGECACHE, "NFS: release_page(%p)\n", page); - /* Only do I/O if gfp is a superset of GFP_KERNEL, and we're not - * doing this memory reclaim for a fs-related allocation. + /* Always try to initiate a 'commit' if relevant, but only + * wait for it if __GFP_WAIT is set. Even then, only wait 1 + * second and only if the 'bdi' is not congested. + * Waiting indefinitely can cause deadlocks when the NFS + * server is on this machine, when a new TCP connection is + * needed and in other rare cases. There is no particular + * need to wait extensively here. A short wait has the + * benefit that someone else can worry about the freezer. */ - if (mapping && (gfp & GFP_KERNEL) == GFP_KERNEL && - !(current->flags & PF_FSTRANS)) { - int how = FLUSH_SYNC; - - /* Don't let kswapd deadlock waiting for OOM RPC calls */ - if (current_is_kswapd()) - how = 0; - nfs_commit_inode(mapping->host, how); + if (mapping) { + struct nfs_server *nfss = NFS_SERVER(mapping->host); + nfs_commit_inode(mapping->host, 0); + if ((gfp & __GFP_WAIT) && + !bdi_write_congested(&nfss->backing_dev_info)) { + wait_on_page_bit_killable_timeout(page, PG_private, + HZ); + if (PagePrivate(page)) + set_bdi_congested(&nfss->backing_dev_info, + BLK_RW_ASYNC); + } } /* If PagePrivate() is set, then the page is not freeable */ if (PagePrivate(page)) @@ -539,13 +555,25 @@ static int nfs_launder_page(struct page *page) static int nfs_swap_activate(struct swap_info_struct *sis, struct file *file, sector_t *span) { + int ret; + struct rpc_clnt *clnt = NFS_CLIENT(file->f_mapping->host); + *span = sis->pages; - return xs_swapper(NFS_CLIENT(file->f_mapping->host)->cl_xprt, 1); + + rcu_read_lock(); + ret = xs_swapper(rcu_dereference(clnt->cl_xprt), 1); + rcu_read_unlock(); + + return ret; } static void nfs_swap_deactivate(struct file *file) { - xs_swapper(NFS_CLIENT(file->f_mapping->host)->cl_xprt, 0); + struct rpc_clnt *clnt = NFS_CLIENT(file->f_mapping->host); + + rcu_read_lock(); + xs_swapper(rcu_dereference(clnt->cl_xprt), 0); + rcu_read_unlock(); } #endif diff --git a/fs/nfs/filelayout/filelayout.c b/fs/nfs/filelayout/filelayout.c index 1359c4a27393..abc5056999d6 100644 --- a/fs/nfs/filelayout/filelayout.c +++ b/fs/nfs/filelayout/filelayout.c @@ -265,7 +265,7 @@ filelayout_set_layoutcommit(struct nfs_pgio_header *hdr) { if (FILELAYOUT_LSEG(hdr->lseg)->commit_through_mds || - hdr->res.verf->committed == NFS_FILE_SYNC) + hdr->res.verf->committed != NFS_DATA_SYNC) return; pnfs_set_layoutcommit(hdr); @@ -403,6 +403,9 @@ static int filelayout_commit_done_cb(struct rpc_task *task, return -EAGAIN; } + if (data->verf.committed == NFS_UNSTABLE) + pnfs_commit_set_layoutcommit(data); + return 0; } @@ -646,18 +649,15 @@ filelayout_check_layout(struct pnfs_layout_hdr *lo, } /* find and reference the deviceid */ - d = nfs4_find_get_deviceid(NFS_SERVER(lo->plh_inode)->pnfs_curr_ld, - NFS_SERVER(lo->plh_inode)->nfs_client, id); - if (d == NULL) { - dsaddr = filelayout_get_device_info(lo->plh_inode, id, - lo->plh_lc_cred, gfp_flags); - if (dsaddr == NULL) - goto out; - } else - dsaddr = container_of(d, struct nfs4_file_layout_dsaddr, id_node); + d = nfs4_find_get_deviceid(NFS_SERVER(lo->plh_inode), id, + lo->plh_lc_cred, gfp_flags); + if (d == NULL) + goto out; + + dsaddr = container_of(d, struct nfs4_file_layout_dsaddr, id_node); /* Found deviceid is unavailable */ if (filelayout_test_devid_unavailable(&dsaddr->id_node)) - goto out_put; + goto out_put; fl->dsaddr = dsaddr; @@ -1269,11 +1269,12 @@ filelayout_search_commit_reqs(struct nfs_commit_info *cinfo, struct page *page) static void filelayout_retry_commit(struct nfs_commit_info *cinfo, int idx) { struct pnfs_ds_commit_info *fl_cinfo = cinfo->ds; - struct pnfs_commit_bucket *bucket = fl_cinfo->buckets; + struct pnfs_commit_bucket *bucket; struct pnfs_layout_segment *freeme; int i; - for (i = idx; i < fl_cinfo->nbuckets; i++, bucket++) { + for (i = idx; i < fl_cinfo->nbuckets; i++) { + bucket = &fl_cinfo->buckets[i]; if (list_empty(&bucket->committing)) continue; nfs_retry_commit(&bucket->committing, bucket->clseg, cinfo); @@ -1367,6 +1368,17 @@ out: cinfo->ds->ncommitting = 0; return PNFS_ATTEMPTED; } +static struct nfs4_deviceid_node * +filelayout_alloc_deviceid_node(struct nfs_server *server, + struct pnfs_device *pdev, gfp_t gfp_flags) +{ + struct nfs4_file_layout_dsaddr *dsaddr; + + dsaddr = nfs4_fl_alloc_deviceid_node(server, pdev, gfp_flags); + if (!dsaddr) + return NULL; + return &dsaddr->id_node; +} static void filelayout_free_deveiceid_node(struct nfs4_deviceid_node *d) @@ -1419,6 +1431,7 @@ static struct pnfs_layoutdriver_type filelayout_type = { .commit_pagelist = filelayout_commit_pagelist, .read_pagelist = filelayout_read_pagelist, .write_pagelist = filelayout_write_pagelist, + .alloc_deviceid_node = filelayout_alloc_deviceid_node, .free_deviceid_node = filelayout_free_deveiceid_node, }; diff --git a/fs/nfs/filelayout/filelayout.h b/fs/nfs/filelayout/filelayout.h index ffbddf2219ea..7c9f800c49d7 100644 --- a/fs/nfs/filelayout/filelayout.h +++ b/fs/nfs/filelayout/filelayout.h @@ -147,10 +147,11 @@ u32 nfs4_fl_calc_j_index(struct pnfs_layout_segment *lseg, loff_t offset); u32 nfs4_fl_calc_ds_index(struct pnfs_layout_segment *lseg, u32 j); struct nfs4_pnfs_ds *nfs4_fl_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx); + +extern struct nfs4_file_layout_dsaddr * +nfs4_fl_alloc_deviceid_node(struct nfs_server *server, + struct pnfs_device *pdev, gfp_t gfp_flags); extern void nfs4_fl_put_deviceid(struct nfs4_file_layout_dsaddr *dsaddr); extern void nfs4_fl_free_deviceid(struct nfs4_file_layout_dsaddr *dsaddr); -struct nfs4_file_layout_dsaddr * -filelayout_get_device_info(struct inode *inode, struct nfs4_deviceid *dev_id, - struct rpc_cred *cred, gfp_t gfp_flags); #endif /* FS_NFS_NFS4FILELAYOUT_H */ diff --git a/fs/nfs/filelayout/filelayoutdev.c b/fs/nfs/filelayout/filelayoutdev.c index 8540516f4d71..9bb806a76d99 100644 --- a/fs/nfs/filelayout/filelayoutdev.c +++ b/fs/nfs/filelayout/filelayoutdev.c @@ -484,8 +484,9 @@ out_err: } /* Decode opaque device data and return the result */ -static struct nfs4_file_layout_dsaddr* -decode_device(struct inode *ino, struct pnfs_device *pdev, gfp_t gfp_flags) +struct nfs4_file_layout_dsaddr * +nfs4_fl_alloc_deviceid_node(struct nfs_server *server, struct pnfs_device *pdev, + gfp_t gfp_flags) { int i; u32 cnt, num; @@ -570,10 +571,7 @@ decode_device(struct inode *ino, struct pnfs_device *pdev, gfp_t gfp_flags) dsaddr->stripe_indices = stripe_indices; stripe_indices = NULL; dsaddr->ds_num = num; - nfs4_init_deviceid_node(&dsaddr->id_node, - NFS_SERVER(ino)->pnfs_curr_ld, - NFS_SERVER(ino)->nfs_client, - &pdev->dev_id); + nfs4_init_deviceid_node(&dsaddr->id_node, server, &pdev->dev_id); INIT_LIST_HEAD(&dsaddrs); @@ -587,7 +585,7 @@ decode_device(struct inode *ino, struct pnfs_device *pdev, gfp_t gfp_flags) mp_count = be32_to_cpup(p); /* multipath count */ for (j = 0; j < mp_count; j++) { - da = decode_ds_addr(NFS_SERVER(ino)->nfs_client->cl_net, + da = decode_ds_addr(server->nfs_client->cl_net, &stream, gfp_flags); if (da) list_add_tail(&da->da_node, &dsaddrs); @@ -637,102 +635,6 @@ out_err: return NULL; } -/* - * Decode the opaque device specified in 'dev' and add it to the cache of - * available devices. - */ -static struct nfs4_file_layout_dsaddr * -decode_and_add_device(struct inode *inode, struct pnfs_device *dev, gfp_t gfp_flags) -{ - struct nfs4_deviceid_node *d; - struct nfs4_file_layout_dsaddr *n, *new; - - new = decode_device(inode, dev, gfp_flags); - if (!new) { - printk(KERN_WARNING "NFS: %s: Could not decode or add device\n", - __func__); - return NULL; - } - - d = nfs4_insert_deviceid_node(&new->id_node); - n = container_of(d, struct nfs4_file_layout_dsaddr, id_node); - if (n != new) { - nfs4_fl_free_deviceid(new); - return n; - } - - return new; -} - -/* - * Retrieve the information for dev_id, add it to the list - * of available devices, and return it. - */ -struct nfs4_file_layout_dsaddr * -filelayout_get_device_info(struct inode *inode, - struct nfs4_deviceid *dev_id, - struct rpc_cred *cred, - gfp_t gfp_flags) -{ - struct pnfs_device *pdev = NULL; - u32 max_resp_sz; - int max_pages; - struct page **pages = NULL; - struct nfs4_file_layout_dsaddr *dsaddr = NULL; - int rc, i; - struct nfs_server *server = NFS_SERVER(inode); - - /* - * Use the session max response size as the basis for setting - * GETDEVICEINFO's maxcount - */ - max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; - max_pages = nfs_page_array_len(0, max_resp_sz); - dprintk("%s inode %p max_resp_sz %u max_pages %d\n", - __func__, inode, max_resp_sz, max_pages); - - pdev = kzalloc(sizeof(struct pnfs_device), gfp_flags); - if (pdev == NULL) - return NULL; - - pages = kcalloc(max_pages, sizeof(struct page *), gfp_flags); - if (pages == NULL) { - kfree(pdev); - return NULL; - } - for (i = 0; i < max_pages; i++) { - pages[i] = alloc_page(gfp_flags); - if (!pages[i]) - goto out_free; - } - - memcpy(&pdev->dev_id, dev_id, sizeof(*dev_id)); - pdev->layout_type = LAYOUT_NFSV4_1_FILES; - pdev->pages = pages; - pdev->pgbase = 0; - pdev->pglen = max_resp_sz; - pdev->mincount = 0; - pdev->maxcount = max_resp_sz - nfs41_maxgetdevinfo_overhead; - - rc = nfs4_proc_getdeviceinfo(server, pdev, cred); - dprintk("%s getdevice info returns %d\n", __func__, rc); - if (rc) - goto out_free; - - /* - * Found new device, need to decode it and then add it to the - * list of known devices for this mountpoint. - */ - dsaddr = decode_and_add_device(inode, pdev, gfp_flags); -out_free: - for (i = 0; i < max_pages; i++) - __free_page(pages[i]); - kfree(pages); - kfree(pdev); - dprintk("<-- %s dsaddr %p\n", __func__, dsaddr); - return dsaddr; -} - void nfs4_fl_put_deviceid(struct nfs4_file_layout_dsaddr *dsaddr) { diff --git a/fs/nfs/fscache-index.c b/fs/nfs/fscache-index.c index 7cf2c4699b08..777b055063f6 100644 --- a/fs/nfs/fscache-index.c +++ b/fs/nfs/fscache-index.c @@ -74,11 +74,10 @@ static uint16_t nfs_server_get_key(const void *cookie_netfs_data, struct nfs_server_key *key = buffer; uint16_t len = sizeof(struct nfs_server_key); + memset(key, 0, len); key->nfsversion = clp->rpc_ops->version; key->family = clp->cl_addr.ss_family; - memset(key, 0, len); - switch (clp->cl_addr.ss_family) { case AF_INET: key->port = sin->sin_port; diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c index 577a36f0a510..141c9f4a40de 100644 --- a/fs/nfs/inode.c +++ b/fs/nfs/inode.c @@ -505,7 +505,9 @@ nfs_setattr(struct dentry *dentry, struct iattr *attr) attr->ia_valid &= ~ATTR_MODE; if (attr->ia_valid & ATTR_SIZE) { - if (!S_ISREG(inode->i_mode) || attr->ia_size == i_size_read(inode)) + BUG_ON(!S_ISREG(inode->i_mode)); + + if (attr->ia_size == i_size_read(inode)) attr->ia_valid &= ~ATTR_SIZE; } diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index 9056622d2230..14ae6f20a172 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -218,13 +218,6 @@ static inline void nfs_fs_proc_exit(void) int nfs_sockaddr_match_ipaddr(const struct sockaddr *, const struct sockaddr *); #endif -/* nfs3client.c */ -#if IS_ENABLED(CONFIG_NFS_V3) -struct nfs_server *nfs3_create_server(struct nfs_mount_info *, struct nfs_subversion *); -struct nfs_server *nfs3_clone_server(struct nfs_server *, struct nfs_fh *, - struct nfs_fattr *, rpc_authflavor_t); -#endif - /* callback_xdr.c */ extern struct svc_version nfs4_callback_version1; extern struct svc_version nfs4_callback_version4; diff --git a/fs/nfs/nfs3_fs.h b/fs/nfs/nfs3_fs.h new file mode 100644 index 000000000000..333ae4068506 --- /dev/null +++ b/fs/nfs/nfs3_fs.h @@ -0,0 +1,34 @@ +/* + * Copyright (C) 2014 Anna Schumaker. + * + * NFSv3-specific filesystem definitions and declarations + */ +#ifndef __LINUX_FS_NFS_NFS3_FS_H +#define __LINUX_FS_NFS_NFS3_FS_H + +/* + * nfs3acl.c + */ +#ifdef CONFIG_NFS_V3_ACL +extern struct posix_acl *nfs3_get_acl(struct inode *inode, int type); +extern int nfs3_set_acl(struct inode *inode, struct posix_acl *acl, int type); +extern int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl, + struct posix_acl *dfacl); +extern ssize_t nfs3_listxattr(struct dentry *, char *, size_t); +extern const struct xattr_handler *nfs3_xattr_handlers[]; +#else +static inline int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl, + struct posix_acl *dfacl) +{ + return 0; +} +#define nfs3_listxattr NULL +#endif /* CONFIG_NFS_V3_ACL */ + +/* nfs3client.c */ +struct nfs_server *nfs3_create_server(struct nfs_mount_info *, struct nfs_subversion *); +struct nfs_server *nfs3_clone_server(struct nfs_server *, struct nfs_fh *, + struct nfs_fattr *, rpc_authflavor_t); + + +#endif /* __LINUX_FS_NFS_NFS3_FS_H */ diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c index d0fec260132a..658e586ca438 100644 --- a/fs/nfs/nfs3acl.c +++ b/fs/nfs/nfs3acl.c @@ -7,6 +7,7 @@ #include <linux/nfsacl.h> #include "internal.h" +#include "nfs3_fs.h" #define NFSDBG_FACILITY NFSDBG_PROC @@ -129,7 +130,10 @@ static int __nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl, .rpc_argp = &args, .rpc_resp = &fattr, }; - int status; + int status = 0; + + if (acl == NULL && (!S_ISDIR(inode->i_mode) || dfacl == NULL)) + goto out; status = -EOPNOTSUPP; if (!nfs_server_capable(inode, NFS_CAP_ACLS)) diff --git a/fs/nfs/nfs3client.c b/fs/nfs/nfs3client.c index b3fc65ef39ca..8c1b437c5403 100644 --- a/fs/nfs/nfs3client.c +++ b/fs/nfs/nfs3client.c @@ -1,6 +1,7 @@ #include <linux/nfs_fs.h> #include <linux/nfs_mount.h> #include "internal.h" +#include "nfs3_fs.h" #ifdef CONFIG_NFS_V3_ACL static struct rpc_stat nfsacl_rpcstat = { &nfsacl_program }; diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c index 809670eba52a..524f9f837408 100644 --- a/fs/nfs/nfs3proc.c +++ b/fs/nfs/nfs3proc.c @@ -22,6 +22,7 @@ #include "iostat.h" #include "internal.h" +#include "nfs3_fs.h" #define NFSDBG_FACILITY NFSDBG_PROC diff --git a/fs/nfs/nfs3super.c b/fs/nfs/nfs3super.c index d6a98949af19..6af29c2da352 100644 --- a/fs/nfs/nfs3super.c +++ b/fs/nfs/nfs3super.c @@ -4,6 +4,7 @@ #include <linux/module.h> #include <linux/nfs_fs.h> #include "internal.h" +#include "nfs3_fs.h" #include "nfs.h" static struct nfs_subversion nfs_v3 = { diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 92193eddb41d..a8b855ab4e22 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -130,16 +130,15 @@ enum { */ struct nfs4_lock_state { - struct list_head ls_locks; /* Other lock stateids */ - struct nfs4_state * ls_state; /* Pointer to open state */ + struct list_head ls_locks; /* Other lock stateids */ + struct nfs4_state * ls_state; /* Pointer to open state */ #define NFS_LOCK_INITIALIZED 0 #define NFS_LOCK_LOST 1 - unsigned long ls_flags; + unsigned long ls_flags; struct nfs_seqid_counter ls_seqid; - nfs4_stateid ls_stateid; - atomic_t ls_count; - fl_owner_t ls_owner; - struct work_struct ls_release; + nfs4_stateid ls_stateid; + atomic_t ls_count; + fl_owner_t ls_owner; }; /* bits for nfs4_state->flags */ diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c index 53e435a95260..ffdb28d86cf8 100644 --- a/fs/nfs/nfs4client.c +++ b/fs/nfs/nfs4client.c @@ -482,6 +482,16 @@ int nfs40_walk_client_list(struct nfs_client *new, spin_lock(&nn->nfs_client_lock); list_for_each_entry(pos, &nn->nfs_client_list, cl_share_link) { + + if (pos->rpc_ops != new->rpc_ops) + continue; + + if (pos->cl_proto != new->cl_proto) + continue; + + if (pos->cl_minorversion != new->cl_minorversion) + continue; + /* If "pos" isn't marked ready, we can't trust the * remaining fields in "pos" */ if (pos->cl_cons_state > NFS_CS_READY) { @@ -501,15 +511,6 @@ int nfs40_walk_client_list(struct nfs_client *new, if (pos->cl_cons_state != NFS_CS_READY) continue; - if (pos->rpc_ops != new->rpc_ops) - continue; - - if (pos->cl_proto != new->cl_proto) - continue; - - if (pos->cl_minorversion != new->cl_minorversion) - continue; - if (pos->cl_clientid != new->cl_clientid) continue; @@ -622,6 +623,16 @@ int nfs41_walk_client_list(struct nfs_client *new, spin_lock(&nn->nfs_client_lock); list_for_each_entry(pos, &nn->nfs_client_list, cl_share_link) { + + if (pos->rpc_ops != new->rpc_ops) + continue; + + if (pos->cl_proto != new->cl_proto) + continue; + + if (pos->cl_minorversion != new->cl_minorversion) + continue; + /* If "pos" isn't marked ready, we can't trust the * remaining fields in "pos", especially the client * ID and serverowner fields. Wait for CREATE_SESSION @@ -647,15 +658,6 @@ int nfs41_walk_client_list(struct nfs_client *new, if (pos->cl_cons_state != NFS_CS_READY) continue; - if (pos->rpc_ops != new->rpc_ops) - continue; - - if (pos->cl_proto != new->cl_proto) - continue; - - if (pos->cl_minorversion != new->cl_minorversion) - continue; - if (!nfs4_match_clientids(pos, new)) continue; diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 75ae8d22f067..5aa55c132aa2 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -77,7 +77,7 @@ struct nfs4_opendata; static int _nfs4_proc_open(struct nfs4_opendata *data); static int _nfs4_recover_proc_open(struct nfs4_opendata *data); static int nfs4_do_fsinfo(struct nfs_server *, struct nfs_fh *, struct nfs_fsinfo *); -static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *); +static int nfs4_async_handle_error(struct rpc_task *, const struct nfs_server *, struct nfs4_state *, long *); static void nfs_fixup_referral_attributes(struct nfs_fattr *fattr); static int nfs4_proc_getattr(struct nfs_server *, struct nfs_fh *, struct nfs_fattr *, struct nfs4_label *label); static int _nfs4_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle, struct nfs_fattr *fattr, struct nfs4_label *label); @@ -314,20 +314,30 @@ static void nfs4_setup_readdir(u64 cookie, __be32 *verifier, struct dentry *dent kunmap_atomic(start); } +static long nfs4_update_delay(long *timeout) +{ + long ret; + if (!timeout) + return NFS4_POLL_RETRY_MAX; + if (*timeout <= 0) + *timeout = NFS4_POLL_RETRY_MIN; + if (*timeout > NFS4_POLL_RETRY_MAX) + *timeout = NFS4_POLL_RETRY_MAX; + ret = *timeout; + *timeout <<= 1; + return ret; +} + static int nfs4_delay(struct rpc_clnt *clnt, long *timeout) { int res = 0; might_sleep(); - if (*timeout <= 0) - *timeout = NFS4_POLL_RETRY_MIN; - if (*timeout > NFS4_POLL_RETRY_MAX) - *timeout = NFS4_POLL_RETRY_MAX; - freezable_schedule_timeout_killable_unsafe(*timeout); + freezable_schedule_timeout_killable_unsafe( + nfs4_update_delay(timeout)); if (fatal_signal_pending(current)) res = -ERESTARTSYS; - *timeout <<= 1; return res; } @@ -1307,15 +1317,13 @@ static struct nfs4_state *nfs4_try_open_cached(struct nfs4_opendata *opendata) int ret = -EAGAIN; for (;;) { + spin_lock(&state->owner->so_lock); if (can_open_cached(state, fmode, open_mode)) { - spin_lock(&state->owner->so_lock); - if (can_open_cached(state, fmode, open_mode)) { - update_open_stateflags(state, fmode); - spin_unlock(&state->owner->so_lock); - goto out_return_state; - } + update_open_stateflags(state, fmode); spin_unlock(&state->owner->so_lock); + goto out_return_state; } + spin_unlock(&state->owner->so_lock); rcu_read_lock(); delegation = rcu_dereference(nfsi->delegation); if (!can_open_delegated(delegation, fmode)) { @@ -2226,9 +2234,13 @@ static int _nfs4_open_and_get_state(struct nfs4_opendata *opendata, ret = _nfs4_proc_open(opendata); if (ret != 0) { if (ret == -ENOENT) { - d_drop(opendata->dentry); - d_add(opendata->dentry, NULL); - nfs_set_verifier(opendata->dentry, + dentry = opendata->dentry; + if (dentry->d_inode) + d_delete(dentry); + else if (d_unhashed(dentry)) + d_add(dentry, NULL); + + nfs_set_verifier(dentry, nfs_save_change_attribute(opendata->dir->d_inode)); } goto out; @@ -2560,6 +2572,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data) struct nfs4_closedata *calldata = data; struct nfs4_state *state = calldata->state; struct nfs_server *server = NFS_SERVER(calldata->inode); + nfs4_stateid *res_stateid = NULL; dprintk("%s: begin!\n", __func__); if (!nfs4_sequence_done(task, &calldata->res.seq_res)) @@ -2570,12 +2583,12 @@ static void nfs4_close_done(struct rpc_task *task, void *data) */ switch (task->tk_status) { case 0: - if (calldata->roc) + res_stateid = &calldata->res.stateid; + if (calldata->arg.fmode == 0 && calldata->roc) pnfs_roc_set_barrier(state->inode, calldata->roc_barrier); - nfs_clear_open_stateid(state, &calldata->res.stateid, 0); renew_lease(server, calldata->timestamp); - goto out_release; + break; case -NFS4ERR_ADMIN_REVOKED: case -NFS4ERR_STALE_STATEID: case -NFS4ERR_OLD_STATEID: @@ -2584,12 +2597,12 @@ static void nfs4_close_done(struct rpc_task *task, void *data) if (calldata->arg.fmode == 0) break; default: - if (nfs4_async_handle_error(task, server, state) == -EAGAIN) { + if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) { rpc_restart_call_prepare(task); goto out_release; } } - nfs_clear_open_stateid(state, NULL, calldata->arg.fmode); + nfs_clear_open_stateid(state, res_stateid, calldata->arg.fmode); out_release: nfs_release_seqid(calldata->arg.seqid); nfs_refresh_inode(calldata->inode, calldata->res.fattr); @@ -2601,6 +2614,7 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) struct nfs4_closedata *calldata = data; struct nfs4_state *state = calldata->state; struct inode *inode = calldata->inode; + bool is_rdonly, is_wronly, is_rdwr; int call_close = 0; dprintk("%s: begin!\n", __func__); @@ -2608,21 +2622,27 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data) goto out_wait; task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_OPEN_DOWNGRADE]; - calldata->arg.fmode = FMODE_READ|FMODE_WRITE; spin_lock(&state->owner->so_lock); + is_rdwr = test_bit(NFS_O_RDWR_STATE, &state->flags); + is_rdonly = test_bit(NFS_O_RDONLY_STATE, &state->flags); + is_wronly = test_bit(NFS_O_WRONLY_STATE, &state->flags); /* Calculate the change in open mode */ + calldata->arg.fmode = 0; if (state->n_rdwr == 0) { - if (state->n_rdonly == 0) { - call_close |= test_bit(NFS_O_RDONLY_STATE, &state->flags); - call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); - calldata->arg.fmode &= ~FMODE_READ; - } - if (state->n_wronly == 0) { - call_close |= test_bit(NFS_O_WRONLY_STATE, &state->flags); - call_close |= test_bit(NFS_O_RDWR_STATE, &state->flags); - calldata->arg.fmode &= ~FMODE_WRITE; - } - } + if (state->n_rdonly == 0) + call_close |= is_rdonly; + else if (is_rdonly) + calldata->arg.fmode |= FMODE_READ; + if (state->n_wronly == 0) + call_close |= is_wronly; + else if (is_wronly) + calldata->arg.fmode |= FMODE_WRITE; + } else if (is_rdwr) + calldata->arg.fmode |= FMODE_READ|FMODE_WRITE; + + if (calldata->arg.fmode == 0) + call_close |= is_rdwr; + if (!nfs4_valid_open_stateid(state)) call_close = 0; spin_unlock(&state->owner->so_lock); @@ -3205,7 +3225,9 @@ nfs4_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr, struct nfs4_label *label = NULL; int status; - if (pnfs_ld_layoutret_on_setattr(inode)) + if (pnfs_ld_layoutret_on_setattr(inode) && + sattr->ia_valid & ATTR_SIZE && + sattr->ia_size < i_size_read(inode)) pnfs_commit_and_return_layout(inode); nfs_fattr_init(fattr); @@ -3564,7 +3586,8 @@ static int nfs4_proc_unlink_done(struct rpc_task *task, struct inode *dir) if (!nfs4_sequence_done(task, &res->seq_res)) return 0; - if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) + if (nfs4_async_handle_error(task, res->server, NULL, + &data->timeout) == -EAGAIN) return 0; update_changeattr(dir, &res->cinfo); return 1; @@ -3597,7 +3620,7 @@ static int nfs4_proc_rename_done(struct rpc_task *task, struct inode *old_dir, if (!nfs4_sequence_done(task, &res->seq_res)) return 0; - if (nfs4_async_handle_error(task, res->server, NULL) == -EAGAIN) + if (nfs4_async_handle_error(task, res->server, NULL, &data->timeout) == -EAGAIN) return 0; update_changeattr(old_dir, &res->old_cinfo); @@ -4101,7 +4124,8 @@ static int nfs4_read_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr) trace_nfs4_read(hdr, task->tk_status); if (nfs4_async_handle_error(task, server, - hdr->args.context->state) == -EAGAIN) { + hdr->args.context->state, + NULL) == -EAGAIN) { rpc_restart_call_prepare(task); return -EAGAIN; } @@ -4169,10 +4193,11 @@ static int nfs4_write_done_cb(struct rpc_task *task, struct nfs_pgio_header *hdr) { struct inode *inode = hdr->inode; - + trace_nfs4_write(hdr, task->tk_status); if (nfs4_async_handle_error(task, NFS_SERVER(inode), - hdr->args.context->state) == -EAGAIN) { + hdr->args.context->state, + NULL) == -EAGAIN) { rpc_restart_call_prepare(task); return -EAGAIN; } @@ -4252,7 +4277,8 @@ static int nfs4_commit_done_cb(struct rpc_task *task, struct nfs_commit_data *da struct inode *inode = data->inode; trace_nfs4_commit(data, task->tk_status); - if (nfs4_async_handle_error(task, NFS_SERVER(inode), NULL) == -EAGAIN) { + if (nfs4_async_handle_error(task, NFS_SERVER(inode), + NULL, NULL) == -EAGAIN) { rpc_restart_call_prepare(task); return -EAGAIN; } @@ -4805,7 +4831,8 @@ out: static int -nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, struct nfs4_state *state) +nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, + struct nfs4_state *state, long *timeout) { struct nfs_client *clp = server->nfs_client; @@ -4855,6 +4882,8 @@ nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server, #endif /* CONFIG_NFS_V4_1 */ case -NFS4ERR_DELAY: nfs_inc_server_stats(server, NFSIOS_DELAY); + rpc_delay(task, nfs4_update_delay(timeout)); + goto restart_call; case -NFS4ERR_GRACE: rpc_delay(task, NFS4_POLL_RETRY_MAX); case -NFS4ERR_RETRY_UNCACHED_REP: @@ -5095,8 +5124,8 @@ static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata) pnfs_roc_set_barrier(data->inode, data->roc_barrier); break; default: - if (nfs4_async_handle_error(task, data->res.server, NULL) == - -EAGAIN) { + if (nfs4_async_handle_error(task, data->res.server, + NULL, NULL) == -EAGAIN) { rpc_restart_call_prepare(task); return; } @@ -5360,7 +5389,8 @@ static void nfs4_locku_done(struct rpc_task *task, void *data) case -NFS4ERR_EXPIRED: break; default: - if (nfs4_async_handle_error(task, calldata->server, NULL) == -EAGAIN) + if (nfs4_async_handle_error(task, calldata->server, + NULL, NULL) == -EAGAIN) rpc_restart_call_prepare(task); } nfs_release_seqid(calldata->arg.seqid); @@ -5966,7 +5996,8 @@ static void nfs4_release_lockowner_done(struct rpc_task *task, void *calldata) break; case -NFS4ERR_LEASE_MOVED: case -NFS4ERR_DELAY: - if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) + if (nfs4_async_handle_error(task, server, + NULL, NULL) == -EAGAIN) rpc_restart_call_prepare(task); } } @@ -7341,7 +7372,7 @@ static int nfs41_proc_async_sequence(struct nfs_client *clp, struct rpc_cred *cr int ret = 0; if ((renew_flags & NFS4_RENEW_TIMEOUT) == 0) - return 0; + return -EAGAIN; task = _nfs41_proc_sequence(clp, cred, false); if (IS_ERR(task)) ret = PTR_ERR(task); @@ -7571,14 +7602,19 @@ static void nfs4_layoutget_done(struct rpc_task *task, void *calldata) } else { LIST_HEAD(head); + /* + * Mark the bad layout state as invalid, then retry + * with the current stateid. + */ pnfs_mark_matching_lsegs_invalid(lo, &head, NULL); spin_unlock(&inode->i_lock); - /* Mark the bad layout state as invalid, then - * retry using the open stateid. */ pnfs_free_lseg_list(&head); + + task->tk_status = 0; + rpc_restart_call_prepare(task); } } - if (nfs4_async_handle_error(task, server, state) == -EAGAIN) + if (nfs4_async_handle_error(task, server, state, NULL) == -EAGAIN) rpc_restart_call_prepare(task); out: dprintk("<-- %s\n", __func__); @@ -7738,7 +7774,7 @@ static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata) case 0: break; case -NFS4ERR_DELAY: - if (nfs4_async_handle_error(task, server, NULL) != -EAGAIN) + if (nfs4_async_handle_error(task, server, NULL, NULL) != -EAGAIN) break; rpc_restart_call_prepare(task); return; @@ -7797,54 +7833,6 @@ int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) return status; } -/* - * Retrieve the list of Data Server devices from the MDS. - */ -static int _nfs4_getdevicelist(struct nfs_server *server, - const struct nfs_fh *fh, - struct pnfs_devicelist *devlist) -{ - struct nfs4_getdevicelist_args args = { - .fh = fh, - .layoutclass = server->pnfs_curr_ld->id, - }; - struct nfs4_getdevicelist_res res = { - .devlist = devlist, - }; - struct rpc_message msg = { - .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], - .rpc_argp = &args, - .rpc_resp = &res, - }; - int status; - - dprintk("--> %s\n", __func__); - status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, - &res.seq_res, 0); - dprintk("<-- %s status=%d\n", __func__, status); - return status; -} - -int nfs4_proc_getdevicelist(struct nfs_server *server, - const struct nfs_fh *fh, - struct pnfs_devicelist *devlist) -{ - struct nfs4_exception exception = { }; - int err; - - do { - err = nfs4_handle_exception(server, - _nfs4_getdevicelist(server, fh, devlist), - &exception); - } while (exception.retry); - - dprintk("%s: err=%d, num_devs=%u\n", __func__, - err, devlist->num_devs); - - return err; -} -EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); - static int _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev, @@ -7917,7 +7905,7 @@ nfs4_layoutcommit_done(struct rpc_task *task, void *calldata) case 0: break; default: - if (nfs4_async_handle_error(task, server, NULL) == -EAGAIN) { + if (nfs4_async_handle_error(task, server, NULL, NULL) == -EAGAIN) { rpc_restart_call_prepare(task); return; } @@ -8213,7 +8201,7 @@ static void nfs41_free_stateid_done(struct rpc_task *task, void *calldata) switch (task->tk_status) { case -NFS4ERR_DELAY: - if (nfs4_async_handle_error(task, data->server, NULL) == -EAGAIN) + if (nfs4_async_handle_error(task, data->server, NULL, NULL) == -EAGAIN) rpc_restart_call_prepare(task); } } diff --git a/fs/nfs/nfs4renewd.c b/fs/nfs/nfs4renewd.c index 1720d32ffa54..e1ba58c3d1ad 100644 --- a/fs/nfs/nfs4renewd.c +++ b/fs/nfs/nfs4renewd.c @@ -88,10 +88,18 @@ nfs4_renew_state(struct work_struct *work) } nfs_expire_all_delegations(clp); } else { + int ret; + /* Queue an asynchronous RENEW. */ - ops->sched_state_renewal(clp, cred, renew_flags); + ret = ops->sched_state_renewal(clp, cred, renew_flags); put_rpccred(cred); - goto out_exp; + switch (ret) { + default: + goto out_exp; + case -EAGAIN: + case -ENOMEM: + break; + } } } else { dprintk("%s: failed to call renewd. Reason: lease not expired \n", diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c index a043f618cd5a..5194933ed419 100644 --- a/fs/nfs/nfs4state.c +++ b/fs/nfs/nfs4state.c @@ -799,18 +799,6 @@ __nfs4_find_lock_state(struct nfs4_state *state, fl_owner_t fl_owner) return NULL; } -static void -free_lock_state_work(struct work_struct *work) -{ - struct nfs4_lock_state *lsp = container_of(work, - struct nfs4_lock_state, ls_release); - struct nfs4_state *state = lsp->ls_state; - struct nfs_server *server = state->owner->so_server; - struct nfs_client *clp = server->nfs_client; - - clp->cl_mvops->free_lock_state(server, lsp); -} - /* * Return a compatible lock_state. If no initialized lock_state structure * exists, return an uninitialized one. @@ -832,7 +820,6 @@ static struct nfs4_lock_state *nfs4_alloc_lock_state(struct nfs4_state *state, f if (lsp->ls_seqid.owner_id < 0) goto out_free; INIT_LIST_HEAD(&lsp->ls_locks); - INIT_WORK(&lsp->ls_release, free_lock_state_work); return lsp; out_free: kfree(lsp); @@ -896,12 +883,13 @@ void nfs4_put_lock_state(struct nfs4_lock_state *lsp) if (list_empty(&state->lock_states)) clear_bit(LK_STATE_IN_USE, &state->flags); spin_unlock(&state->state_lock); - if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) - queue_work(nfsiod_workqueue, &lsp->ls_release); - else { - server = state->owner->so_server; + server = state->owner->so_server; + if (test_bit(NFS_LOCK_INITIALIZED, &lsp->ls_flags)) { + struct nfs_client *clp = server->nfs_client; + + clp->cl_mvops->free_lock_state(server, lsp); + } else nfs4_free_lock_state(server, lsp); - } } static void nfs4_fl_copy_lock(struct file_lock *dst, struct file_lock *src) @@ -1717,7 +1705,8 @@ restart: if (status < 0) { set_bit(ops->owner_flag_bit, &sp->so_flags); nfs4_put_state_owner(sp); - return nfs4_recovery_handle_error(clp, status); + status = nfs4_recovery_handle_error(clp, status); + return (status != 0) ? status : -EAGAIN; } nfs4_put_state_owner(sp); @@ -1726,7 +1715,7 @@ restart: spin_unlock(&clp->cl_lock); } rcu_read_unlock(); - return status; + return 0; } static int nfs4_check_lease(struct nfs_client *clp) @@ -1773,7 +1762,6 @@ static int nfs4_handle_reclaim_lease_error(struct nfs_client *clp, int status) break; case -NFS4ERR_STALE_CLIENTID: clear_bit(NFS4CLNT_LEASE_CONFIRM, &clp->cl_state); - nfs4_state_clear_reclaim_reboot(clp); nfs4_state_start_reclaim_reboot(clp); break; case -NFS4ERR_CLID_INUSE: @@ -2357,6 +2345,7 @@ static void nfs4_state_manager(struct nfs_client *clp) status = nfs4_check_lease(clp); if (status < 0) goto out_error; + continue; } if (test_and_clear_bit(NFS4CLNT_MOVED, &clp->cl_state)) { @@ -2378,14 +2367,11 @@ static void nfs4_state_manager(struct nfs_client *clp) section = "reclaim reboot"; status = nfs4_do_reclaim(clp, clp->cl_mvops->reboot_recovery_ops); - if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) || - test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state)) - continue; - nfs4_state_end_reclaim_reboot(clp); - if (test_bit(NFS4CLNT_RECLAIM_NOGRACE, &clp->cl_state)) + if (status == -EAGAIN) continue; if (status < 0) goto out_error; + nfs4_state_end_reclaim_reboot(clp); } /* Now recover expired state... */ @@ -2393,9 +2379,7 @@ static void nfs4_state_manager(struct nfs_client *clp) section = "reclaim nograce"; status = nfs4_do_reclaim(clp, clp->cl_mvops->nograce_recovery_ops); - if (test_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state) || - test_bit(NFS4CLNT_SESSION_RESET, &clp->cl_state) || - test_bit(NFS4CLNT_RECLAIM_REBOOT, &clp->cl_state)) + if (status == -EAGAIN) continue; if (status < 0) goto out_error; diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index e13b59d8d9aa..005d03c5d274 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -362,25 +362,19 @@ static int nfs4_stat_to_errno(int); XDR_QUADLEN(NFS4_MAX_SESSIONID_LEN) + 5) #define encode_reclaim_complete_maxsz (op_encode_hdr_maxsz + 4) #define decode_reclaim_complete_maxsz (op_decode_hdr_maxsz + 4) -#define encode_getdevicelist_maxsz (op_encode_hdr_maxsz + 4 + \ - encode_verifier_maxsz) -#define decode_getdevicelist_maxsz (op_decode_hdr_maxsz + \ - 2 /* nfs_cookie4 gdlr_cookie */ + \ - decode_verifier_maxsz \ - /* verifier4 gdlr_verifier */ + \ - 1 /* gdlr_deviceid_list count */ + \ - XDR_QUADLEN(NFS4_PNFS_GETDEVLIST_MAXNUM * \ - NFS4_DEVICEID4_SIZE) \ - /* gdlr_deviceid_list */ + \ - 1 /* bool gdlr_eof */) -#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + 4 + \ - XDR_QUADLEN(NFS4_DEVICEID4_SIZE)) +#define encode_getdeviceinfo_maxsz (op_encode_hdr_maxsz + \ + XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \ + 1 /* layout type */ + \ + 1 /* maxcount */ + \ + 1 /* bitmap size */ + \ + 1 /* notification bitmap length */ + \ + 1 /* notification bitmap, word 0 */) #define decode_getdeviceinfo_maxsz (op_decode_hdr_maxsz + \ 1 /* layout type */ + \ 1 /* opaque devaddr4 length */ + \ /* devaddr4 payload is read into page */ \ 1 /* notification bitmap length */ + \ - 1 /* notification bitmap */) + 1 /* notification bitmap, word 0 */) #define encode_layoutget_maxsz (op_encode_hdr_maxsz + 10 + \ encode_stateid_maxsz) #define decode_layoutget_maxsz (op_decode_hdr_maxsz + 8 + \ @@ -395,7 +389,10 @@ static int nfs4_stat_to_errno(int); 2 /* last byte written */ + \ 1 /* nt_timechanged (false) */ + \ 1 /* layoutupdate4 layout type */ + \ - 1 /* NULL filelayout layoutupdate4 payload */) + 1 /* layoutupdate4 opaqueue len */) + /* the actual content of layoutupdate4 should + be allocated by drivers and spliced in + using xdr_write_pages */ #define decode_layoutcommit_maxsz (op_decode_hdr_maxsz + 3) #define encode_layoutreturn_maxsz (8 + op_encode_hdr_maxsz + \ encode_stateid_maxsz + \ @@ -809,14 +806,6 @@ static int nfs4_stat_to_errno(int); #define NFS4_dec_reclaim_complete_sz (compound_decode_hdr_maxsz + \ decode_sequence_maxsz + \ decode_reclaim_complete_maxsz) -#define NFS4_enc_getdevicelist_sz (compound_encode_hdr_maxsz + \ - encode_sequence_maxsz + \ - encode_putfh_maxsz + \ - encode_getdevicelist_maxsz) -#define NFS4_dec_getdevicelist_sz (compound_decode_hdr_maxsz + \ - decode_sequence_maxsz + \ - decode_putfh_maxsz + \ - decode_getdevicelist_maxsz) #define NFS4_enc_getdeviceinfo_sz (compound_encode_hdr_maxsz + \ encode_sequence_maxsz +\ encode_getdeviceinfo_maxsz) @@ -1927,24 +1916,6 @@ static void encode_sequence(struct xdr_stream *xdr, #ifdef CONFIG_NFS_V4_1 static void -encode_getdevicelist(struct xdr_stream *xdr, - const struct nfs4_getdevicelist_args *args, - struct compound_hdr *hdr) -{ - __be32 *p; - nfs4_verifier dummy = { - .data = "dummmmmy", - }; - - encode_op_hdr(xdr, OP_GETDEVICELIST, decode_getdevicelist_maxsz, hdr); - p = reserve_space(xdr, 16); - *p++ = cpu_to_be32(args->layoutclass); - *p++ = cpu_to_be32(NFS4_PNFS_GETDEVLIST_MAXNUM); - xdr_encode_hyper(p, 0ULL); /* cookie */ - encode_nfs4_verifier(xdr, &dummy); -} - -static void encode_getdeviceinfo(struct xdr_stream *xdr, const struct nfs4_getdeviceinfo_args *args, struct compound_hdr *hdr) @@ -1952,12 +1923,15 @@ encode_getdeviceinfo(struct xdr_stream *xdr, __be32 *p; encode_op_hdr(xdr, OP_GETDEVICEINFO, decode_getdeviceinfo_maxsz, hdr); - p = reserve_space(xdr, 12 + NFS4_DEVICEID4_SIZE); + p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 4 + 4); p = xdr_encode_opaque_fixed(p, args->pdev->dev_id.data, NFS4_DEVICEID4_SIZE); *p++ = cpu_to_be32(args->pdev->layout_type); *p++ = cpu_to_be32(args->pdev->maxcount); /* gdia_maxcount */ - *p++ = cpu_to_be32(0); /* bitmap length 0 */ + + p = reserve_space(xdr, 4 + 4); + *p++ = cpu_to_be32(1); /* bitmap length */ + *p++ = cpu_to_be32(NOTIFY_DEVICEID4_CHANGE | NOTIFY_DEVICEID4_DELETE); } static void @@ -1990,7 +1964,7 @@ encode_layoutget(struct xdr_stream *xdr, static int encode_layoutcommit(struct xdr_stream *xdr, struct inode *inode, - const struct nfs4_layoutcommit_args *args, + struct nfs4_layoutcommit_args *args, struct compound_hdr *hdr) { __be32 *p; @@ -2011,11 +1985,16 @@ encode_layoutcommit(struct xdr_stream *xdr, *p++ = cpu_to_be32(0); /* Never send time_modify_changed */ *p++ = cpu_to_be32(NFS_SERVER(args->inode)->pnfs_curr_ld->id);/* type */ - if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit) + if (NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit) { NFS_SERVER(inode)->pnfs_curr_ld->encode_layoutcommit( NFS_I(inode)->layout, xdr, args); - else - encode_uint32(xdr, 0); /* no layout-type payload */ + } else { + encode_uint32(xdr, args->layoutupdate_len); + if (args->layoutupdate_pages) { + xdr_write_pages(xdr, args->layoutupdate_pages, 0, + args->layoutupdate_len); + } + } return 0; } @@ -2893,24 +2872,6 @@ static void nfs4_xdr_enc_reclaim_complete(struct rpc_rqst *req, } /* - * Encode GETDEVICELIST request - */ -static void nfs4_xdr_enc_getdevicelist(struct rpc_rqst *req, - struct xdr_stream *xdr, - struct nfs4_getdevicelist_args *args) -{ - struct compound_hdr hdr = { - .minorversion = nfs4_xdr_minorversion(&args->seq_args), - }; - - encode_compound_hdr(xdr, req, &hdr); - encode_sequence(xdr, &args->seq_args, &hdr); - encode_putfh(xdr, args->fh, &hdr); - encode_getdevicelist(xdr, args, &hdr); - encode_nops(&hdr); -} - -/* * Encode GETDEVICEINFO request */ static void nfs4_xdr_enc_getdeviceinfo(struct rpc_rqst *req, @@ -5765,54 +5726,6 @@ out_overflow: } #if defined(CONFIG_NFS_V4_1) -/* - * TODO: Need to handle case when EOF != true; - */ -static int decode_getdevicelist(struct xdr_stream *xdr, - struct pnfs_devicelist *res) -{ - __be32 *p; - int status, i; - nfs4_verifier verftemp; - - status = decode_op_hdr(xdr, OP_GETDEVICELIST); - if (status) - return status; - - p = xdr_inline_decode(xdr, 8 + 8 + 4); - if (unlikely(!p)) - goto out_overflow; - - /* TODO: Skip cookie for now */ - p += 2; - - /* Read verifier */ - p = xdr_decode_opaque_fixed(p, verftemp.data, NFS4_VERIFIER_SIZE); - - res->num_devs = be32_to_cpup(p); - - dprintk("%s: num_dev %d\n", __func__, res->num_devs); - - if (res->num_devs > NFS4_PNFS_GETDEVLIST_MAXNUM) { - printk(KERN_ERR "NFS: %s too many result dev_num %u\n", - __func__, res->num_devs); - return -EIO; - } - - p = xdr_inline_decode(xdr, - res->num_devs * NFS4_DEVICEID4_SIZE + 4); - if (unlikely(!p)) - goto out_overflow; - for (i = 0; i < res->num_devs; i++) - p = xdr_decode_opaque_fixed(p, res->dev_id[i].data, - NFS4_DEVICEID4_SIZE); - res->eof = be32_to_cpup(p); - return 0; -out_overflow: - print_overflow_msg(__func__, xdr); - return -EIO; -} - static int decode_getdeviceinfo(struct xdr_stream *xdr, struct pnfs_device *pdev) { @@ -5862,9 +5775,16 @@ static int decode_getdeviceinfo(struct xdr_stream *xdr, p = xdr_inline_decode(xdr, 4 * len); if (unlikely(!p)) goto out_overflow; - for (i = 0; i < len; i++, p++) { - if (be32_to_cpup(p)) { - dprintk("%s: notifications not supported\n", + + if (be32_to_cpup(p++) & + ~(NOTIFY_DEVICEID4_CHANGE | NOTIFY_DEVICEID4_DELETE)) { + dprintk("%s: unsupported notification\n", + __func__); + } + + for (i = 1; i < len; i++) { + if (be32_to_cpup(p++)) { + dprintk("%s: unsupported notification\n", __func__); return -EIO; } @@ -7097,32 +7017,6 @@ static int nfs4_xdr_dec_reclaim_complete(struct rpc_rqst *rqstp, } /* - * Decode GETDEVICELIST response - */ -static int nfs4_xdr_dec_getdevicelist(struct rpc_rqst *rqstp, - struct xdr_stream *xdr, - struct nfs4_getdevicelist_res *res) -{ - struct compound_hdr hdr; - int status; - - dprintk("encoding getdevicelist!\n"); - - status = decode_compound_hdr(xdr, &hdr); - if (status != 0) - goto out; - status = decode_sequence(xdr, &res->seq_res, rqstp); - if (status != 0) - goto out; - status = decode_putfh(xdr); - if (status != 0) - goto out; - status = decode_getdevicelist(xdr, res->devlist); -out: - return status; -} - -/* * Decode GETDEVINFO response */ static int nfs4_xdr_dec_getdeviceinfo(struct rpc_rqst *rqstp, @@ -7490,7 +7384,6 @@ struct rpc_procinfo nfs4_procedures[] = { PROC(SECINFO_NO_NAME, enc_secinfo_no_name, dec_secinfo_no_name), PROC(TEST_STATEID, enc_test_stateid, dec_test_stateid), PROC(FREE_STATEID, enc_free_stateid, dec_free_stateid), - PROC(GETDEVICELIST, enc_getdevicelist, dec_getdevicelist), PROC(BIND_CONN_TO_SESSION, enc_bind_conn_to_session, dec_bind_conn_to_session), PROC(DESTROY_CLIENTID, enc_destroy_clientid, dec_destroy_clientid), diff --git a/fs/nfs/objlayout/objio_osd.c b/fs/nfs/objlayout/objio_osd.c index ae05278b3761..c6e4bda63000 100644 --- a/fs/nfs/objlayout/objio_osd.c +++ b/fs/nfs/objlayout/objio_osd.c @@ -60,52 +60,6 @@ objio_free_deviceid_node(struct nfs4_deviceid_node *d) kfree(de); } -static struct objio_dev_ent *_dev_list_find(const struct nfs_server *nfss, - const struct nfs4_deviceid *d_id) -{ - struct nfs4_deviceid_node *d; - struct objio_dev_ent *de; - - d = nfs4_find_get_deviceid(nfss->pnfs_curr_ld, nfss->nfs_client, d_id); - if (!d) - return NULL; - - de = container_of(d, struct objio_dev_ent, id_node); - return de; -} - -static struct objio_dev_ent * -_dev_list_add(const struct nfs_server *nfss, - const struct nfs4_deviceid *d_id, struct osd_dev *od, - gfp_t gfp_flags) -{ - struct nfs4_deviceid_node *d; - struct objio_dev_ent *de = kzalloc(sizeof(*de), gfp_flags); - struct objio_dev_ent *n; - - if (!de) { - dprintk("%s: -ENOMEM od=%p\n", __func__, od); - return NULL; - } - - dprintk("%s: Adding od=%p\n", __func__, od); - nfs4_init_deviceid_node(&de->id_node, - nfss->pnfs_curr_ld, - nfss->nfs_client, - d_id); - de->od.od = od; - - d = nfs4_insert_deviceid_node(&de->id_node); - n = container_of(d, struct objio_dev_ent, id_node); - if (n != de) { - dprintk("%s: Race with other n->od=%p\n", __func__, n->od.od); - objio_free_deviceid_node(&de->id_node); - de = n; - } - - return de; -} - struct objio_segment { struct pnfs_layout_segment lseg; @@ -130,29 +84,24 @@ struct objio_state { /* Send and wait for a get_device_info of devices in the layout, then look them up with the osd_initiator library */ -static int objio_devices_lookup(struct pnfs_layout_hdr *pnfslay, - struct objio_segment *objio_seg, unsigned c, struct nfs4_deviceid *d_id, - gfp_t gfp_flags) +struct nfs4_deviceid_node * +objio_alloc_deviceid_node(struct nfs_server *server, struct pnfs_device *pdev, + gfp_t gfp_flags) { struct pnfs_osd_deviceaddr *deviceaddr; - struct objio_dev_ent *ode; + struct objio_dev_ent *ode = NULL; struct osd_dev *od; struct osd_dev_info odi; bool retry_flag = true; + __be32 *p; int err; - ode = _dev_list_find(NFS_SERVER(pnfslay->plh_inode), d_id); - if (ode) { - objio_seg->oc.ods[c] = &ode->od; /* must use container_of */ - return 0; - } + deviceaddr = kzalloc(sizeof(*deviceaddr), gfp_flags); + if (!deviceaddr) + return NULL; - err = objlayout_get_deviceinfo(pnfslay, d_id, &deviceaddr, gfp_flags); - if (unlikely(err)) { - dprintk("%s: objlayout_get_deviceinfo dev(%llx:%llx) =>%d\n", - __func__, _DEVID_LO(d_id), _DEVID_HI(d_id), err); - return err; - } + p = page_address(pdev->pages[0]); + pnfs_osd_xdr_decode_deviceaddr(deviceaddr, p); odi.systemid_len = deviceaddr->oda_systemid.len; if (odi.systemid_len > sizeof(odi.systemid)) { @@ -188,14 +137,24 @@ retry_lookup: goto out; } - ode = _dev_list_add(NFS_SERVER(pnfslay->plh_inode), d_id, od, - gfp_flags); - objio_seg->oc.ods[c] = &ode->od; /* must use container_of */ dprintk("Adding new dev_id(%llx:%llx)\n", - _DEVID_LO(d_id), _DEVID_HI(d_id)); + _DEVID_LO(&pdev->dev_id), _DEVID_HI(&pdev->dev_id)); + + ode = kzalloc(sizeof(*ode), gfp_flags); + if (!ode) { + dprintk("%s: -ENOMEM od=%p\n", __func__, od); + goto out; + } + + nfs4_init_deviceid_node(&ode->id_node, server, &pdev->dev_id); + kfree(deviceaddr); + + ode->od.od = od; + return &ode->id_node; + out: - objlayout_put_deviceinfo(deviceaddr); - return err; + kfree(deviceaddr); + return NULL; } static void copy_single_comp(struct ore_components *oc, unsigned c, @@ -254,6 +213,7 @@ int objio_alloc_lseg(struct pnfs_layout_segment **outp, struct xdr_stream *xdr, gfp_t gfp_flags) { + struct nfs_server *server = NFS_SERVER(pnfslay->plh_inode); struct objio_segment *objio_seg; struct pnfs_osd_xdr_decode_layout_iter iter; struct pnfs_osd_layout layout; @@ -283,13 +243,21 @@ int objio_alloc_lseg(struct pnfs_layout_segment **outp, objio_seg->oc.first_dev = layout.olo_comps_index; cur_comp = 0; while (pnfs_osd_xdr_decode_layout_comp(&src_comp, &iter, xdr, &err)) { + struct nfs4_deviceid_node *d; + struct objio_dev_ent *ode; + copy_single_comp(&objio_seg->oc, cur_comp, &src_comp); - err = objio_devices_lookup(pnfslay, objio_seg, cur_comp, - &src_comp.oc_object_id.oid_device_id, - gfp_flags); - if (err) + + d = nfs4_find_get_deviceid(server, + &src_comp.oc_object_id.oid_device_id, + pnfslay->plh_lc_cred, gfp_flags); + if (!d) { + err = -ENXIO; goto err; - ++cur_comp; + } + + ode = container_of(d, struct objio_dev_ent, id_node); + objio_seg->oc.ods[cur_comp++] = &ode->od; } /* pnfs_osd_xdr_decode_layout_comp returns false on error */ if (unlikely(err)) @@ -653,6 +621,7 @@ static struct pnfs_layoutdriver_type objlayout_type = { .flags = PNFS_LAYOUTRET_ON_SETATTR | PNFS_LAYOUTRET_ON_ERROR, + .max_deviceinfo_size = PAGE_SIZE, .owner = THIS_MODULE, .alloc_layout_hdr = objlayout_alloc_layout_hdr, .free_layout_hdr = objlayout_free_layout_hdr, diff --git a/fs/nfs/objlayout/objlayout.c b/fs/nfs/objlayout/objlayout.c index 697a16d11fac..c89357c7a914 100644 --- a/fs/nfs/objlayout/objlayout.c +++ b/fs/nfs/objlayout/objlayout.c @@ -574,76 +574,6 @@ loop_done: dprintk("%s: Return\n", __func__); } - -/* - * Get Device Info API for io engines - */ -struct objlayout_deviceinfo { - struct page *page; - struct pnfs_osd_deviceaddr da; /* This must be last */ -}; - -/* Initialize and call nfs_getdeviceinfo, then decode and return a - * "struct pnfs_osd_deviceaddr *" Eventually objlayout_put_deviceinfo() - * should be called. - */ -int objlayout_get_deviceinfo(struct pnfs_layout_hdr *pnfslay, - struct nfs4_deviceid *d_id, struct pnfs_osd_deviceaddr **deviceaddr, - gfp_t gfp_flags) -{ - struct objlayout_deviceinfo *odi; - struct pnfs_device pd; - struct page *page, **pages; - u32 *p; - int err; - - page = alloc_page(gfp_flags); - if (!page) - return -ENOMEM; - - pages = &page; - pd.pages = pages; - - memcpy(&pd.dev_id, d_id, sizeof(*d_id)); - pd.layout_type = LAYOUT_OSD2_OBJECTS; - pd.pages = &page; - pd.pgbase = 0; - pd.pglen = PAGE_SIZE; - pd.mincount = 0; - pd.maxcount = PAGE_SIZE; - - err = nfs4_proc_getdeviceinfo(NFS_SERVER(pnfslay->plh_inode), &pd, - pnfslay->plh_lc_cred); - dprintk("%s nfs_getdeviceinfo returned %d\n", __func__, err); - if (err) - goto err_out; - - p = page_address(page); - odi = kzalloc(sizeof(*odi), gfp_flags); - if (!odi) { - err = -ENOMEM; - goto err_out; - } - pnfs_osd_xdr_decode_deviceaddr(&odi->da, p); - odi->page = page; - *deviceaddr = &odi->da; - return 0; - -err_out: - __free_page(page); - return err; -} - -void objlayout_put_deviceinfo(struct pnfs_osd_deviceaddr *deviceaddr) -{ - struct objlayout_deviceinfo *odi = container_of(deviceaddr, - struct objlayout_deviceinfo, - da); - - __free_page(odi->page); - kfree(odi); -} - enum { OBJLAYOUT_MAX_URI_LEN = 256, OBJLAYOUT_MAX_OSDNAME_LEN = 64, OBJLAYOUT_MAX_SYSID_HEX_LEN = OSD_SYSTEMID_LEN * 2 + 1, diff --git a/fs/nfs/objlayout/objlayout.h b/fs/nfs/objlayout/objlayout.h index fd13f1d2f136..3a0828d57339 100644 --- a/fs/nfs/objlayout/objlayout.h +++ b/fs/nfs/objlayout/objlayout.h @@ -149,11 +149,6 @@ extern void objlayout_read_done(struct objlayout_io_res *oir, extern void objlayout_write_done(struct objlayout_io_res *oir, ssize_t status, bool sync); -extern int objlayout_get_deviceinfo(struct pnfs_layout_hdr *pnfslay, - struct nfs4_deviceid *d_id, struct pnfs_osd_deviceaddr **deviceaddr, - gfp_t gfp_flags); -extern void objlayout_put_deviceinfo(struct pnfs_osd_deviceaddr *deviceaddr); - /* * exported generic objects function vectors */ diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index be7cbce6e4c7..94e16ec88312 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -481,6 +481,14 @@ size_t nfs_generic_pg_test(struct nfs_pageio_descriptor *desc, return 0; } + /* + * Limit the request size so that we can still allocate a page array + * for it without upsetting the slab allocator. + */ + if (((desc->pg_count + req->wb_bytes) >> PAGE_SHIFT) * + sizeof(struct page) > PAGE_SIZE) + return 0; + return min(desc->pg_bsize - desc->pg_count, (size_t)req->wb_bytes); } EXPORT_SYMBOL_GPL(nfs_generic_pg_test); diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c index a3851debf8a2..76de7f568119 100644 --- a/fs/nfs/pnfs.c +++ b/fs/nfs/pnfs.c @@ -594,6 +594,9 @@ pnfs_layout_free_bulk_destroy_list(struct list_head *layout_list, dprintk("%s freeing layout for inode %lu\n", __func__, lo->plh_inode->i_ino); inode = lo->plh_inode; + + pnfs_layoutcommit_inode(inode, false); + spin_lock(&inode->i_lock); list_del_init(&lo->plh_bulk_destroy); lo->plh_block_lgets++; /* permanently block new LAYOUTGETs */ @@ -682,17 +685,6 @@ static bool pnfs_seqid_is_newer(u32 s1, u32 s2) return (s32)(s1 - s2) > 0; } -static void -pnfs_verify_layout_stateid(struct pnfs_layout_hdr *lo, - const nfs4_stateid *new, - struct list_head *free_me_list) -{ - if (nfs4_stateid_match_other(&lo->plh_stateid, new)) - return; - /* Layout is new! Kill existing layout segments */ - pnfs_mark_matching_lsegs_invalid(lo, free_me_list, NULL); -} - /* update lo->plh_stateid with new if is more recent */ void pnfs_set_layout_stateid(struct pnfs_layout_hdr *lo, const nfs4_stateid *new, @@ -749,7 +741,8 @@ pnfs_choose_layoutget_stateid(nfs4_stateid *dst, struct pnfs_layout_hdr *lo, status = -EAGAIN; } else if (!nfs4_valid_open_stateid(open_state)) { status = -EBADF; - } else if (list_empty(&lo->plh_segs)) { + } else if (list_empty(&lo->plh_segs) || + test_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags)) { int seq; do { @@ -864,6 +857,16 @@ _pnfs_return_layout(struct inode *ino) empty = list_empty(&lo->plh_segs); pnfs_clear_layoutcommit(ino, &tmp_list); pnfs_mark_matching_lsegs_invalid(lo, &tmp_list, NULL); + + if (NFS_SERVER(ino)->pnfs_curr_ld->return_range) { + struct pnfs_layout_range range = { + .iomode = IOMODE_ANY, + .offset = 0, + .length = NFS4_MAX_UINT64, + }; + NFS_SERVER(ino)->pnfs_curr_ld->return_range(lo, &range); + } + /* Don't send a LAYOUTRETURN if list was initially empty */ if (empty) { spin_unlock(&ino->i_lock); @@ -871,6 +874,8 @@ _pnfs_return_layout(struct inode *ino) dprintk("NFS: %s no layout segments to return\n", __func__); goto out; } + + set_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags); lo->plh_block_lgets++; spin_unlock(&ino->i_lock); pnfs_free_lseg_list(&tmp_list); @@ -1358,25 +1363,41 @@ pnfs_layout_process(struct nfs4_layoutget *lgp) goto out; } + init_lseg(lo, lseg); + lseg->pls_range = res->range; + spin_lock(&ino->i_lock); if (test_bit(NFS_LAYOUT_BULK_RECALL, &lo->plh_flags)) { dprintk("%s forget reply due to recall\n", __func__); goto out_forget_reply; } - if (pnfs_layoutgets_blocked(lo, 1) || - pnfs_layout_stateid_blocked(lo, &res->stateid)) { + if (pnfs_layoutgets_blocked(lo, 1)) { dprintk("%s forget reply due to state\n", __func__); goto out_forget_reply; } - /* Check that the new stateid matches the old stateid */ - pnfs_verify_layout_stateid(lo, &res->stateid, &free_me); - /* Done processing layoutget. Set the layout stateid */ - pnfs_set_layout_stateid(lo, &res->stateid, false); + if (nfs4_stateid_match_other(&lo->plh_stateid, &res->stateid)) { + /* existing state ID, make sure the sequence number matches. */ + if (pnfs_layout_stateid_blocked(lo, &res->stateid)) { + dprintk("%s forget reply due to sequence\n", __func__); + goto out_forget_reply; + } + pnfs_set_layout_stateid(lo, &res->stateid, false); + } else { + /* + * We got an entirely new state ID. Mark all segments for the + * inode invalid, and don't bother validating the stateid + * sequence number. + */ + pnfs_mark_matching_lsegs_invalid(lo, &free_me, NULL); + + nfs4_stateid_copy(&lo->plh_stateid, &res->stateid); + lo->plh_barrier = be32_to_cpu(res->stateid.seqid); + } + + clear_bit(NFS_LAYOUT_INVALID_STID, &lo->plh_flags); - init_lseg(lo, lseg); - lseg->pls_range = res->range; pnfs_get_lseg(lseg); pnfs_layout_insert_lseg(lo, lseg); @@ -1797,6 +1818,35 @@ pnfs_set_layoutcommit(struct nfs_pgio_header *hdr) } EXPORT_SYMBOL_GPL(pnfs_set_layoutcommit); +void pnfs_commit_set_layoutcommit(struct nfs_commit_data *data) +{ + struct inode *inode = data->inode; + struct nfs_inode *nfsi = NFS_I(inode); + bool mark_as_dirty = false; + + spin_lock(&inode->i_lock); + if (!test_and_set_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags)) { + mark_as_dirty = true; + dprintk("%s: Set layoutcommit for inode %lu ", + __func__, inode->i_ino); + } + if (!test_and_set_bit(NFS_LSEG_LAYOUTCOMMIT, &data->lseg->pls_flags)) { + /* references matched in nfs4_layoutcommit_release */ + pnfs_get_lseg(data->lseg); + } + if (data->lwb > nfsi->layout->plh_lwb) + nfsi->layout->plh_lwb = data->lwb; + spin_unlock(&inode->i_lock); + dprintk("%s: lseg %p end_pos %llu\n", + __func__, data->lseg, nfsi->layout->plh_lwb); + + /* if pnfs_layoutcommit_inode() runs between inode locks, the next one + * will be a noop because NFS_INO_LAYOUTCOMMIT will not be set */ + if (mark_as_dirty) + mark_inode_dirty_sync(inode); +} +EXPORT_SYMBOL_GPL(pnfs_commit_set_layoutcommit); + void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data) { struct nfs_server *nfss = NFS_SERVER(data->args.inode); @@ -1817,6 +1867,7 @@ void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data) int pnfs_layoutcommit_inode(struct inode *inode, bool sync) { + struct pnfs_layoutdriver_type *ld = NFS_SERVER(inode)->pnfs_curr_ld; struct nfs4_layoutcommit_data *data; struct nfs_inode *nfsi = NFS_I(inode); loff_t end_pos; @@ -1867,6 +1918,20 @@ pnfs_layoutcommit_inode(struct inode *inode, bool sync) data->args.lastbytewritten = end_pos - 1; data->res.server = NFS_SERVER(inode); + if (ld->prepare_layoutcommit) { + status = ld->prepare_layoutcommit(&data->args); + if (status) { + spin_lock(&inode->i_lock); + if (end_pos < nfsi->layout->plh_lwb) + nfsi->layout->plh_lwb = end_pos; + spin_unlock(&inode->i_lock); + put_rpccred(data->cred); + set_bit(NFS_INO_LAYOUTCOMMIT, &nfsi->flags); + goto clear_layoutcommitting; + } + } + + status = nfs4_proc_layoutcommit(data, sync); out: if (status) diff --git a/fs/nfs/pnfs.h b/fs/nfs/pnfs.h index aca3dff5dae6..693ce42ec683 100644 --- a/fs/nfs/pnfs.h +++ b/fs/nfs/pnfs.h @@ -65,12 +65,15 @@ enum { NFS_LAYOUT_BULK_RECALL, /* bulk recall affecting layout */ NFS_LAYOUT_ROC, /* some lseg had roc bit set */ NFS_LAYOUT_RETURN, /* Return this layout ASAP */ + NFS_LAYOUT_INVALID_STID, /* layout stateid id is invalid */ }; enum layoutdriver_policy_flags { - /* Should the pNFS client commit and return the layout upon a setattr */ + /* Should the pNFS client commit and return the layout upon truncate to + * a smaller size */ PNFS_LAYOUTRET_ON_SETATTR = 1 << 0, PNFS_LAYOUTRET_ON_ERROR = 1 << 1, + PNFS_READ_WHOLE_PAGE = 1 << 2, }; struct nfs4_deviceid_node; @@ -82,6 +85,7 @@ struct pnfs_layoutdriver_type { const char *name; struct module *owner; unsigned flags; + unsigned max_deviceinfo_size; int (*set_layoutdriver) (struct nfs_server *, const struct nfs_fh *); int (*clear_layoutdriver) (struct nfs_server *); @@ -92,6 +96,9 @@ struct pnfs_layoutdriver_type { struct pnfs_layout_segment * (*alloc_lseg) (struct pnfs_layout_hdr *layoutid, struct nfs4_layoutget_res *lgr, gfp_t gfp_flags); void (*free_lseg) (struct pnfs_layout_segment *lseg); + void (*return_range) (struct pnfs_layout_hdr *lo, + struct pnfs_layout_range *range); + /* test for nfs page cache coalescing */ const struct nfs_pageio_ops *pg_read_ops; const struct nfs_pageio_ops *pg_write_ops; @@ -121,14 +128,17 @@ struct pnfs_layoutdriver_type { enum pnfs_try_status (*write_pagelist)(struct nfs_pgio_header *, int); void (*free_deviceid_node) (struct nfs4_deviceid_node *); + struct nfs4_deviceid_node * (*alloc_deviceid_node) + (struct nfs_server *server, struct pnfs_device *pdev, + gfp_t gfp_flags); void (*encode_layoutreturn) (struct pnfs_layout_hdr *layoutid, struct xdr_stream *xdr, const struct nfs4_layoutreturn_args *args); void (*cleanup_layoutcommit) (struct nfs4_layoutcommit_data *data); - - void (*encode_layoutcommit) (struct pnfs_layout_hdr *layoutid, + int (*prepare_layoutcommit) (struct nfs4_layoutcommit_args *args); + void (*encode_layoutcommit) (struct pnfs_layout_hdr *lo, struct xdr_stream *xdr, const struct nfs4_layoutcommit_args *args); }; @@ -171,9 +181,6 @@ extern int pnfs_register_layoutdriver(struct pnfs_layoutdriver_type *); extern void pnfs_unregister_layoutdriver(struct pnfs_layoutdriver_type *); /* nfs4proc.c */ -extern int nfs4_proc_getdevicelist(struct nfs_server *server, - const struct nfs_fh *fh, - struct pnfs_devicelist *devlist); extern int nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *dev, struct rpc_cred *cred); @@ -219,6 +226,7 @@ void pnfs_roc_release(struct inode *ino); void pnfs_roc_set_barrier(struct inode *ino, u32 barrier); bool pnfs_roc_drain(struct inode *ino, u32 *barrier, struct rpc_task *task); void pnfs_set_layoutcommit(struct nfs_pgio_header *); +void pnfs_commit_set_layoutcommit(struct nfs_commit_data *data); void pnfs_cleanup_layoutcommit(struct nfs4_layoutcommit_data *data); int pnfs_layoutcommit_inode(struct inode *inode, bool sync); int _pnfs_return_layout(struct inode *); @@ -255,11 +263,12 @@ struct nfs4_deviceid_node { atomic_t ref; }; -struct nfs4_deviceid_node *nfs4_find_get_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *); +struct nfs4_deviceid_node * +nfs4_find_get_deviceid(struct nfs_server *server, + const struct nfs4_deviceid *id, struct rpc_cred *cred, + gfp_t gfp_mask); void nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *, const struct nfs_client *, const struct nfs4_deviceid *); -void nfs4_init_deviceid_node(struct nfs4_deviceid_node *, - const struct pnfs_layoutdriver_type *, - const struct nfs_client *, +void nfs4_init_deviceid_node(struct nfs4_deviceid_node *, struct nfs_server *, const struct nfs4_deviceid *); struct nfs4_deviceid_node *nfs4_insert_deviceid_node(struct nfs4_deviceid_node *); bool nfs4_put_deviceid_node(struct nfs4_deviceid_node *); @@ -267,6 +276,13 @@ void nfs4_mark_deviceid_unavailable(struct nfs4_deviceid_node *node); bool nfs4_test_deviceid_unavailable(struct nfs4_deviceid_node *node); void nfs4_deviceid_purge_client(const struct nfs_client *); +static inline struct nfs4_deviceid_node * +nfs4_get_deviceid(struct nfs4_deviceid_node *d) +{ + atomic_inc(&d->ref); + return d; +} + static inline struct pnfs_layout_segment * pnfs_get_lseg(struct pnfs_layout_segment *lseg) { @@ -368,6 +384,14 @@ pnfs_ld_layoutret_on_setattr(struct inode *inode) } static inline bool +pnfs_ld_read_whole_page(struct inode *inode) +{ + if (!pnfs_enabled_sb(NFS_SERVER(inode))) + return false; + return NFS_SERVER(inode)->pnfs_curr_ld->flags & PNFS_READ_WHOLE_PAGE; +} + +static inline bool pnfs_layoutcommit_outstanding(struct inode *inode) { struct nfs_inode *nfsi = NFS_I(inode); @@ -443,6 +467,12 @@ pnfs_ld_layoutret_on_setattr(struct inode *inode) } static inline bool +pnfs_ld_read_whole_page(struct inode *inode) +{ + return false; +} + +static inline bool pnfs_roc(struct inode *ino) { return false; diff --git a/fs/nfs/pnfs_dev.c b/fs/nfs/pnfs_dev.c index 6da209bd9408..aa2ec0015183 100644 --- a/fs/nfs/pnfs_dev.c +++ b/fs/nfs/pnfs_dev.c @@ -29,6 +29,9 @@ */ #include <linux/export.h> +#include <linux/nfs_fs.h> +#include "nfs4session.h" +#include "internal.h" #include "pnfs.h" #define NFSDBG_FACILITY NFSDBG_PNFS @@ -89,6 +92,74 @@ _lookup_deviceid(const struct pnfs_layoutdriver_type *ld, return NULL; } +static struct nfs4_deviceid_node * +nfs4_get_device_info(struct nfs_server *server, + const struct nfs4_deviceid *dev_id, + struct rpc_cred *cred, gfp_t gfp_flags) +{ + struct nfs4_deviceid_node *d = NULL; + struct pnfs_device *pdev = NULL; + struct page **pages = NULL; + u32 max_resp_sz; + int max_pages; + int rc, i; + + /* + * Use the session max response size as the basis for setting + * GETDEVICEINFO's maxcount + */ + max_resp_sz = server->nfs_client->cl_session->fc_attrs.max_resp_sz; + if (server->pnfs_curr_ld->max_deviceinfo_size && + server->pnfs_curr_ld->max_deviceinfo_size < max_resp_sz) + max_resp_sz = server->pnfs_curr_ld->max_deviceinfo_size; + max_pages = nfs_page_array_len(0, max_resp_sz); + dprintk("%s: server %p max_resp_sz %u max_pages %d\n", + __func__, server, max_resp_sz, max_pages); + + pdev = kzalloc(sizeof(*pdev), gfp_flags); + if (!pdev) + return NULL; + + pages = kcalloc(max_pages, sizeof(struct page *), gfp_flags); + if (!pages) + goto out_free_pdev; + + for (i = 0; i < max_pages; i++) { + pages[i] = alloc_page(gfp_flags); + if (!pages[i]) + goto out_free_pages; + } + + memcpy(&pdev->dev_id, dev_id, sizeof(*dev_id)); + pdev->layout_type = server->pnfs_curr_ld->id; + pdev->pages = pages; + pdev->pgbase = 0; + pdev->pglen = max_resp_sz; + pdev->mincount = 0; + pdev->maxcount = max_resp_sz - nfs41_maxgetdevinfo_overhead; + + rc = nfs4_proc_getdeviceinfo(server, pdev, cred); + dprintk("%s getdevice info returns %d\n", __func__, rc); + if (rc) + goto out_free_pages; + + /* + * Found new device, need to decode it and then add it to the + * list of known devices for this mountpoint. + */ + d = server->pnfs_curr_ld->alloc_deviceid_node(server, pdev, + gfp_flags); + +out_free_pages: + for (i = 0; i < max_pages; i++) + __free_page(pages[i]); + kfree(pages); +out_free_pdev: + kfree(pdev); + dprintk("<-- %s d %p\n", __func__, d); + return d; +} + /* * Lookup a deviceid in cache and get a reference count on it if found * @@ -96,14 +167,14 @@ _lookup_deviceid(const struct pnfs_layoutdriver_type *ld, * @id deviceid to look up */ static struct nfs4_deviceid_node * -_find_get_deviceid(const struct pnfs_layoutdriver_type *ld, - const struct nfs_client *clp, const struct nfs4_deviceid *id, - long hash) +__nfs4_find_get_deviceid(struct nfs_server *server, + const struct nfs4_deviceid *id, long hash) { struct nfs4_deviceid_node *d; rcu_read_lock(); - d = _lookup_deviceid(ld, clp, id, hash); + d = _lookup_deviceid(server->pnfs_curr_ld, server->nfs_client, id, + hash); if (d != NULL) atomic_inc(&d->ref); rcu_read_unlock(); @@ -111,10 +182,33 @@ _find_get_deviceid(const struct pnfs_layoutdriver_type *ld, } struct nfs4_deviceid_node * -nfs4_find_get_deviceid(const struct pnfs_layoutdriver_type *ld, - const struct nfs_client *clp, const struct nfs4_deviceid *id) +nfs4_find_get_deviceid(struct nfs_server *server, + const struct nfs4_deviceid *id, struct rpc_cred *cred, + gfp_t gfp_mask) { - return _find_get_deviceid(ld, clp, id, nfs4_deviceid_hash(id)); + long hash = nfs4_deviceid_hash(id); + struct nfs4_deviceid_node *d, *new; + + d = __nfs4_find_get_deviceid(server, id, hash); + if (d) + return d; + + new = nfs4_get_device_info(server, id, cred, gfp_mask); + if (!new) + return new; + + spin_lock(&nfs4_deviceid_lock); + d = __nfs4_find_get_deviceid(server, id, hash); + if (d) { + spin_unlock(&nfs4_deviceid_lock); + server->pnfs_curr_ld->free_deviceid_node(new); + return d; + } + hlist_add_head_rcu(&new->node, &nfs4_deviceid_cache[hash]); + atomic_inc(&new->ref); + spin_unlock(&nfs4_deviceid_lock); + + return new; } EXPORT_SYMBOL_GPL(nfs4_find_get_deviceid); @@ -151,15 +245,13 @@ nfs4_delete_deviceid(const struct pnfs_layoutdriver_type *ld, EXPORT_SYMBOL_GPL(nfs4_delete_deviceid); void -nfs4_init_deviceid_node(struct nfs4_deviceid_node *d, - const struct pnfs_layoutdriver_type *ld, - const struct nfs_client *nfs_client, +nfs4_init_deviceid_node(struct nfs4_deviceid_node *d, struct nfs_server *server, const struct nfs4_deviceid *id) { INIT_HLIST_NODE(&d->node); INIT_HLIST_NODE(&d->tmpnode); - d->ld = ld; - d->nfs_client = nfs_client; + d->ld = server->pnfs_curr_ld; + d->nfs_client = server->nfs_client; d->flags = 0; d->deviceid = *id; atomic_set(&d->ref, 1); @@ -167,39 +259,6 @@ nfs4_init_deviceid_node(struct nfs4_deviceid_node *d, EXPORT_SYMBOL_GPL(nfs4_init_deviceid_node); /* - * Uniquely initialize and insert a deviceid node into cache - * - * @new new deviceid node - * Note that the caller must set up the following members: - * new->ld - * new->nfs_client - * new->deviceid - * - * @ret the inserted node, if none found, otherwise, the found entry. - */ -struct nfs4_deviceid_node * -nfs4_insert_deviceid_node(struct nfs4_deviceid_node *new) -{ - struct nfs4_deviceid_node *d; - long hash; - - spin_lock(&nfs4_deviceid_lock); - hash = nfs4_deviceid_hash(&new->deviceid); - d = _find_get_deviceid(new->ld, new->nfs_client, &new->deviceid, hash); - if (d) { - spin_unlock(&nfs4_deviceid_lock); - return d; - } - - hlist_add_head_rcu(&new->node, &nfs4_deviceid_cache[hash]); - spin_unlock(&nfs4_deviceid_lock); - atomic_inc(&new->ref); - - return new; -} -EXPORT_SYMBOL_GPL(nfs4_insert_deviceid_node); - -/* * Dereference a deviceid node and delete it when its reference count drops * to zero. * @@ -299,4 +358,3 @@ nfs4_deviceid_mark_client_invalid(struct nfs_client *clp) } rcu_read_unlock(); } - diff --git a/fs/nfs/super.c b/fs/nfs/super.c index e4499d5b51e8..31a11b0e885d 100644 --- a/fs/nfs/super.c +++ b/fs/nfs/super.c @@ -2065,11 +2065,6 @@ static int nfs23_validate_mount_data(void *options, return NFS_TEXT_DATA; } -#if !IS_ENABLED(CONFIG_NFS_V3) - if (args->version == 3) - goto out_v3_not_compiled; -#endif /* !CONFIG_NFS_V3 */ - return 0; out_no_data: @@ -2085,12 +2080,6 @@ out_no_sec: dfprintk(MOUNT, "NFS: nfs_mount_data version supports only AUTH_SYS\n"); return -EINVAL; -#if !IS_ENABLED(CONFIG_NFS_V3) -out_v3_not_compiled: - dfprintk(MOUNT, "NFS: NFSv3 is not compiled into kernel\n"); - return -EPROTONOSUPPORT; -#endif /* !CONFIG_NFS_V3 */ - out_nomem: dfprintk(MOUNT, "NFS: not enough memory to handle mount options\n"); return -ENOMEM; diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 175d5d073ccf..12493846a2d3 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -49,6 +49,9 @@ static const struct nfs_rw_ops nfs_rw_write_ops; static void nfs_clear_request_commit(struct nfs_page *req); static void nfs_init_cinfo_from_inode(struct nfs_commit_info *cinfo, struct inode *inode); +static struct nfs_page * +nfs_page_search_commits_for_head_request_locked(struct nfs_inode *nfsi, + struct page *page); static struct kmem_cache *nfs_wdata_cachep; static mempool_t *nfs_wdata_mempool; @@ -95,38 +98,6 @@ static void nfs_context_set_write_error(struct nfs_open_context *ctx, int error) } /* - * nfs_page_search_commits_for_head_request_locked - * - * Search through commit lists on @inode for the head request for @page. - * Must be called while holding the inode (which is cinfo) lock. - * - * Returns the head request if found, or NULL if not found. - */ -static struct nfs_page * -nfs_page_search_commits_for_head_request_locked(struct nfs_inode *nfsi, - struct page *page) -{ - struct nfs_page *freq, *t; - struct nfs_commit_info cinfo; - struct inode *inode = &nfsi->vfs_inode; - - nfs_init_cinfo_from_inode(&cinfo, inode); - - /* search through pnfs commit lists */ - freq = pnfs_search_commit_reqs(inode, &cinfo, page); - if (freq) - return freq->wb_head; - - /* Linearly search the commit list for the correct request */ - list_for_each_entry_safe(freq, t, &cinfo.mds->list, wb_list) { - if (freq->wb_page == page) - return freq->wb_head; - } - - return NULL; -} - -/* * nfs_page_find_head_request_locked - find head request associated with @page * * must be called while holding the inode lock. @@ -271,11 +242,14 @@ static void nfs_mark_uptodate(struct nfs_page *req) static int wb_priority(struct writeback_control *wbc) { + int ret = 0; if (wbc->for_reclaim) return FLUSH_HIGHPRI | FLUSH_STABLE; + if (wbc->sync_mode == WB_SYNC_ALL) + ret = FLUSH_COND_STABLE; if (wbc->for_kupdate || wbc->for_background) - return FLUSH_LOWPRI | FLUSH_COND_STABLE; - return FLUSH_COND_STABLE; + ret |= FLUSH_LOWPRI; + return ret; } /* @@ -731,6 +705,8 @@ static void nfs_inode_remove_request(struct nfs_page *req) if (likely(!PageSwapCache(head->wb_page))) { set_page_private(head->wb_page, 0); ClearPagePrivate(head->wb_page); + smp_mb__after_atomic(); + wake_up_page(head->wb_page, PG_private); clear_bit(PG_MAPPED, &head->wb_flags); } nfsi->npages--; @@ -749,7 +725,38 @@ nfs_mark_request_dirty(struct nfs_page *req) __set_page_dirty_nobuffers(req->wb_page); } -#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4) +/* + * nfs_page_search_commits_for_head_request_locked + * + * Search through commit lists on @inode for the head request for @page. + * Must be called while holding the inode (which is cinfo) lock. + * + * Returns the head request if found, or NULL if not found. + */ +static struct nfs_page * +nfs_page_search_commits_for_head_request_locked(struct nfs_inode *nfsi, + struct page *page) +{ + struct nfs_page *freq, *t; + struct nfs_commit_info cinfo; + struct inode *inode = &nfsi->vfs_inode; + + nfs_init_cinfo_from_inode(&cinfo, inode); + + /* search through pnfs commit lists */ + freq = pnfs_search_commit_reqs(inode, &cinfo, page); + if (freq) + return freq->wb_head; + + /* Linearly search the commit list for the correct request */ + list_for_each_entry_safe(freq, t, &cinfo.mds->list, wb_list) { + if (freq->wb_page == page) + return freq->wb_head; + } + + return NULL; +} + /** * nfs_request_add_commit_list - add request to a commit list * @req: pointer to a struct nfs_page @@ -867,36 +874,6 @@ int nfs_write_need_commit(struct nfs_pgio_header *hdr) return hdr->verf.committed != NFS_FILE_SYNC; } -#else -static void nfs_init_cinfo_from_inode(struct nfs_commit_info *cinfo, - struct inode *inode) -{ -} - -void nfs_init_cinfo(struct nfs_commit_info *cinfo, - struct inode *inode, - struct nfs_direct_req *dreq) -{ -} - -void -nfs_mark_request_commit(struct nfs_page *req, struct pnfs_layout_segment *lseg, - struct nfs_commit_info *cinfo) -{ -} - -static void -nfs_clear_request_commit(struct nfs_page *req) -{ -} - -int nfs_write_need_commit(struct nfs_pgio_header *hdr) -{ - return 0; -} - -#endif - static void nfs_write_completion(struct nfs_pgio_header *hdr) { struct nfs_commit_info cinfo; @@ -932,7 +909,6 @@ out: hdr->release(hdr); } -#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4) unsigned long nfs_reqs_to_commit(struct nfs_commit_info *cinfo) { @@ -989,19 +965,6 @@ nfs_scan_commit(struct inode *inode, struct list_head *dst, return ret; } -#else -unsigned long nfs_reqs_to_commit(struct nfs_commit_info *cinfo) -{ - return 0; -} - -int nfs_scan_commit(struct inode *inode, struct list_head *dst, - struct nfs_commit_info *cinfo) -{ - return 0; -} -#endif - /* * Search for an existing write request, and attempt to update * it to reflect a new dirty region on a given page. @@ -1394,7 +1357,6 @@ static int nfs_writeback_done(struct rpc_task *task, return status; nfs_add_stats(inode, NFSIOS_SERVERWRITTENBYTES, hdr->res.count); -#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4) if (hdr->res.verf->committed < hdr->args.stable && task->tk_status >= 0) { /* We tried a write call, but the server did not @@ -1416,7 +1378,6 @@ static int nfs_writeback_done(struct rpc_task *task, complain = jiffies + 300 * HZ; } } -#endif /* Deal with the suid/sgid bit corner case */ if (nfs_should_remove_suid(inode)) @@ -1469,7 +1430,6 @@ static void nfs_writeback_result(struct rpc_task *task, } -#if IS_ENABLED(CONFIG_NFS_V3) || IS_ENABLED(CONFIG_NFS_V4) static int nfs_commit_set_lock(struct nfs_inode *nfsi, int may_wait) { int ret; @@ -1538,6 +1498,18 @@ int nfs_initiate_commit(struct rpc_clnt *clnt, struct nfs_commit_data *data, } EXPORT_SYMBOL_GPL(nfs_initiate_commit); +static loff_t nfs_get_lwb(struct list_head *head) +{ + loff_t lwb = 0; + struct nfs_page *req; + + list_for_each_entry(req, head, wb_list) + if (lwb < (req_offset(req) + req->wb_bytes)) + lwb = req_offset(req) + req->wb_bytes; + + return lwb; +} + /* * Set up the argument/result storage required for the RPC call. */ @@ -1557,6 +1529,9 @@ void nfs_init_commit(struct nfs_commit_data *data, data->inode = inode; data->cred = first->wb_context->cred; data->lseg = lseg; /* reference transferred */ + /* only set lwb for pnfs commit */ + if (lseg) + data->lwb = nfs_get_lwb(&data->pages); data->mds_ops = &nfs_commit_ops; data->completion_ops = cinfo->completion_ops; data->dreq = cinfo->dreq; @@ -1636,6 +1611,7 @@ static void nfs_commit_release_pages(struct nfs_commit_data *data) struct nfs_page *req; int status = data->task.tk_status; struct nfs_commit_info cinfo; + struct nfs_server *nfss; while (!list_empty(&data->pages)) { req = nfs_list_entry(data->pages.next); @@ -1669,6 +1645,10 @@ static void nfs_commit_release_pages(struct nfs_commit_data *data) next: nfs_unlock_and_release_request(req); } + nfss = NFS_SERVER(data->inode); + if (atomic_long_read(&nfss->writeback) < NFS_CONGESTION_OFF_THRESH) + clear_bdi_congested(&nfss->backing_dev_info, BLK_RW_ASYNC); + nfs_init_cinfo(&cinfo, data->inode, data->dreq); if (atomic_dec_and_test(&cinfo.mds->rpcs_out)) nfs_commit_clear_lock(NFS_I(data->inode)); @@ -1778,12 +1758,6 @@ out_mark_dirty: __mark_inode_dirty(inode, I_DIRTY_DATASYNC); return ret; } -#else -static int nfs_commit_unstable_pages(struct inode *inode, struct writeback_control *wbc) -{ - return 0; -} -#endif int nfs_write_inode(struct inode *inode, struct writeback_control *wbc) { diff --git a/fs/nfs_common/Makefile b/fs/nfs_common/Makefile index f689ed82af3a..d153ca3ea577 100644 --- a/fs/nfs_common/Makefile +++ b/fs/nfs_common/Makefile @@ -3,5 +3,6 @@ # obj-$(CONFIG_NFS_ACL_SUPPORT) += nfs_acl.o - nfs_acl-objs := nfsacl.o + +obj-$(CONFIG_GRACE_PERIOD) += grace.o diff --git a/fs/lockd/grace.c b/fs/nfs_common/grace.c index 6d1ee7204c88..ae6e58ea4de5 100644 --- a/fs/lockd/grace.c +++ b/fs/nfs_common/grace.c @@ -1,17 +1,20 @@ /* * Common code for control of lockd and nfsv4 grace periods. + * + * Transplanted from lockd code */ #include <linux/module.h> -#include <linux/lockd/bind.h> #include <net/net_namespace.h> +#include <net/netns/generic.h> +#include <linux/fs.h> -#include "netns.h" - +static int grace_net_id; static DEFINE_SPINLOCK(grace_lock); /** * locks_start_grace + * @net: net namespace that this lock manager belongs to * @lm: who this grace period is for * * A grace period is a period during which locks should not be given @@ -21,18 +24,20 @@ static DEFINE_SPINLOCK(grace_lock); * * This function is called to start a grace period. */ -void locks_start_grace(struct net *net, struct lock_manager *lm) +void +locks_start_grace(struct net *net, struct lock_manager *lm) { - struct lockd_net *ln = net_generic(net, lockd_net_id); + struct list_head *grace_list = net_generic(net, grace_net_id); spin_lock(&grace_lock); - list_add(&lm->list, &ln->grace_list); + list_add(&lm->list, grace_list); spin_unlock(&grace_lock); } EXPORT_SYMBOL_GPL(locks_start_grace); /** * locks_end_grace + * @net: net namespace that this lock manager belongs to * @lm: who this grace period is for * * Call this function to state that the given lock manager is ready to @@ -41,7 +46,8 @@ EXPORT_SYMBOL_GPL(locks_start_grace); * Note that callers count on it being safe to call this more than once, * and the second call should be a no-op. */ -void locks_end_grace(struct lock_manager *lm) +void +locks_end_grace(struct lock_manager *lm) { spin_lock(&grace_lock); list_del_init(&lm->list); @@ -56,10 +62,52 @@ EXPORT_SYMBOL_GPL(locks_end_grace); * to answer ordinary lock requests, and when they should accept only * lock reclaims. */ -int locks_in_grace(struct net *net) +int +locks_in_grace(struct net *net) { - struct lockd_net *ln = net_generic(net, lockd_net_id); + struct list_head *grace_list = net_generic(net, grace_net_id); - return !list_empty(&ln->grace_list); + return !list_empty(grace_list); } EXPORT_SYMBOL_GPL(locks_in_grace); + +static int __net_init +grace_init_net(struct net *net) +{ + struct list_head *grace_list = net_generic(net, grace_net_id); + + INIT_LIST_HEAD(grace_list); + return 0; +} + +static void __net_exit +grace_exit_net(struct net *net) +{ + struct list_head *grace_list = net_generic(net, grace_net_id); + + BUG_ON(!list_empty(grace_list)); +} + +static struct pernet_operations grace_net_ops = { + .init = grace_init_net, + .exit = grace_exit_net, + .id = &grace_net_id, + .size = sizeof(struct list_head), +}; + +static int __init +init_grace(void) +{ + return register_pernet_subsys(&grace_net_ops); +} + +static void __exit +exit_grace(void) +{ + unregister_pernet_subsys(&grace_net_ops); +} + +MODULE_AUTHOR("Jeff Layton <jlayton@primarydata.com>"); +MODULE_LICENSE("GPL"); +module_init(init_grace) +module_exit(exit_grace) diff --git a/fs/nfsd/Kconfig b/fs/nfsd/Kconfig index f994e750e0d1..73395156bdb4 100644 --- a/fs/nfsd/Kconfig +++ b/fs/nfsd/Kconfig @@ -71,6 +71,7 @@ config NFSD_V4 select FS_POSIX_ACL select SUNRPC_GSS select CRYPTO + select GRACE_PERIOD help This option enables support in your system's NFS server for version 4 of the NFS protocol (RFC 3530). @@ -94,9 +95,6 @@ config NFSD_V4_SECURITY_LABEL If you do not wish to enable fine-grained security labels SELinux or Smack policies on NFSv4 files, say N. - WARNING: there is still a chance of backwards-incompatible protocol changes. - For now we recommend "Y" only for developers and testers. - config NFSD_FAULT_INJECTION bool "NFS server manual fault injection" depends on NFSD_V4 && DEBUG_KERNEL diff --git a/fs/nfsd/cache.h b/fs/nfsd/cache.h index b582f9ab6b2a..dd96a3830004 100644 --- a/fs/nfsd/cache.h +++ b/fs/nfsd/cache.h @@ -18,7 +18,6 @@ * is much larger than a sockaddr_in6. */ struct svc_cacherep { - struct hlist_node c_hash; struct list_head c_lru; unsigned char c_state, /* unused, inprog, done */ diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c index 72ffd7cce3c3..30a739d896ff 100644 --- a/fs/nfsd/export.c +++ b/fs/nfsd/export.c @@ -1145,6 +1145,7 @@ static struct flags { { NFSEXP_ALLSQUASH, {"all_squash", ""}}, { NFSEXP_ASYNC, {"async", "sync"}}, { NFSEXP_GATHERED_WRITES, {"wdelay", "no_wdelay"}}, + { NFSEXP_NOREADDIRPLUS, {"nordirplus", ""}}, { NFSEXP_NOHIDE, {"nohide", ""}}, { NFSEXP_CROSSMOUNT, {"crossmnt", ""}}, { NFSEXP_NOSUBTREECHECK, {"no_subtree_check", ""}}, diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c index fa2525b2e9d7..12f2aab4f614 100644 --- a/fs/nfsd/nfs3proc.c +++ b/fs/nfsd/nfs3proc.c @@ -223,11 +223,6 @@ nfsd3_proc_create(struct svc_rqst *rqstp, struct nfsd3_createargs *argp, newfhp = fh_init(&resp->fh, NFS3_FHSIZE); attr = &argp->attrs; - /* Get the directory inode */ - nfserr = fh_verify(rqstp, dirfhp, S_IFDIR, NFSD_MAY_CREATE); - if (nfserr) - RETURN_STATUS(nfserr); - /* Unfudge the mode bits */ attr->ia_mode &= ~S_IFMT; if (!(attr->ia_valid & ATTR_MODE)) { @@ -471,6 +466,14 @@ nfsd3_proc_readdirplus(struct svc_rqst *rqstp, struct nfsd3_readdirargs *argp, resp->buflen = resp->count; resp->rqstp = rqstp; offset = argp->cookie; + + nfserr = fh_verify(rqstp, &resp->fh, S_IFDIR, NFSD_MAY_NOP); + if (nfserr) + RETURN_STATUS(nfserr); + + if (resp->fh.fh_export->ex_flags & NFSEXP_NOREADDIRPLUS) + RETURN_STATUS(nfserr_notsupp); + nfserr = nfsd_readdir(rqstp, &resp->fh, &offset, &resp->common, diff --git a/fs/nfsd/nfs4callback.c b/fs/nfsd/nfs4callback.c index e0be57b0f79b..ed2b1151b171 100644 --- a/fs/nfsd/nfs4callback.c +++ b/fs/nfsd/nfs4callback.c @@ -49,12 +49,6 @@ static void nfsd4_mark_cb_fault(struct nfs4_client *, int reason); /* Index of predefined Linux callback client operations */ -enum { - NFSPROC4_CLNT_CB_NULL = 0, - NFSPROC4_CLNT_CB_RECALL, - NFSPROC4_CLNT_CB_SEQUENCE, -}; - struct nfs4_cb_compound_hdr { /* args */ u32 ident; /* minorversion 0 only */ @@ -494,7 +488,7 @@ static void nfs4_xdr_enc_cb_null(struct rpc_rqst *req, struct xdr_stream *xdr, static void nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, struct xdr_stream *xdr, const struct nfsd4_callback *cb) { - const struct nfs4_delegation *args = cb->cb_op; + const struct nfs4_delegation *dp = cb_to_delegation(cb); struct nfs4_cb_compound_hdr hdr = { .ident = cb->cb_clp->cl_cb_ident, .minorversion = cb->cb_minorversion, @@ -502,7 +496,7 @@ static void nfs4_xdr_enc_cb_recall(struct rpc_rqst *req, struct xdr_stream *xdr, encode_cb_compound4args(xdr, &hdr); encode_cb_sequence4args(xdr, cb, &hdr); - encode_cb_recall4args(xdr, args, &hdr); + encode_cb_recall4args(xdr, dp, &hdr); encode_cb_nops(&hdr); } @@ -746,27 +740,6 @@ static const struct rpc_call_ops nfsd4_cb_probe_ops = { static struct workqueue_struct *callback_wq; -static void run_nfsd4_cb(struct nfsd4_callback *cb) -{ - queue_work(callback_wq, &cb->cb_work); -} - -static void do_probe_callback(struct nfs4_client *clp) -{ - struct nfsd4_callback *cb = &clp->cl_cb_null; - - cb->cb_op = NULL; - cb->cb_clp = clp; - - cb->cb_msg.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_NULL]; - cb->cb_msg.rpc_argp = NULL; - cb->cb_msg.rpc_resp = NULL; - - cb->cb_ops = &nfsd4_cb_probe_ops; - - run_nfsd4_cb(cb); -} - /* * Poke the callback thread to process any updates to the callback * parameters, and send a null probe. @@ -775,7 +748,7 @@ void nfsd4_probe_callback(struct nfs4_client *clp) { clp->cl_cb_state = NFSD4_CB_UNKNOWN; set_bit(NFSD4_CLIENT_CB_UPDATE, &clp->cl_flags); - do_probe_callback(clp); + nfsd4_run_cb(&clp->cl_cb_null); } void nfsd4_probe_callback_sync(struct nfs4_client *clp) @@ -847,23 +820,9 @@ static void nfsd4_cb_done(struct rpc_task *task, void *calldata) rpc_wake_up_next(&clp->cl_cb_waitq); dprintk("%s: freed slot, new seqid=%d\n", __func__, clp->cl_cb_session->se_cb_seq_nr); - - /* We're done looking into the sequence information */ - task->tk_msg.rpc_resp = NULL; } -} - - -static void nfsd4_cb_recall_done(struct rpc_task *task, void *calldata) -{ - struct nfsd4_callback *cb = calldata; - struct nfs4_delegation *dp = container_of(cb, struct nfs4_delegation, dl_recall); - struct nfs4_client *clp = cb->cb_clp; - struct rpc_clnt *current_rpc_client = clp->cl_cb_client; - - nfsd4_cb_done(task, calldata); - if (current_rpc_client != task->tk_client) { + if (clp->cl_cb_client != task->tk_client) { /* We're shutting down or changing cl_cb_client; leave * it to nfsd4_process_cb_update to restart the call if * necessary. */ @@ -872,47 +831,42 @@ static void nfsd4_cb_recall_done(struct rpc_task *task, void *calldata) if (cb->cb_done) return; - switch (task->tk_status) { + + switch (cb->cb_ops->done(cb, task)) { case 0: - cb->cb_done = true; + task->tk_status = 0; + rpc_restart_call_prepare(task); return; - case -EBADHANDLE: - case -NFS4ERR_BAD_STATEID: - /* Race: client probably got cb_recall - * before open reply granting delegation */ + case 1: break; - default: + case -1: /* Network partition? */ nfsd4_mark_cb_down(clp, task->tk_status); + break; + default: + BUG(); } - if (dp->dl_retries--) { - rpc_delay(task, 2*HZ); - task->tk_status = 0; - rpc_restart_call_prepare(task); - return; - } - nfsd4_mark_cb_down(clp, task->tk_status); cb->cb_done = true; } -static void nfsd4_cb_recall_release(void *calldata) +static void nfsd4_cb_release(void *calldata) { struct nfsd4_callback *cb = calldata; struct nfs4_client *clp = cb->cb_clp; - struct nfs4_delegation *dp = container_of(cb, struct nfs4_delegation, dl_recall); if (cb->cb_done) { spin_lock(&clp->cl_lock); list_del(&cb->cb_per_client); spin_unlock(&clp->cl_lock); - nfs4_put_stid(&dp->dl_stid); + + cb->cb_ops->release(cb); } } -static const struct rpc_call_ops nfsd4_cb_recall_ops = { +static const struct rpc_call_ops nfsd4_cb_ops = { .rpc_call_prepare = nfsd4_cb_prepare, - .rpc_call_done = nfsd4_cb_recall_done, - .rpc_release = nfsd4_cb_recall_release, + .rpc_call_done = nfsd4_cb_done, + .rpc_release = nfsd4_cb_release, }; int nfsd4_create_callback_queue(void) @@ -937,16 +891,10 @@ void nfsd4_shutdown_callback(struct nfs4_client *clp) * instead, nfsd4_run_cb_null() will detect the killed * client, destroy the rpc client, and stop: */ - do_probe_callback(clp); + nfsd4_run_cb(&clp->cl_cb_null); flush_workqueue(callback_wq); } -static void nfsd4_release_cb(struct nfsd4_callback *cb) -{ - if (cb->cb_ops->rpc_release) - cb->cb_ops->rpc_release(cb); -} - /* requires cl_lock: */ static struct nfsd4_conn * __nfsd4_find_backchannel(struct nfs4_client *clp) { @@ -1009,63 +957,49 @@ static void nfsd4_process_cb_update(struct nfsd4_callback *cb) } /* Yay, the callback channel's back! Restart any callbacks: */ list_for_each_entry(cb, &clp->cl_callbacks, cb_per_client) - run_nfsd4_cb(cb); + queue_work(callback_wq, &cb->cb_work); } static void -nfsd4_run_callback_rpc(struct nfsd4_callback *cb) +nfsd4_run_cb_work(struct work_struct *work) { + struct nfsd4_callback *cb = + container_of(work, struct nfsd4_callback, cb_work); struct nfs4_client *clp = cb->cb_clp; struct rpc_clnt *clnt; + if (cb->cb_ops && cb->cb_ops->prepare) + cb->cb_ops->prepare(cb); + if (clp->cl_flags & NFSD4_CLIENT_CB_FLAG_MASK) nfsd4_process_cb_update(cb); clnt = clp->cl_cb_client; if (!clnt) { /* Callback channel broken, or client killed; give up: */ - nfsd4_release_cb(cb); + if (cb->cb_ops && cb->cb_ops->release) + cb->cb_ops->release(cb); return; } cb->cb_msg.rpc_cred = clp->cl_cb_cred; rpc_call_async(clnt, &cb->cb_msg, RPC_TASK_SOFT | RPC_TASK_SOFTCONN, - cb->cb_ops, cb); + cb->cb_ops ? &nfsd4_cb_ops : &nfsd4_cb_probe_ops, cb); } -void -nfsd4_run_cb_null(struct work_struct *w) +void nfsd4_init_cb(struct nfsd4_callback *cb, struct nfs4_client *clp, + struct nfsd4_callback_ops *ops, enum nfsd4_cb_op op) { - struct nfsd4_callback *cb = container_of(w, struct nfsd4_callback, - cb_work); - nfsd4_run_callback_rpc(cb); -} - -void -nfsd4_run_cb_recall(struct work_struct *w) -{ - struct nfsd4_callback *cb = container_of(w, struct nfsd4_callback, - cb_work); - - nfsd4_prepare_cb_recall(cb->cb_op); - nfsd4_run_callback_rpc(cb); -} - -void nfsd4_cb_recall(struct nfs4_delegation *dp) -{ - struct nfsd4_callback *cb = &dp->dl_recall; - struct nfs4_client *clp = dp->dl_stid.sc_client; - - dp->dl_retries = 1; - cb->cb_op = dp; cb->cb_clp = clp; - cb->cb_msg.rpc_proc = &nfs4_cb_procedures[NFSPROC4_CLNT_CB_RECALL]; + cb->cb_msg.rpc_proc = &nfs4_cb_procedures[op]; cb->cb_msg.rpc_argp = cb; cb->cb_msg.rpc_resp = cb; - - cb->cb_ops = &nfsd4_cb_recall_ops; - + cb->cb_ops = ops; + INIT_WORK(&cb->cb_work, nfsd4_run_cb_work); INIT_LIST_HEAD(&cb->cb_per_client); cb->cb_done = true; +} - run_nfsd4_cb(&dp->dl_recall); +void nfsd4_run_cb(struct nfsd4_callback *cb) +{ + queue_work(callback_wq, &cb->cb_work); } diff --git a/fs/nfsd/nfs4idmap.c b/fs/nfsd/nfs4idmap.c index a0ab0a847d69..e1b3d3d472da 100644 --- a/fs/nfsd/nfs4idmap.c +++ b/fs/nfsd/nfs4idmap.c @@ -215,7 +215,8 @@ idtoname_parse(struct cache_detail *cd, char *buf, int buflen) memset(&ent, 0, sizeof(ent)); /* Authentication name */ - if (qword_get(&buf, buf1, PAGE_SIZE) <= 0) + len = qword_get(&buf, buf1, PAGE_SIZE); + if (len <= 0 || len >= IDMAP_NAMESZ) goto out; memcpy(ent.authname, buf1, sizeof(ent.authname)); @@ -245,12 +246,10 @@ idtoname_parse(struct cache_detail *cd, char *buf, int buflen) /* Name */ error = -EINVAL; len = qword_get(&buf, buf1, PAGE_SIZE); - if (len < 0) + if (len < 0 || len >= IDMAP_NAMESZ) goto out; if (len == 0) set_bit(CACHE_NEGATIVE, &ent.h.flags); - else if (len >= IDMAP_NAMESZ) - goto out; else memcpy(ent.name, buf1, sizeof(ent.name)); error = -ENOMEM; @@ -259,15 +258,12 @@ idtoname_parse(struct cache_detail *cd, char *buf, int buflen) goto out; cache_put(&res->h, cd); - error = 0; out: kfree(buf1); - return error; } - static struct ent * idtoname_lookup(struct cache_detail *cd, struct ent *item) { @@ -368,7 +364,7 @@ nametoid_parse(struct cache_detail *cd, char *buf, int buflen) { struct ent ent, *res; char *buf1; - int error = -EINVAL; + int len, error = -EINVAL; if (buf[buflen - 1] != '\n') return (-EINVAL); @@ -381,7 +377,8 @@ nametoid_parse(struct cache_detail *cd, char *buf, int buflen) memset(&ent, 0, sizeof(ent)); /* Authentication name */ - if (qword_get(&buf, buf1, PAGE_SIZE) <= 0) + len = qword_get(&buf, buf1, PAGE_SIZE); + if (len <= 0 || len >= IDMAP_NAMESZ) goto out; memcpy(ent.authname, buf1, sizeof(ent.authname)); @@ -392,8 +389,8 @@ nametoid_parse(struct cache_detail *cd, char *buf, int buflen) IDMAP_TYPE_USER : IDMAP_TYPE_GROUP; /* Name */ - error = qword_get(&buf, buf1, PAGE_SIZE); - if (error <= 0 || error >= IDMAP_NAMESZ) + len = qword_get(&buf, buf1, PAGE_SIZE); + if (len <= 0 || len >= IDMAP_NAMESZ) goto out; memcpy(ent.name, buf1, sizeof(ent.name)); @@ -421,7 +418,6 @@ nametoid_parse(struct cache_detail *cd, char *buf, int buflen) error = 0; out: kfree(buf1); - return (error); } diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c index 5e0dc528a0e8..cdeb3cfd6f32 100644 --- a/fs/nfsd/nfs4proc.c +++ b/fs/nfsd/nfs4proc.c @@ -1013,6 +1013,49 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, return status; } +static __be32 +nfsd4_seek(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, + struct nfsd4_seek *seek) +{ + int whence; + __be32 status; + struct file *file; + + status = nfs4_preprocess_stateid_op(SVC_NET(rqstp), cstate, + &seek->seek_stateid, + RD_STATE, &file); + if (status) { + dprintk("NFSD: nfsd4_seek: couldn't process stateid!\n"); + return status; + } + + switch (seek->seek_whence) { + case NFS4_CONTENT_DATA: + whence = SEEK_DATA; + break; + case NFS4_CONTENT_HOLE: + whence = SEEK_HOLE; + break; + default: + status = nfserr_union_notsupp; + goto out; + } + + /* + * Note: This call does change file->f_pos, but nothing in NFSD + * should ever file->f_pos. + */ + seek->seek_pos = vfs_llseek(file, seek->seek_offset, whence); + if (seek->seek_pos < 0) + status = nfserrno(seek->seek_pos); + else if (seek->seek_pos >= i_size_read(file_inode(file))) + seek->seek_eof = true; + +out: + fput(file); + return status; +} + /* This routine never returns NFS_OK! If there are no other errors, it * will return NFSERR_SAME or NFSERR_NOT_SAME depending on whether the * attributes matched. VERIFY is implemented by mapping NFSERR_SAME @@ -1881,6 +1924,12 @@ static struct nfsd4_operation nfsd4_ops[] = { .op_get_currentstateid = (stateid_getter)nfsd4_get_freestateid, .op_rsize_bop = (nfsd4op_rsize)nfsd4_only_status_rsize, }, + + /* NFSv4.2 operations */ + [OP_SEEK] = { + .op_func = (nfsd4op_func)nfsd4_seek, + .op_name = "OP_SEEK", + }, }; int nfsd4_max_reply(struct svc_rqst *rqstp, struct nfsd4_op *op) diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c index 9c271f42604a..ea95a2bc21b5 100644 --- a/fs/nfsd/nfs4recover.c +++ b/fs/nfsd/nfs4recover.c @@ -58,7 +58,7 @@ struct nfsd4_client_tracking_ops { void (*create)(struct nfs4_client *); void (*remove)(struct nfs4_client *); int (*check)(struct nfs4_client *); - void (*grace_done)(struct nfsd_net *, time_t); + void (*grace_done)(struct nfsd_net *); }; /* Globals */ @@ -188,7 +188,7 @@ nfsd4_create_clid_dir(struct nfs4_client *clp) status = mnt_want_write_file(nn->rec_file); if (status) - return; + goto out_creds; dir = nn->rec_file->f_path.dentry; /* lock the parent */ @@ -228,6 +228,7 @@ out_unlock: user_recovery_dirname); } mnt_drop_write_file(nn->rec_file); +out_creds: nfs4_reset_creds(original_cred); } @@ -392,7 +393,7 @@ purge_old(struct dentry *parent, struct dentry *child, struct nfsd_net *nn) } static void -nfsd4_recdir_purge_old(struct nfsd_net *nn, time_t boot_time) +nfsd4_recdir_purge_old(struct nfsd_net *nn) { int status; @@ -479,6 +480,16 @@ nfsd4_init_recdir(struct net *net) return status; } +static void +nfsd4_shutdown_recdir(struct net *net) +{ + struct nfsd_net *nn = net_generic(net, nfsd_net_id); + + if (!nn->rec_file) + return; + fput(nn->rec_file); + nn->rec_file = NULL; +} static int nfs4_legacy_state_init(struct net *net) @@ -512,10 +523,13 @@ nfsd4_load_reboot_recovery_data(struct net *net) int status; status = nfsd4_init_recdir(net); - if (!status) - status = nfsd4_recdir_load(net); if (status) - printk(KERN_ERR "NFSD: Failure reading reboot recovery data\n"); + return status; + + status = nfsd4_recdir_load(net); + if (status) + nfsd4_shutdown_recdir(net); + return status; } @@ -546,21 +560,12 @@ err: } static void -nfsd4_shutdown_recdir(struct nfsd_net *nn) -{ - if (!nn->rec_file) - return; - fput(nn->rec_file); - nn->rec_file = NULL; -} - -static void nfsd4_legacy_tracking_exit(struct net *net) { struct nfsd_net *nn = net_generic(net, nfsd_net_id); nfs4_release_reclaim(nn); - nfsd4_shutdown_recdir(nn); + nfsd4_shutdown_recdir(net); nfs4_legacy_state_shutdown(net); } @@ -1016,7 +1021,7 @@ nfsd4_cld_check(struct nfs4_client *clp) } static void -nfsd4_cld_grace_done(struct nfsd_net *nn, time_t boot_time) +nfsd4_cld_grace_done(struct nfsd_net *nn) { int ret; struct cld_upcall *cup; @@ -1029,7 +1034,7 @@ nfsd4_cld_grace_done(struct nfsd_net *nn, time_t boot_time) } cup->cu_msg.cm_cmd = Cld_GraceDone; - cup->cu_msg.cm_u.cm_gracetime = (int64_t)boot_time; + cup->cu_msg.cm_u.cm_gracetime = (int64_t)nn->boot_time; ret = cld_pipe_upcall(cn->cn_pipe, &cup->cu_msg); if (!ret) ret = cup->cu_msg.cm_status; @@ -1062,6 +1067,8 @@ MODULE_PARM_DESC(cltrack_legacy_disable, #define LEGACY_TOPDIR_ENV_PREFIX "NFSDCLTRACK_LEGACY_TOPDIR=" #define LEGACY_RECDIR_ENV_PREFIX "NFSDCLTRACK_LEGACY_RECDIR=" +#define HAS_SESSION_ENV_PREFIX "NFSDCLTRACK_CLIENT_HAS_SESSION=" +#define GRACE_START_ENV_PREFIX "NFSDCLTRACK_GRACE_START=" static char * nfsd4_cltrack_legacy_topdir(void) @@ -1126,10 +1133,60 @@ nfsd4_cltrack_legacy_recdir(const struct xdr_netobj *name) return result; } +static char * +nfsd4_cltrack_client_has_session(struct nfs4_client *clp) +{ + int copied; + size_t len; + char *result; + + /* prefix + Y/N character + terminating NULL */ + len = strlen(HAS_SESSION_ENV_PREFIX) + 1 + 1; + + result = kmalloc(len, GFP_KERNEL); + if (!result) + return result; + + copied = snprintf(result, len, HAS_SESSION_ENV_PREFIX "%c", + clp->cl_minorversion ? 'Y' : 'N'); + if (copied >= len) { + /* just return nothing if output was truncated */ + kfree(result); + return NULL; + } + + return result; +} + +static char * +nfsd4_cltrack_grace_start(time_t grace_start) +{ + int copied; + size_t len; + char *result; + + /* prefix + max width of int64_t string + terminating NULL */ + len = strlen(GRACE_START_ENV_PREFIX) + 22 + 1; + + result = kmalloc(len, GFP_KERNEL); + if (!result) + return result; + + copied = snprintf(result, len, GRACE_START_ENV_PREFIX "%ld", + grace_start); + if (copied >= len) { + /* just return nothing if output was truncated */ + kfree(result); + return NULL; + } + + return result; +} + static int -nfsd4_umh_cltrack_upcall(char *cmd, char *arg, char *legacy) +nfsd4_umh_cltrack_upcall(char *cmd, char *arg, char *env0, char *env1) { - char *envp[2]; + char *envp[3]; char *argv[4]; int ret; @@ -1140,10 +1197,12 @@ nfsd4_umh_cltrack_upcall(char *cmd, char *arg, char *legacy) dprintk("%s: cmd: %s\n", __func__, cmd); dprintk("%s: arg: %s\n", __func__, arg ? arg : "(null)"); - dprintk("%s: legacy: %s\n", __func__, legacy ? legacy : "(null)"); + dprintk("%s: env0: %s\n", __func__, env0 ? env0 : "(null)"); + dprintk("%s: env1: %s\n", __func__, env1 ? env1 : "(null)"); - envp[0] = legacy; - envp[1] = NULL; + envp[0] = env0; + envp[1] = env1; + envp[2] = NULL; argv[0] = (char *)cltrack_prog; argv[1] = cmd; @@ -1187,28 +1246,78 @@ bin_to_hex_dup(const unsigned char *src, int srclen) } static int -nfsd4_umh_cltrack_init(struct net __attribute__((unused)) *net) +nfsd4_umh_cltrack_init(struct net *net) { + int ret; + struct nfsd_net *nn = net_generic(net, nfsd_net_id); + char *grace_start = nfsd4_cltrack_grace_start(nn->boot_time); + /* XXX: The usermode helper s not working in container yet. */ if (net != &init_net) { WARN(1, KERN_ERR "NFSD: attempt to initialize umh client " "tracking in a container!\n"); return -EINVAL; } - return nfsd4_umh_cltrack_upcall("init", NULL, NULL); + + ret = nfsd4_umh_cltrack_upcall("init", NULL, grace_start, NULL); + kfree(grace_start); + return ret; +} + +static void +nfsd4_cltrack_upcall_lock(struct nfs4_client *clp) +{ + wait_on_bit_lock(&clp->cl_flags, NFSD4_CLIENT_UPCALL_LOCK, + TASK_UNINTERRUPTIBLE); +} + +static void +nfsd4_cltrack_upcall_unlock(struct nfs4_client *clp) +{ + smp_mb__before_atomic(); + clear_bit(NFSD4_CLIENT_UPCALL_LOCK, &clp->cl_flags); + smp_mb__after_atomic(); + wake_up_bit(&clp->cl_flags, NFSD4_CLIENT_UPCALL_LOCK); } static void nfsd4_umh_cltrack_create(struct nfs4_client *clp) { - char *hexid; + char *hexid, *has_session, *grace_start; + struct nfsd_net *nn = net_generic(clp->net, nfsd_net_id); + + /* + * With v4.0 clients, there's little difference in outcome between a + * create and check operation, and we can end up calling into this + * function multiple times per client (once for each openowner). So, + * for v4.0 clients skip upcalling once the client has been recorded + * on stable storage. + * + * For v4.1+ clients, the outcome of the two operations is different, + * so we must ensure that we upcall for the create operation. v4.1+ + * clients call this on RECLAIM_COMPLETE though, so we should only end + * up doing a single create upcall per client. + */ + if (clp->cl_minorversion == 0 && + test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags)) + return; hexid = bin_to_hex_dup(clp->cl_name.data, clp->cl_name.len); if (!hexid) { dprintk("%s: can't allocate memory for upcall!\n", __func__); return; } - nfsd4_umh_cltrack_upcall("create", hexid, NULL); + + has_session = nfsd4_cltrack_client_has_session(clp); + grace_start = nfsd4_cltrack_grace_start(nn->boot_time); + + nfsd4_cltrack_upcall_lock(clp); + if (!nfsd4_umh_cltrack_upcall("create", hexid, has_session, grace_start)) + set_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags); + nfsd4_cltrack_upcall_unlock(clp); + + kfree(has_session); + kfree(grace_start); kfree(hexid); } @@ -1217,12 +1326,21 @@ nfsd4_umh_cltrack_remove(struct nfs4_client *clp) { char *hexid; + if (!test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags)) + return; + hexid = bin_to_hex_dup(clp->cl_name.data, clp->cl_name.len); if (!hexid) { dprintk("%s: can't allocate memory for upcall!\n", __func__); return; } - nfsd4_umh_cltrack_upcall("remove", hexid, NULL); + + nfsd4_cltrack_upcall_lock(clp); + if (test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags) && + nfsd4_umh_cltrack_upcall("remove", hexid, NULL, NULL) == 0) + clear_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags); + nfsd4_cltrack_upcall_unlock(clp); + kfree(hexid); } @@ -1230,30 +1348,45 @@ static int nfsd4_umh_cltrack_check(struct nfs4_client *clp) { int ret; - char *hexid, *legacy; + char *hexid, *has_session, *legacy; + + if (test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags)) + return 0; hexid = bin_to_hex_dup(clp->cl_name.data, clp->cl_name.len); if (!hexid) { dprintk("%s: can't allocate memory for upcall!\n", __func__); return -ENOMEM; } + + has_session = nfsd4_cltrack_client_has_session(clp); legacy = nfsd4_cltrack_legacy_recdir(&clp->cl_name); - ret = nfsd4_umh_cltrack_upcall("check", hexid, legacy); + + nfsd4_cltrack_upcall_lock(clp); + if (test_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags)) { + ret = 0; + } else { + ret = nfsd4_umh_cltrack_upcall("check", hexid, has_session, legacy); + if (ret == 0) + set_bit(NFSD4_CLIENT_STABLE, &clp->cl_flags); + } + nfsd4_cltrack_upcall_unlock(clp); + kfree(has_session); kfree(legacy); kfree(hexid); + return ret; } static void -nfsd4_umh_cltrack_grace_done(struct nfsd_net __attribute__((unused)) *nn, - time_t boot_time) +nfsd4_umh_cltrack_grace_done(struct nfsd_net *nn) { char *legacy; char timestr[22]; /* FIXME: better way to determine max size? */ - sprintf(timestr, "%ld", boot_time); + sprintf(timestr, "%ld", nn->boot_time); legacy = nfsd4_cltrack_legacy_topdir(); - nfsd4_umh_cltrack_upcall("gracedone", timestr, legacy); + nfsd4_umh_cltrack_upcall("gracedone", timestr, legacy, NULL); kfree(legacy); } @@ -1356,10 +1489,10 @@ nfsd4_client_record_check(struct nfs4_client *clp) } void -nfsd4_record_grace_done(struct nfsd_net *nn, time_t boot_time) +nfsd4_record_grace_done(struct nfsd_net *nn) { if (nn->client_tracking_ops) - nn->client_tracking_ops->grace_done(nn, boot_time); + nn->client_tracking_ops->grace_done(nn); } static int diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c index 2e80a59e7e91..5c0cac173068 100644 --- a/fs/nfsd/nfs4state.c +++ b/fs/nfsd/nfs4state.c @@ -96,6 +96,8 @@ static struct kmem_cache *deleg_slab; static void free_session(struct nfsd4_session *); +static struct nfsd4_callback_ops nfsd4_cb_recall_ops; + static bool is_session_dead(struct nfsd4_session *ses) { return ses->se_flags & NFS4_SESSION_DEAD; @@ -645,7 +647,9 @@ alloc_init_deleg(struct nfs4_client *clp, struct svc_fh *current_fh) INIT_LIST_HEAD(&dp->dl_perclnt); INIT_LIST_HEAD(&dp->dl_recall_lru); dp->dl_type = NFS4_OPEN_DELEGATE_READ; - INIT_WORK(&dp->dl_recall.cb_work, nfsd4_run_cb_recall); + dp->dl_retries = 1; + nfsd4_init_cb(&dp->dl_recall, dp->dl_stid.sc_client, + &nfsd4_cb_recall_ops, NFSPROC4_CLNT_CB_RECALL); return dp; out_dec: atomic_long_dec(&num_delegations); @@ -673,15 +677,20 @@ nfs4_put_stid(struct nfs4_stid *s) static void nfs4_put_deleg_lease(struct nfs4_file *fp) { - lockdep_assert_held(&state_lock); + struct file *filp = NULL; + struct file_lock *fl; - if (!fp->fi_lease) - return; - if (atomic_dec_and_test(&fp->fi_delegees)) { - vfs_setlease(fp->fi_deleg_file, F_UNLCK, &fp->fi_lease); + spin_lock(&fp->fi_lock); + if (fp->fi_lease && atomic_dec_and_test(&fp->fi_delegees)) { + swap(filp, fp->fi_deleg_file); + fl = fp->fi_lease; fp->fi_lease = NULL; - fput(fp->fi_deleg_file); - fp->fi_deleg_file = NULL; + } + spin_unlock(&fp->fi_lock); + + if (filp) { + vfs_setlease(filp, F_UNLCK, &fl); + fput(filp); } } @@ -717,8 +726,6 @@ unhash_delegation_locked(struct nfs4_delegation *dp) list_del_init(&dp->dl_recall_lru); list_del_init(&dp->dl_perfile); spin_unlock(&fp->fi_lock); - if (fp) - nfs4_put_deleg_lease(fp); } static void destroy_delegation(struct nfs4_delegation *dp) @@ -726,6 +733,7 @@ static void destroy_delegation(struct nfs4_delegation *dp) spin_lock(&state_lock); unhash_delegation_locked(dp); spin_unlock(&state_lock); + nfs4_put_deleg_lease(dp->dl_stid.sc_file); nfs4_put_stid(&dp->dl_stid); } @@ -735,6 +743,8 @@ static void revoke_delegation(struct nfs4_delegation *dp) WARN_ON(!list_empty(&dp->dl_recall_lru)); + nfs4_put_deleg_lease(dp->dl_stid.sc_file); + if (clp->cl_minorversion == 0) nfs4_put_stid(&dp->dl_stid); else { @@ -1635,6 +1645,7 @@ __destroy_client(struct nfs4_client *clp) while (!list_empty(&reaplist)) { dp = list_entry(reaplist.next, struct nfs4_delegation, dl_recall_lru); list_del_init(&dp->dl_recall_lru); + nfs4_put_deleg_lease(dp->dl_stid.sc_file); nfs4_put_stid(&dp->dl_stid); } while (!list_empty(&clp->cl_revoked)) { @@ -1862,7 +1873,7 @@ static struct nfs4_client *create_client(struct xdr_netobj name, free_client(clp); return NULL; } - INIT_WORK(&clp->cl_cb_null.cb_work, nfsd4_run_cb_null); + nfsd4_init_cb(&clp->cl_cb_null, clp, NULL, NFSPROC4_CLNT_CB_NULL); clp->cl_time = get_seconds(); clear_bit(0, &clp->cl_cb_slot_busy); copy_verf(clp, verf); @@ -3349,8 +3360,9 @@ nfs4_share_conflict(struct svc_fh *current_fh, unsigned int deny_type) return ret; } -void nfsd4_prepare_cb_recall(struct nfs4_delegation *dp) +static void nfsd4_cb_recall_prepare(struct nfsd4_callback *cb) { + struct nfs4_delegation *dp = cb_to_delegation(cb); struct nfsd_net *nn = net_generic(dp->dl_stid.sc_client->net, nfsd_net_id); @@ -3371,6 +3383,43 @@ void nfsd4_prepare_cb_recall(struct nfs4_delegation *dp) spin_unlock(&state_lock); } +static int nfsd4_cb_recall_done(struct nfsd4_callback *cb, + struct rpc_task *task) +{ + struct nfs4_delegation *dp = cb_to_delegation(cb); + + switch (task->tk_status) { + case 0: + return 1; + case -EBADHANDLE: + case -NFS4ERR_BAD_STATEID: + /* + * Race: client probably got cb_recall before open reply + * granting delegation. + */ + if (dp->dl_retries--) { + rpc_delay(task, 2 * HZ); + return 0; + } + /*FALLTHRU*/ + default: + return -1; + } +} + +static void nfsd4_cb_recall_release(struct nfsd4_callback *cb) +{ + struct nfs4_delegation *dp = cb_to_delegation(cb); + + nfs4_put_stid(&dp->dl_stid); +} + +static struct nfsd4_callback_ops nfsd4_cb_recall_ops = { + .prepare = nfsd4_cb_recall_prepare, + .done = nfsd4_cb_recall_done, + .release = nfsd4_cb_recall_release, +}; + static void nfsd_break_one_deleg(struct nfs4_delegation *dp) { /* @@ -3381,7 +3430,7 @@ static void nfsd_break_one_deleg(struct nfs4_delegation *dp) * it's safe to take a reference. */ atomic_inc(&dp->dl_stid.sc_count); - nfsd4_cb_recall(dp); + nfsd4_run_cb(&dp->dl_recall); } /* Called from break_lease() with i_lock held. */ @@ -3759,7 +3808,6 @@ static struct file_lock *nfs4_alloc_init_lease(struct nfs4_file *fp, int flag) fl = locks_alloc_lock(); if (!fl) return NULL; - locks_init_lock(fl); fl->fl_lmops = &nfsd_lease_mng_ops; fl->fl_flags = FL_DELEG; fl->fl_type = flag == NFS4_OPEN_DELEGATE_READ? F_RDLCK: F_WRLCK; @@ -4107,7 +4155,7 @@ out: return status; } -static void +void nfsd4_end_grace(struct nfsd_net *nn) { /* do nothing if grace period already ended */ @@ -4116,14 +4164,28 @@ nfsd4_end_grace(struct nfsd_net *nn) dprintk("NFSD: end of grace period\n"); nn->grace_ended = true; - nfsd4_record_grace_done(nn, nn->boot_time); + /* + * If the server goes down again right now, an NFSv4 + * client will still be allowed to reclaim after it comes back up, + * even if it hasn't yet had a chance to reclaim state this time. + * + */ + nfsd4_record_grace_done(nn); + /* + * At this point, NFSv4 clients can still reclaim. But if the + * server crashes, any that have not yet reclaimed will be out + * of luck on the next boot. + * + * (NFSv4.1+ clients are considered to have reclaimed once they + * call RECLAIM_COMPLETE. NFSv4.0 clients are considered to + * have reclaimed after their first OPEN.) + */ locks_end_grace(&nn->nfsd4_manager); /* - * Now that every NFSv4 client has had the chance to recover and - * to see the (possibly new, possibly shorter) lease time, we - * can safely set the next grace time to the current lease time: + * At this point, and once lockd and/or any other containers + * exit their grace period, further reclaims will fail and + * regular locking can resume. */ - nn->nfsd4_grace = nn->nfsd4_lease; } static time_t @@ -5210,7 +5272,6 @@ nfsd4_lock(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, } fp = lock_stp->st_stid.sc_file; - locks_init_lock(file_lock); switch (lock->lk_type) { case NFS4_READ_LT: case NFS4_READW_LT: @@ -5354,7 +5415,7 @@ nfsd4_lockt(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, status = nfserr_jukebox; goto out; } - locks_init_lock(file_lock); + switch (lockt->lt_type) { case NFS4_READ_LT: case NFS4_READW_LT: @@ -5432,7 +5493,7 @@ nfsd4_locku(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate, status = nfserr_jukebox; goto fput; } - locks_init_lock(file_lock); + file_lock->fl_type = F_UNLCK; file_lock->fl_owner = (fl_owner_t)lockowner(stp->st_stateowner); file_lock->fl_pid = current->tgid; @@ -5645,6 +5706,9 @@ nfs4_check_open_reclaim(clientid_t *clid, if (status) return nfserr_reclaim_bad; + if (test_bit(NFSD4_CLIENT_RECLAIM_COMPLETE, &cstate->clp->cl_flags)) + return nfserr_no_grace; + if (nfsd4_client_record_check(cstate->clp)) return nfserr_reclaim_bad; @@ -6342,10 +6406,10 @@ nfs4_state_start_net(struct net *net) ret = nfs4_state_create_net(net); if (ret) return ret; - nfsd4_client_tracking_init(net); nn->boot_time = get_seconds(); - locks_start_grace(net, &nn->nfsd4_manager); nn->grace_ended = false; + locks_start_grace(net, &nn->nfsd4_manager); + nfsd4_client_tracking_init(net); printk(KERN_INFO "NFSD: starting %ld-second grace period (net %p)\n", nn->nfsd4_grace, net); queue_delayed_work(laundry_wq, &nn->laundromat_work, nn->nfsd4_grace * HZ); @@ -6402,6 +6466,7 @@ nfs4_state_shutdown_net(struct net *net) list_for_each_safe(pos, next, &reaplist) { dp = list_entry (pos, struct nfs4_delegation, dl_recall_lru); list_del_init(&dp->dl_recall_lru); + nfs4_put_deleg_lease(dp->dl_stid.sc_file); nfs4_put_stid(&dp->dl_stid); } diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c index f9821ce6658a..eeea7a90eb87 100644 --- a/fs/nfsd/nfs4xdr.c +++ b/fs/nfsd/nfs4xdr.c @@ -31,13 +31,6 @@ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * TODO: Neil Brown made the following observation: We currently - * initially reserve NFSD_BUFSIZE space on the transmit queue and - * never release any of that until the request is complete. - * It would be good to calculate a new maximum response size while - * decoding the COMPOUND, and call svc_reserve with this number - * at the end of nfs4svc_decode_compoundargs. */ #include <linux/slab.h> @@ -1521,6 +1514,22 @@ static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, str } static __be32 +nfsd4_decode_seek(struct nfsd4_compoundargs *argp, struct nfsd4_seek *seek) +{ + DECODE_HEAD; + + status = nfsd4_decode_stateid(argp, &seek->seek_stateid); + if (status) + return status; + + READ_BUF(8 + 4); + p = xdr_decode_hyper(p, &seek->seek_offset); + seek->seek_whence = be32_to_cpup(p); + + DECODE_TAIL; +} + +static __be32 nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) { return nfs_ok; @@ -1593,6 +1602,20 @@ static nfsd4_dec nfsd4_dec_ops[] = { [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, + + /* new operations for NFSv4.2 */ + [OP_ALLOCATE] = (nfsd4_dec)nfsd4_decode_notsupp, + [OP_COPY] = (nfsd4_dec)nfsd4_decode_notsupp, + [OP_COPY_NOTIFY] = (nfsd4_dec)nfsd4_decode_notsupp, + [OP_DEALLOCATE] = (nfsd4_dec)nfsd4_decode_notsupp, + [OP_IO_ADVISE] = (nfsd4_dec)nfsd4_decode_notsupp, + [OP_LAYOUTERROR] = (nfsd4_dec)nfsd4_decode_notsupp, + [OP_LAYOUTSTATS] = (nfsd4_dec)nfsd4_decode_notsupp, + [OP_OFFLOAD_CANCEL] = (nfsd4_dec)nfsd4_decode_notsupp, + [OP_OFFLOAD_STATUS] = (nfsd4_dec)nfsd4_decode_notsupp, + [OP_READ_PLUS] = (nfsd4_dec)nfsd4_decode_notsupp, + [OP_SEEK] = (nfsd4_dec)nfsd4_decode_seek, + [OP_WRITE_SAME] = (nfsd4_dec)nfsd4_decode_notsupp, }; static inline bool @@ -1670,6 +1693,14 @@ nfsd4_decode_compound(struct nfsd4_compoundargs *argp) readbytes += nfsd4_max_reply(argp->rqstp, op); } else max_reply += nfsd4_max_reply(argp->rqstp, op); + /* + * OP_LOCK may return a conflicting lock. (Special case + * because it will just skip encoding this if it runs + * out of xdr buffer space, and it is the only operation + * that behaves this way.) + */ + if (op->opnum == OP_LOCK) + max_reply += NFS4_OPAQUE_LIMIT; if (op->status) { argp->opcnt = i+1; @@ -2657,6 +2688,7 @@ nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, struct xdr_stream *xdr = cd->xdr; int start_offset = xdr->buf->len; int cookie_offset; + u32 name_and_cookie; int entry_bytes; __be32 nfserr = nfserr_toosmall; __be64 wire_offset; @@ -2718,7 +2750,14 @@ nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, cd->rd_maxcount -= entry_bytes; if (!cd->rd_dircount) goto fail; - cd->rd_dircount--; + /* + * RFC 3530 14.2.24 describes rd_dircount as only a "hint", so + * let's always let through the first entry, at least: + */ + name_and_cookie = 4 * XDR_QUADLEN(namlen) + 8; + if (name_and_cookie > cd->rd_dircount && cd->cookie_offset) + goto fail; + cd->rd_dircount -= min(cd->rd_dircount, name_and_cookie); cd->cookie_offset = cookie_offset; skip_entry: cd->common.err = nfs_ok; @@ -3096,7 +3135,8 @@ static __be32 nfsd4_encode_splice_read( buf->page_len = maxcount; buf->len += maxcount; - xdr->page_ptr += (maxcount + PAGE_SIZE - 1) / PAGE_SIZE; + xdr->page_ptr += (buf->page_base + maxcount + PAGE_SIZE - 1) + / PAGE_SIZE; /* Use rest of head for padding and remaining ops: */ buf->tail[0].iov_base = xdr->p; @@ -3321,6 +3361,10 @@ nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4 } maxcount = min_t(int, maxcount-16, bytes_left); + /* RFC 3530 14.2.24 allows us to ignore dircount when it's 0: */ + if (!readdir->rd_dircount) + readdir->rd_dircount = INT_MAX; + readdir->xdr = xdr; readdir->rd_maxcount = maxcount; readdir->common.err = 0; @@ -3751,6 +3795,22 @@ nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, } static __be32 +nfsd4_encode_seek(struct nfsd4_compoundres *resp, __be32 nfserr, + struct nfsd4_seek *seek) +{ + __be32 *p; + + if (nfserr) + return nfserr; + + p = xdr_reserve_space(&resp->xdr, 4 + 8); + *p++ = cpu_to_be32(seek->seek_eof); + p = xdr_encode_hyper(p, seek->seek_pos); + + return nfserr; +} + +static __be32 nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) { return nfserr; @@ -3822,6 +3882,20 @@ static nfsd4_enc nfsd4_enc_ops[] = { [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, + + /* NFSv4.2 operations */ + [OP_ALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, + [OP_COPY] = (nfsd4_enc)nfsd4_encode_noop, + [OP_COPY_NOTIFY] = (nfsd4_enc)nfsd4_encode_noop, + [OP_DEALLOCATE] = (nfsd4_enc)nfsd4_encode_noop, + [OP_IO_ADVISE] = (nfsd4_enc)nfsd4_encode_noop, + [OP_LAYOUTERROR] = (nfsd4_enc)nfsd4_encode_noop, + [OP_LAYOUTSTATS] = (nfsd4_enc)nfsd4_encode_noop, + [OP_OFFLOAD_CANCEL] = (nfsd4_enc)nfsd4_encode_noop, + [OP_OFFLOAD_STATUS] = (nfsd4_enc)nfsd4_encode_noop, + [OP_READ_PLUS] = (nfsd4_enc)nfsd4_encode_noop, + [OP_SEEK] = (nfsd4_enc)nfsd4_encode_seek, + [OP_WRITE_SAME] = (nfsd4_enc)nfsd4_encode_noop, }; /* diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c index ff9567633245..122f69185ef5 100644 --- a/fs/nfsd/nfscache.c +++ b/fs/nfsd/nfscache.c @@ -27,8 +27,12 @@ */ #define TARGET_BUCKET_SIZE 64 -static struct hlist_head * cache_hash; -static struct list_head lru_head; +struct nfsd_drc_bucket { + struct list_head lru_head; + spinlock_t cache_lock; +}; + +static struct nfsd_drc_bucket *drc_hashtbl; static struct kmem_cache *drc_slab; /* max number of entries allowed in the cache */ @@ -36,6 +40,7 @@ static unsigned int max_drc_entries; /* number of significant bits in the hash value */ static unsigned int maskbits; +static unsigned int drc_hashsize; /* * Stats and other tracking of on the duplicate reply cache. All of these and @@ -43,7 +48,7 @@ static unsigned int maskbits; */ /* total number of entries */ -static unsigned int num_drc_entries; +static atomic_t num_drc_entries; /* cache misses due only to checksum comparison failures */ static unsigned int payload_misses; @@ -75,7 +80,6 @@ static struct shrinker nfsd_reply_cache_shrinker = { * A cache entry is "single use" if c_state == RC_INPROG * Otherwise, it when accessing _prev or _next, the lock must be held. */ -static DEFINE_SPINLOCK(cache_lock); static DECLARE_DELAYED_WORK(cache_cleaner, cache_cleaner_func); /* @@ -116,6 +120,12 @@ nfsd_hashsize(unsigned int limit) return roundup_pow_of_two(limit / TARGET_BUCKET_SIZE); } +static u32 +nfsd_cache_hash(__be32 xid) +{ + return hash_32(be32_to_cpu(xid), maskbits); +} + static struct svc_cacherep * nfsd_reply_cache_alloc(void) { @@ -126,7 +136,6 @@ nfsd_reply_cache_alloc(void) rp->c_state = RC_UNUSED; rp->c_type = RC_NOCACHE; INIT_LIST_HEAD(&rp->c_lru); - INIT_HLIST_NODE(&rp->c_hash); } return rp; } @@ -138,29 +147,27 @@ nfsd_reply_cache_free_locked(struct svc_cacherep *rp) drc_mem_usage -= rp->c_replvec.iov_len; kfree(rp->c_replvec.iov_base); } - if (!hlist_unhashed(&rp->c_hash)) - hlist_del(&rp->c_hash); list_del(&rp->c_lru); - --num_drc_entries; + atomic_dec(&num_drc_entries); drc_mem_usage -= sizeof(*rp); kmem_cache_free(drc_slab, rp); } static void -nfsd_reply_cache_free(struct svc_cacherep *rp) +nfsd_reply_cache_free(struct nfsd_drc_bucket *b, struct svc_cacherep *rp) { - spin_lock(&cache_lock); + spin_lock(&b->cache_lock); nfsd_reply_cache_free_locked(rp); - spin_unlock(&cache_lock); + spin_unlock(&b->cache_lock); } int nfsd_reply_cache_init(void) { unsigned int hashsize; + unsigned int i; - INIT_LIST_HEAD(&lru_head); max_drc_entries = nfsd_cache_size_limit(); - num_drc_entries = 0; + atomic_set(&num_drc_entries, 0); hashsize = nfsd_hashsize(max_drc_entries); maskbits = ilog2(hashsize); @@ -170,9 +177,14 @@ int nfsd_reply_cache_init(void) if (!drc_slab) goto out_nomem; - cache_hash = kcalloc(hashsize, sizeof(struct hlist_head), GFP_KERNEL); - if (!cache_hash) + drc_hashtbl = kcalloc(hashsize, sizeof(*drc_hashtbl), GFP_KERNEL); + if (!drc_hashtbl) goto out_nomem; + for (i = 0; i < hashsize; i++) { + INIT_LIST_HEAD(&drc_hashtbl[i].lru_head); + spin_lock_init(&drc_hashtbl[i].cache_lock); + } + drc_hashsize = hashsize; return 0; out_nomem: @@ -184,17 +196,22 @@ out_nomem: void nfsd_reply_cache_shutdown(void) { struct svc_cacherep *rp; + unsigned int i; unregister_shrinker(&nfsd_reply_cache_shrinker); cancel_delayed_work_sync(&cache_cleaner); - while (!list_empty(&lru_head)) { - rp = list_entry(lru_head.next, struct svc_cacherep, c_lru); - nfsd_reply_cache_free_locked(rp); + for (i = 0; i < drc_hashsize; i++) { + struct list_head *head = &drc_hashtbl[i].lru_head; + while (!list_empty(head)) { + rp = list_first_entry(head, struct svc_cacherep, c_lru); + nfsd_reply_cache_free_locked(rp); + } } - kfree (cache_hash); - cache_hash = NULL; + kfree (drc_hashtbl); + drc_hashtbl = NULL; + drc_hashsize = 0; if (drc_slab) { kmem_cache_destroy(drc_slab); @@ -207,61 +224,63 @@ void nfsd_reply_cache_shutdown(void) * not already scheduled. */ static void -lru_put_end(struct svc_cacherep *rp) +lru_put_end(struct nfsd_drc_bucket *b, struct svc_cacherep *rp) { rp->c_timestamp = jiffies; - list_move_tail(&rp->c_lru, &lru_head); + list_move_tail(&rp->c_lru, &b->lru_head); schedule_delayed_work(&cache_cleaner, RC_EXPIRE); } -/* - * Move a cache entry from one hash list to another - */ -static void -hash_refile(struct svc_cacherep *rp) -{ - hlist_del_init(&rp->c_hash); - /* - * No point in byte swapping c_xid since we're just using it to pick - * a hash bucket. - */ - hlist_add_head(&rp->c_hash, cache_hash + - hash_32((__force u32)rp->c_xid, maskbits)); -} - -/* - * Walk the LRU list and prune off entries that are older than RC_EXPIRE. - * Also prune the oldest ones when the total exceeds the max number of entries. - */ static long -prune_cache_entries(void) +prune_bucket(struct nfsd_drc_bucket *b) { struct svc_cacherep *rp, *tmp; long freed = 0; - list_for_each_entry_safe(rp, tmp, &lru_head, c_lru) { + list_for_each_entry_safe(rp, tmp, &b->lru_head, c_lru) { /* * Don't free entries attached to calls that are still * in-progress, but do keep scanning the list. */ if (rp->c_state == RC_INPROG) continue; - if (num_drc_entries <= max_drc_entries && + if (atomic_read(&num_drc_entries) <= max_drc_entries && time_before(jiffies, rp->c_timestamp + RC_EXPIRE)) break; nfsd_reply_cache_free_locked(rp); freed++; } + return freed; +} + +/* + * Walk the LRU list and prune off entries that are older than RC_EXPIRE. + * Also prune the oldest ones when the total exceeds the max number of entries. + */ +static long +prune_cache_entries(void) +{ + unsigned int i; + long freed = 0; + bool cancel = true; + + for (i = 0; i < drc_hashsize; i++) { + struct nfsd_drc_bucket *b = &drc_hashtbl[i]; + + if (list_empty(&b->lru_head)) + continue; + spin_lock(&b->cache_lock); + freed += prune_bucket(b); + if (!list_empty(&b->lru_head)) + cancel = false; + spin_unlock(&b->cache_lock); + } /* - * Conditionally rearm the job. If we cleaned out the list, then - * cancel any pending run (since there won't be any work to do). - * Otherwise, we rearm the job or modify the existing one to run in - * RC_EXPIRE since we just ran the pruner. + * Conditionally rearm the job to run in RC_EXPIRE since we just + * ran the pruner. */ - if (list_empty(&lru_head)) - cancel_delayed_work(&cache_cleaner); - else + if (!cancel) mod_delayed_work(system_wq, &cache_cleaner, RC_EXPIRE); return freed; } @@ -269,32 +288,19 @@ prune_cache_entries(void) static void cache_cleaner_func(struct work_struct *unused) { - spin_lock(&cache_lock); prune_cache_entries(); - spin_unlock(&cache_lock); } static unsigned long nfsd_reply_cache_count(struct shrinker *shrink, struct shrink_control *sc) { - unsigned long num; - - spin_lock(&cache_lock); - num = num_drc_entries; - spin_unlock(&cache_lock); - - return num; + return atomic_read(&num_drc_entries); } static unsigned long nfsd_reply_cache_scan(struct shrinker *shrink, struct shrink_control *sc) { - unsigned long freed; - - spin_lock(&cache_lock); - freed = prune_cache_entries(); - spin_unlock(&cache_lock); - return freed; + return prune_cache_entries(); } /* * Walk an xdr_buf and get a CRC for at most the first RC_CSUMLEN bytes @@ -332,20 +338,24 @@ nfsd_cache_csum(struct svc_rqst *rqstp) static bool nfsd_cache_match(struct svc_rqst *rqstp, __wsum csum, struct svc_cacherep *rp) { - /* Check RPC header info first */ - if (rqstp->rq_xid != rp->c_xid || rqstp->rq_proc != rp->c_proc || - rqstp->rq_prot != rp->c_prot || rqstp->rq_vers != rp->c_vers || - rqstp->rq_arg.len != rp->c_len || - !rpc_cmp_addr(svc_addr(rqstp), (struct sockaddr *)&rp->c_addr) || - rpc_get_port(svc_addr(rqstp)) != rpc_get_port((struct sockaddr *)&rp->c_addr)) + /* Check RPC XID first */ + if (rqstp->rq_xid != rp->c_xid) return false; - /* compare checksum of NFS data */ if (csum != rp->c_csum) { ++payload_misses; return false; } + /* Other discriminators */ + if (rqstp->rq_proc != rp->c_proc || + rqstp->rq_prot != rp->c_prot || + rqstp->rq_vers != rp->c_vers || + rqstp->rq_arg.len != rp->c_len || + !rpc_cmp_addr(svc_addr(rqstp), (struct sockaddr *)&rp->c_addr) || + rpc_get_port(svc_addr(rqstp)) != rpc_get_port((struct sockaddr *)&rp->c_addr)) + return false; + return true; } @@ -355,18 +365,14 @@ nfsd_cache_match(struct svc_rqst *rqstp, __wsum csum, struct svc_cacherep *rp) * NULL on failure. */ static struct svc_cacherep * -nfsd_cache_search(struct svc_rqst *rqstp, __wsum csum) +nfsd_cache_search(struct nfsd_drc_bucket *b, struct svc_rqst *rqstp, + __wsum csum) { struct svc_cacherep *rp, *ret = NULL; - struct hlist_head *rh; + struct list_head *rh = &b->lru_head; unsigned int entries = 0; - /* - * No point in byte swapping rq_xid since we're just using it to pick - * a hash bucket. - */ - rh = &cache_hash[hash_32((__force u32)rqstp->rq_xid, maskbits)]; - hlist_for_each_entry(rp, rh, c_hash) { + list_for_each_entry(rp, rh, c_lru) { ++entries; if (nfsd_cache_match(rqstp, csum, rp)) { ret = rp; @@ -377,11 +383,12 @@ nfsd_cache_search(struct svc_rqst *rqstp, __wsum csum) /* tally hash chain length stats */ if (entries > longest_chain) { longest_chain = entries; - longest_chain_cachesize = num_drc_entries; + longest_chain_cachesize = atomic_read(&num_drc_entries); } else if (entries == longest_chain) { /* prefer to keep the smallest cachesize possible here */ - longest_chain_cachesize = min(longest_chain_cachesize, - num_drc_entries); + longest_chain_cachesize = min_t(unsigned int, + longest_chain_cachesize, + atomic_read(&num_drc_entries)); } return ret; @@ -403,6 +410,8 @@ nfsd_cache_lookup(struct svc_rqst *rqstp) vers = rqstp->rq_vers, proc = rqstp->rq_proc; __wsum csum; + u32 hash = nfsd_cache_hash(xid); + struct nfsd_drc_bucket *b = &drc_hashtbl[hash]; unsigned long age; int type = rqstp->rq_cachetype; int rtn = RC_DOIT; @@ -420,16 +429,16 @@ nfsd_cache_lookup(struct svc_rqst *rqstp) * preallocate an entry. */ rp = nfsd_reply_cache_alloc(); - spin_lock(&cache_lock); + spin_lock(&b->cache_lock); if (likely(rp)) { - ++num_drc_entries; + atomic_inc(&num_drc_entries); drc_mem_usage += sizeof(*rp); } /* go ahead and prune the cache */ - prune_cache_entries(); + prune_bucket(b); - found = nfsd_cache_search(rqstp, csum); + found = nfsd_cache_search(b, rqstp, csum); if (found) { if (likely(rp)) nfsd_reply_cache_free_locked(rp); @@ -454,8 +463,7 @@ nfsd_cache_lookup(struct svc_rqst *rqstp) rp->c_len = rqstp->rq_arg.len; rp->c_csum = csum; - hash_refile(rp); - lru_put_end(rp); + lru_put_end(b, rp); /* release any buffer */ if (rp->c_type == RC_REPLBUFF) { @@ -465,14 +473,14 @@ nfsd_cache_lookup(struct svc_rqst *rqstp) } rp->c_type = RC_NOCACHE; out: - spin_unlock(&cache_lock); + spin_unlock(&b->cache_lock); return rtn; found_entry: nfsdstats.rchits++; /* We found a matching entry which is either in progress or done. */ age = jiffies - rp->c_timestamp; - lru_put_end(rp); + lru_put_end(b, rp); rtn = RC_DROPIT; /* Request being processed or excessive rexmits */ @@ -527,18 +535,23 @@ nfsd_cache_update(struct svc_rqst *rqstp, int cachetype, __be32 *statp) { struct svc_cacherep *rp = rqstp->rq_cacherep; struct kvec *resv = &rqstp->rq_res.head[0], *cachv; + u32 hash; + struct nfsd_drc_bucket *b; int len; size_t bufsize = 0; if (!rp) return; + hash = nfsd_cache_hash(rp->c_xid); + b = &drc_hashtbl[hash]; + len = resv->iov_len - ((char*)statp - (char*)resv->iov_base); len >>= 2; /* Don't cache excessive amounts of data and XDR failures */ if (!statp || len > (256 >> 2)) { - nfsd_reply_cache_free(rp); + nfsd_reply_cache_free(b, rp); return; } @@ -553,23 +566,23 @@ nfsd_cache_update(struct svc_rqst *rqstp, int cachetype, __be32 *statp) bufsize = len << 2; cachv->iov_base = kmalloc(bufsize, GFP_KERNEL); if (!cachv->iov_base) { - nfsd_reply_cache_free(rp); + nfsd_reply_cache_free(b, rp); return; } cachv->iov_len = bufsize; memcpy(cachv->iov_base, statp, bufsize); break; case RC_NOCACHE: - nfsd_reply_cache_free(rp); + nfsd_reply_cache_free(b, rp); return; } - spin_lock(&cache_lock); + spin_lock(&b->cache_lock); drc_mem_usage += bufsize; - lru_put_end(rp); + lru_put_end(b, rp); rp->c_secure = rqstp->rq_secure; rp->c_type = cachetype; rp->c_state = RC_DONE; - spin_unlock(&cache_lock); + spin_unlock(&b->cache_lock); return; } @@ -600,9 +613,9 @@ nfsd_cache_append(struct svc_rqst *rqstp, struct kvec *data) */ static int nfsd_reply_cache_stats_show(struct seq_file *m, void *v) { - spin_lock(&cache_lock); seq_printf(m, "max entries: %u\n", max_drc_entries); - seq_printf(m, "num entries: %u\n", num_drc_entries); + seq_printf(m, "num entries: %u\n", + atomic_read(&num_drc_entries)); seq_printf(m, "hash buckets: %u\n", 1 << maskbits); seq_printf(m, "mem usage: %u\n", drc_mem_usage); seq_printf(m, "cache hits: %u\n", nfsdstats.rchits); @@ -611,7 +624,6 @@ static int nfsd_reply_cache_stats_show(struct seq_file *m, void *v) seq_printf(m, "payload misses: %u\n", payload_misses); seq_printf(m, "longest chain len: %u\n", longest_chain); seq_printf(m, "cachesize at longest: %u\n", longest_chain_cachesize); - spin_unlock(&cache_lock); return 0; } diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 4e042105fb6e..ca73ca79a0ee 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -49,6 +49,7 @@ enum { NFSD_Leasetime, NFSD_Gracetime, NFSD_RecoveryDir, + NFSD_V4EndGrace, #endif }; @@ -68,6 +69,7 @@ static ssize_t write_maxconn(struct file *file, char *buf, size_t size); static ssize_t write_leasetime(struct file *file, char *buf, size_t size); static ssize_t write_gracetime(struct file *file, char *buf, size_t size); static ssize_t write_recoverydir(struct file *file, char *buf, size_t size); +static ssize_t write_v4_end_grace(struct file *file, char *buf, size_t size); #endif static ssize_t (*write_op[])(struct file *, char *, size_t) = { @@ -84,6 +86,7 @@ static ssize_t (*write_op[])(struct file *, char *, size_t) = { [NFSD_Leasetime] = write_leasetime, [NFSD_Gracetime] = write_gracetime, [NFSD_RecoveryDir] = write_recoverydir, + [NFSD_V4EndGrace] = write_v4_end_grace, #endif }; @@ -1077,6 +1080,47 @@ static ssize_t write_recoverydir(struct file *file, char *buf, size_t size) return rv; } +/** + * write_v4_end_grace - release grace period for nfsd's v4.x lock manager + * + * Input: + * buf: ignored + * size: zero + * OR + * + * Input: + * buf: any value + * size: non-zero length of C string in @buf + * Output: + * passed-in buffer filled with "Y" or "N" with a newline + * and NULL-terminated C string. This indicates whether + * the grace period has ended in the current net + * namespace. Return code is the size in bytes of the + * string. Writing a string that starts with 'Y', 'y', or + * '1' to the file will end the grace period for nfsd's v4 + * lock manager. + */ +static ssize_t write_v4_end_grace(struct file *file, char *buf, size_t size) +{ + struct net *net = file->f_dentry->d_sb->s_fs_info; + struct nfsd_net *nn = net_generic(net, nfsd_net_id); + + if (size > 0) { + switch(buf[0]) { + case 'Y': + case 'y': + case '1': + nfsd4_end_grace(nn); + break; + default: + return -EINVAL; + } + } + + return scnprintf(buf, SIMPLE_TRANSACTION_LIMIT, "%c\n", + nn->grace_ended ? 'Y' : 'N'); +} + #endif /*----------------------------------------------------------------------------*/ @@ -1110,6 +1154,7 @@ static int nfsd_fill_super(struct super_block * sb, void * data, int silent) [NFSD_Leasetime] = {"nfsv4leasetime", &transaction_ops, S_IWUSR|S_IRUSR}, [NFSD_Gracetime] = {"nfsv4gracetime", &transaction_ops, S_IWUSR|S_IRUSR}, [NFSD_RecoveryDir] = {"nfsv4recoverydir", &transaction_ops, S_IWUSR|S_IRUSR}, + [NFSD_V4EndGrace] = {"v4_end_grace", &transaction_ops, S_IWUSR|S_IRUGO}, #endif /* last one */ {""} }; diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h index 847daf37e566..747f3b95bd11 100644 --- a/fs/nfsd/nfsd.h +++ b/fs/nfsd/nfsd.h @@ -251,7 +251,7 @@ void nfsd_lockd_shutdown(void); #define nfserr_deleg_revoked cpu_to_be32(NFS4ERR_DELEG_REVOKED) #define nfserr_partner_notsupp cpu_to_be32(NFS4ERR_PARTNER_NOTSUPP) #define nfserr_partner_no_auth cpu_to_be32(NFS4ERR_PARTNER_NO_AUTH) -#define nfserr_metadata_notsupp cpu_to_be32(NFS4ERR_METADATA_NOTSUPP) +#define nfserr_union_notsupp cpu_to_be32(NFS4ERR_UNION_NOTSUPP) #define nfserr_offload_denied cpu_to_be32(NFS4ERR_OFFLOAD_DENIED) #define nfserr_wrong_lfs cpu_to_be32(NFS4ERR_WRONG_LFS) #define nfserr_badlabel cpu_to_be32(NFS4ERR_BADLABEL) diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c index e883a5868be6..88026fc6a981 100644 --- a/fs/nfsd/nfsfh.c +++ b/fs/nfsd/nfsfh.c @@ -209,8 +209,10 @@ static __be32 nfsd_set_fh_dentry(struct svc_rqst *rqstp, struct svc_fh *fhp) * fix that case easily. */ struct cred *new = prepare_creds(); - if (!new) - return nfserrno(-ENOMEM); + if (!new) { + error = nfserrno(-ENOMEM); + goto out; + } new->cap_effective = cap_raise_nfsd_set(new->cap_effective, new->cap_permitted); diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h index 4a89e00d7461..0a47c6a6b301 100644 --- a/fs/nfsd/state.h +++ b/fs/nfsd/state.h @@ -62,16 +62,21 @@ typedef struct { (s)->si_generation struct nfsd4_callback { - void *cb_op; struct nfs4_client *cb_clp; struct list_head cb_per_client; u32 cb_minorversion; struct rpc_message cb_msg; - const struct rpc_call_ops *cb_ops; + struct nfsd4_callback_ops *cb_ops; struct work_struct cb_work; bool cb_done; }; +struct nfsd4_callback_ops { + void (*prepare)(struct nfsd4_callback *); + int (*done)(struct nfsd4_callback *, struct rpc_task *); + void (*release)(struct nfsd4_callback *); +}; + /* * A core object that represents a "common" stateid. These are generally * embedded within the different (more specific) stateid objects and contain @@ -127,6 +132,9 @@ struct nfs4_delegation { struct nfsd4_callback dl_recall; }; +#define cb_to_delegation(cb) \ + container_of(cb, struct nfs4_delegation, dl_recall) + /* client delegation callback info */ struct nfs4_cb_conn { /* SETCLIENTID info */ @@ -306,6 +314,7 @@ struct nfs4_client { #define NFSD4_CLIENT_STABLE (2) /* client on stable storage */ #define NFSD4_CLIENT_RECLAIM_COMPLETE (3) /* reclaim_complete done */ #define NFSD4_CLIENT_CONFIRMED (4) /* client is confirmed */ +#define NFSD4_CLIENT_UPCALL_LOCK (5) /* upcall serialization */ #define NFSD4_CLIENT_CB_FLAG_MASK (1 << NFSD4_CLIENT_CB_UPDATE | \ 1 << NFSD4_CLIENT_CB_KILL) unsigned long cl_flags; @@ -517,6 +526,13 @@ static inline struct nfs4_ol_stateid *openlockstateid(struct nfs4_stid *s) #define RD_STATE 0x00000010 #define WR_STATE 0x00000020 +enum nfsd4_cb_op { + NFSPROC4_CLNT_CB_NULL = 0, + NFSPROC4_CLNT_CB_RECALL, + NFSPROC4_CLNT_CB_SEQUENCE, +}; + + struct nfsd4_compound_state; struct nfsd_net; @@ -531,12 +547,12 @@ extern struct nfs4_client_reclaim *nfsd4_find_reclaim_client(const char *recdir, extern __be32 nfs4_check_open_reclaim(clientid_t *clid, struct nfsd4_compound_state *cstate, struct nfsd_net *nn); extern int set_callback_cred(void); -void nfsd4_run_cb_null(struct work_struct *w); -void nfsd4_run_cb_recall(struct work_struct *w); extern void nfsd4_probe_callback(struct nfs4_client *clp); extern void nfsd4_probe_callback_sync(struct nfs4_client *clp); extern void nfsd4_change_callback(struct nfs4_client *clp, struct nfs4_cb_conn *); -extern void nfsd4_cb_recall(struct nfs4_delegation *dp); +extern void nfsd4_init_cb(struct nfsd4_callback *cb, struct nfs4_client *clp, + struct nfsd4_callback_ops *ops, enum nfsd4_cb_op op); +extern void nfsd4_run_cb(struct nfsd4_callback *cb); extern int nfsd4_create_callback_queue(void); extern void nfsd4_destroy_callback_queue(void); extern void nfsd4_shutdown_callback(struct nfs4_client *); @@ -545,13 +561,16 @@ extern struct nfs4_client_reclaim *nfs4_client_to_reclaim(const char *name, struct nfsd_net *nn); extern bool nfs4_has_reclaimed_state(const char *name, struct nfsd_net *nn); +/* grace period management */ +void nfsd4_end_grace(struct nfsd_net *nn); + /* nfs4recover operations */ extern int nfsd4_client_tracking_init(struct net *net); extern void nfsd4_client_tracking_exit(struct net *net); extern void nfsd4_client_record_create(struct nfs4_client *clp); extern void nfsd4_client_record_remove(struct nfs4_client *clp); extern int nfsd4_client_record_check(struct nfs4_client *clp); -extern void nfsd4_record_grace_done(struct nfsd_net *nn, time_t boot_time); +extern void nfsd4_record_grace_done(struct nfsd_net *nn); /* nfs fault injection functions */ #ifdef CONFIG_NFSD_FAULT_INJECTION diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index f501a9b5c9df..965cffd17a0c 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -445,6 +445,16 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap, if (err) goto out; size_change = 1; + + /* + * RFC5661, Section 18.30.4: + * Changing the size of a file with SETATTR indirectly + * changes the time_modify and change attributes. + * + * (and similar for the older RFCs) + */ + if (iap->ia_size != i_size_read(inode)) + iap->ia_valid |= ATTR_MTIME; } iap->ia_valid |= ATTR_CTIME; @@ -649,6 +659,7 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, umode_t type, { struct path path; struct inode *inode; + struct file *file; int flags = O_RDONLY|O_LARGEFILE; __be32 err; int host_err = 0; @@ -703,19 +714,25 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, umode_t type, else flags = O_WRONLY|O_LARGEFILE; } - *filp = dentry_open(&path, flags, current_cred()); - if (IS_ERR(*filp)) { - host_err = PTR_ERR(*filp); - *filp = NULL; - } else { - host_err = ima_file_check(*filp, may_flags); - if (may_flags & NFSD_MAY_64BIT_COOKIE) - (*filp)->f_mode |= FMODE_64BITHASH; - else - (*filp)->f_mode |= FMODE_32BITHASH; + file = dentry_open(&path, flags, current_cred()); + if (IS_ERR(file)) { + host_err = PTR_ERR(file); + goto out_nfserr; } + host_err = ima_file_check(file, may_flags); + if (host_err) { + nfsd_close(file); + goto out_nfserr; + } + + if (may_flags & NFSD_MAY_64BIT_COOKIE) + file->f_mode |= FMODE_64BITHASH; + else + file->f_mode |= FMODE_32BITHASH; + + *filp = file; out_nfserr: err = nfserrno(host_err); out: diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h index 465e7799742a..5720e9457f33 100644 --- a/fs/nfsd/xdr4.h +++ b/fs/nfsd/xdr4.h @@ -428,6 +428,17 @@ struct nfsd4_reclaim_complete { u32 rca_one_fs; }; +struct nfsd4_seek { + /* request */ + stateid_t seek_stateid; + loff_t seek_offset; + u32 seek_whence; + + /* response */ + u32 seek_eof; + loff_t seek_pos; +}; + struct nfsd4_op { int opnum; __be32 status; @@ -473,6 +484,9 @@ struct nfsd4_op { struct nfsd4_reclaim_complete reclaim_complete; struct nfsd4_test_stateid test_stateid; struct nfsd4_free_stateid free_stateid; + + /* NFSv4.2 */ + struct nfsd4_seek seek; } u; struct nfs4_replay * replay; }; diff --git a/fs/nilfs2/inode.c b/fs/nilfs2/inode.c index 6252b173a465..d071e7f23de2 100644 --- a/fs/nilfs2/inode.c +++ b/fs/nilfs2/inode.c @@ -24,6 +24,7 @@ #include <linux/buffer_head.h> #include <linux/gfp.h> #include <linux/mpage.h> +#include <linux/pagemap.h> #include <linux/writeback.h> #include <linux/aio.h> #include "nilfs.h" @@ -219,10 +220,10 @@ static int nilfs_writepage(struct page *page, struct writeback_control *wbc) static int nilfs_set_page_dirty(struct page *page) { + struct inode *inode = page->mapping->host; int ret = __set_page_dirty_nobuffers(page); if (page_has_buffers(page)) { - struct inode *inode = page->mapping->host; unsigned nr_dirty = 0; struct buffer_head *bh, *head; @@ -245,6 +246,10 @@ static int nilfs_set_page_dirty(struct page *page) if (nr_dirty) nilfs_set_file_dirty(inode, nr_dirty); + } else if (ret) { + unsigned nr_dirty = 1 << (PAGE_CACHE_SHIFT - inode->i_blkbits); + + nilfs_set_file_dirty(inode, nr_dirty); } return ret; } diff --git a/fs/notify/fdinfo.c b/fs/notify/fdinfo.c index 238a5930cb3c..9d7e2b9659cb 100644 --- a/fs/notify/fdinfo.c +++ b/fs/notify/fdinfo.c @@ -42,7 +42,7 @@ static int show_mark_fhandle(struct seq_file *m, struct inode *inode) { struct { struct file_handle handle; - u8 pad[64]; + u8 pad[MAX_HANDLE_SZ]; } f; int size, ret, i; @@ -50,7 +50,7 @@ static int show_mark_fhandle(struct seq_file *m, struct inode *inode) size = f.handle.handle_bytes >> 2; ret = exportfs_encode_inode_fh(inode, (struct fid *)f.handle.f_handle, &size, 0); - if ((ret == 255) || (ret == -ENOSPC)) { + if ((ret == FILEID_INVALID) || (ret < 0)) { WARN_ONCE(1, "Can't encode file handler for inotify: %d\n", ret); return 0; } diff --git a/fs/ocfs2/cluster/quorum.c b/fs/ocfs2/cluster/quorum.c index 1ec141e758d7..62e8ec619b4c 100644 --- a/fs/ocfs2/cluster/quorum.c +++ b/fs/ocfs2/cluster/quorum.c @@ -160,9 +160,18 @@ static void o2quo_make_decision(struct work_struct *work) } out: - spin_unlock(&qs->qs_lock); - if (fence) + if (fence) { + spin_unlock(&qs->qs_lock); o2quo_fence_self(); + } else { + mlog(ML_NOTICE, "not fencing this node, heartbeating: %d, " + "connected: %d, lowest: %d (%sreachable)\n", + qs->qs_heartbeating, qs->qs_connected, lowest_hb, + lowest_reachable ? "" : "un"); + spin_unlock(&qs->qs_lock); + + } + } static void o2quo_set_hold(struct o2quo_state *qs, u8 node) diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c index 681691bc233a..ea34952f9496 100644 --- a/fs/ocfs2/cluster/tcp.c +++ b/fs/ocfs2/cluster/tcp.c @@ -1480,6 +1480,14 @@ static int o2net_set_nodelay(struct socket *sock) return ret; } +static int o2net_set_usertimeout(struct socket *sock) +{ + int user_timeout = O2NET_TCP_USER_TIMEOUT; + + return kernel_setsockopt(sock, SOL_TCP, TCP_USER_TIMEOUT, + (char *)&user_timeout, sizeof(user_timeout)); +} + static void o2net_initialize_handshake(void) { o2net_hand->o2hb_heartbeat_timeout_ms = cpu_to_be32( @@ -1536,16 +1544,20 @@ static void o2net_idle_timer(unsigned long data) #endif printk(KERN_NOTICE "o2net: Connection to " SC_NODEF_FMT " has been " - "idle for %lu.%lu secs, shutting it down.\n", SC_NODEF_ARGS(sc), - msecs / 1000, msecs % 1000); + "idle for %lu.%lu secs.\n", + SC_NODEF_ARGS(sc), msecs / 1000, msecs % 1000); - /* - * Initialize the nn_timeout so that the next connection attempt - * will continue in o2net_start_connect. + /* idle timerout happen, don't shutdown the connection, but + * make fence decision. Maybe the connection can recover before + * the decision is made. */ atomic_set(&nn->nn_timeout, 1); + o2quo_conn_err(o2net_num_from_nn(nn)); + queue_delayed_work(o2net_wq, &nn->nn_still_up, + msecs_to_jiffies(O2NET_QUORUM_DELAY_MS)); + + o2net_sc_reset_idle_timer(sc); - o2net_sc_queue_work(sc, &sc->sc_shutdown_work); } static void o2net_sc_reset_idle_timer(struct o2net_sock_container *sc) @@ -1560,6 +1572,15 @@ static void o2net_sc_reset_idle_timer(struct o2net_sock_container *sc) static void o2net_sc_postpone_idle(struct o2net_sock_container *sc) { + struct o2net_node *nn = o2net_nn_from_num(sc->sc_node->nd_num); + + /* clear fence decision since the connection recover from timeout*/ + if (atomic_read(&nn->nn_timeout)) { + o2quo_conn_up(o2net_num_from_nn(nn)); + cancel_delayed_work(&nn->nn_still_up); + atomic_set(&nn->nn_timeout, 0); + } + /* Only push out an existing timer */ if (timer_pending(&sc->sc_idle_timeout)) o2net_sc_reset_idle_timer(sc); @@ -1650,6 +1671,12 @@ static void o2net_start_connect(struct work_struct *work) goto out; } + ret = o2net_set_usertimeout(sock); + if (ret) { + mlog(ML_ERROR, "set TCP_USER_TIMEOUT failed with %d\n", ret); + goto out; + } + o2net_register_callbacks(sc->sc_sock->sk, sc); spin_lock(&nn->nn_lock); @@ -1831,6 +1858,12 @@ static int o2net_accept_one(struct socket *sock, int *more) goto out; } + ret = o2net_set_usertimeout(new_sock); + if (ret) { + mlog(ML_ERROR, "set TCP_USER_TIMEOUT failed with %d\n", ret); + goto out; + } + slen = sizeof(sin); ret = new_sock->ops->getname(new_sock, (struct sockaddr *) &sin, &slen, 1); diff --git a/fs/ocfs2/cluster/tcp.h b/fs/ocfs2/cluster/tcp.h index 5bada2a69b50..c571e849fda4 100644 --- a/fs/ocfs2/cluster/tcp.h +++ b/fs/ocfs2/cluster/tcp.h @@ -63,6 +63,7 @@ typedef void (o2net_post_msg_handler_func)(int status, void *data, #define O2NET_KEEPALIVE_DELAY_MS_DEFAULT 2000 #define O2NET_IDLE_TIMEOUT_MS_DEFAULT 30000 +#define O2NET_TCP_USER_TIMEOUT 0x7fffffff /* TODO: figure this out.... */ static inline int o2net_link_down(int err, struct socket *sock) diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c index 3ec906ef5d9a..12ba682fc53c 100644 --- a/fs/ocfs2/dlm/dlmmaster.c +++ b/fs/ocfs2/dlm/dlmmaster.c @@ -655,12 +655,9 @@ void dlm_lockres_clear_refmap_bit(struct dlm_ctxt *dlm, clear_bit(bit, res->refmap); } - -void dlm_lockres_grab_inflight_ref(struct dlm_ctxt *dlm, +static void __dlm_lockres_grab_inflight_ref(struct dlm_ctxt *dlm, struct dlm_lock_resource *res) { - assert_spin_locked(&res->spinlock); - res->inflight_locks++; mlog(0, "%s: res %.*s, inflight++: now %u, %ps()\n", dlm->name, @@ -668,6 +665,13 @@ void dlm_lockres_grab_inflight_ref(struct dlm_ctxt *dlm, __builtin_return_address(0)); } +void dlm_lockres_grab_inflight_ref(struct dlm_ctxt *dlm, + struct dlm_lock_resource *res) +{ + assert_spin_locked(&res->spinlock); + __dlm_lockres_grab_inflight_ref(dlm, res); +} + void dlm_lockres_drop_inflight_ref(struct dlm_ctxt *dlm, struct dlm_lock_resource *res) { @@ -894,10 +898,8 @@ lookup: /* finally add the lockres to its hash bucket */ __dlm_insert_lockres(dlm, res); - /* Grab inflight ref to pin the resource */ - spin_lock(&res->spinlock); - dlm_lockres_grab_inflight_ref(dlm, res); - spin_unlock(&res->spinlock); + /* since this lockres is new it doesn't not require the spinlock */ + __dlm_lockres_grab_inflight_ref(dlm, res); /* get an extra ref on the mle in case this is a BLOCK * if so, the creator of the BLOCK may try to put the last @@ -2037,6 +2039,10 @@ kill: "and killing the other node now! This node is OK and can continue.\n"); __dlm_print_one_lock_resource(res); spin_unlock(&res->spinlock); + spin_lock(&dlm->master_lock); + if (mle) + __dlm_put_mle(mle); + spin_unlock(&dlm->master_lock); spin_unlock(&dlm->spinlock); *ret_data = (void *)res; dlm_put(dlm); diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c index 6f66b3751ace..53e6c40ed4c6 100644 --- a/fs/ocfs2/ioctl.c +++ b/fs/ocfs2/ioctl.c @@ -35,9 +35,8 @@ copy_to_user((typeof(a) __user *)b, &(a), sizeof(a)) /* - * This call is void because we are already reporting an error that may - * be -EFAULT. The error will be returned from the ioctl(2) call. It's - * just a best-effort to tell userspace that this request caused the error. + * This is just a best-effort to tell userspace that this request + * caused the error. */ static inline void o2info_set_request_error(struct ocfs2_info_request *kreq, struct ocfs2_info_request __user *req) @@ -146,136 +145,105 @@ bail: static int ocfs2_info_handle_blocksize(struct inode *inode, struct ocfs2_info_request __user *req) { - int status = -EFAULT; struct ocfs2_info_blocksize oib; if (o2info_from_user(oib, req)) - goto bail; + return -EFAULT; oib.ib_blocksize = inode->i_sb->s_blocksize; o2info_set_request_filled(&oib.ib_req); if (o2info_to_user(oib, req)) - goto bail; - - status = 0; -bail: - if (status) - o2info_set_request_error(&oib.ib_req, req); + return -EFAULT; - return status; + return 0; } static int ocfs2_info_handle_clustersize(struct inode *inode, struct ocfs2_info_request __user *req) { - int status = -EFAULT; struct ocfs2_info_clustersize oic; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); if (o2info_from_user(oic, req)) - goto bail; + return -EFAULT; oic.ic_clustersize = osb->s_clustersize; o2info_set_request_filled(&oic.ic_req); if (o2info_to_user(oic, req)) - goto bail; - - status = 0; -bail: - if (status) - o2info_set_request_error(&oic.ic_req, req); + return -EFAULT; - return status; + return 0; } static int ocfs2_info_handle_maxslots(struct inode *inode, struct ocfs2_info_request __user *req) { - int status = -EFAULT; struct ocfs2_info_maxslots oim; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); if (o2info_from_user(oim, req)) - goto bail; + return -EFAULT; oim.im_max_slots = osb->max_slots; o2info_set_request_filled(&oim.im_req); if (o2info_to_user(oim, req)) - goto bail; + return -EFAULT; - status = 0; -bail: - if (status) - o2info_set_request_error(&oim.im_req, req); - - return status; + return 0; } static int ocfs2_info_handle_label(struct inode *inode, struct ocfs2_info_request __user *req) { - int status = -EFAULT; struct ocfs2_info_label oil; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); if (o2info_from_user(oil, req)) - goto bail; + return -EFAULT; memcpy(oil.il_label, osb->vol_label, OCFS2_MAX_VOL_LABEL_LEN); o2info_set_request_filled(&oil.il_req); if (o2info_to_user(oil, req)) - goto bail; + return -EFAULT; - status = 0; -bail: - if (status) - o2info_set_request_error(&oil.il_req, req); - - return status; + return 0; } static int ocfs2_info_handle_uuid(struct inode *inode, struct ocfs2_info_request __user *req) { - int status = -EFAULT; struct ocfs2_info_uuid oiu; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); if (o2info_from_user(oiu, req)) - goto bail; + return -EFAULT; memcpy(oiu.iu_uuid_str, osb->uuid_str, OCFS2_TEXT_UUID_LEN + 1); o2info_set_request_filled(&oiu.iu_req); if (o2info_to_user(oiu, req)) - goto bail; - - status = 0; -bail: - if (status) - o2info_set_request_error(&oiu.iu_req, req); + return -EFAULT; - return status; + return 0; } static int ocfs2_info_handle_fs_features(struct inode *inode, struct ocfs2_info_request __user *req) { - int status = -EFAULT; struct ocfs2_info_fs_features oif; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); if (o2info_from_user(oif, req)) - goto bail; + return -EFAULT; oif.if_compat_features = osb->s_feature_compat; oif.if_incompat_features = osb->s_feature_incompat; @@ -284,39 +252,28 @@ static int ocfs2_info_handle_fs_features(struct inode *inode, o2info_set_request_filled(&oif.if_req); if (o2info_to_user(oif, req)) - goto bail; + return -EFAULT; - status = 0; -bail: - if (status) - o2info_set_request_error(&oif.if_req, req); - - return status; + return 0; } static int ocfs2_info_handle_journal_size(struct inode *inode, struct ocfs2_info_request __user *req) { - int status = -EFAULT; struct ocfs2_info_journal_size oij; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); if (o2info_from_user(oij, req)) - goto bail; + return -EFAULT; oij.ij_journal_size = i_size_read(osb->journal->j_inode); o2info_set_request_filled(&oij.ij_req); if (o2info_to_user(oij, req)) - goto bail; + return -EFAULT; - status = 0; -bail: - if (status) - o2info_set_request_error(&oij.ij_req, req); - - return status; + return 0; } static int ocfs2_info_scan_inode_alloc(struct ocfs2_super *osb, @@ -373,7 +330,7 @@ static int ocfs2_info_handle_freeinode(struct inode *inode, u32 i; u64 blkno = -1; char namebuf[40]; - int status = -EFAULT, type = INODE_ALLOC_SYSTEM_INODE; + int status, type = INODE_ALLOC_SYSTEM_INODE; struct ocfs2_info_freeinode *oifi = NULL; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); struct inode *inode_alloc = NULL; @@ -385,8 +342,10 @@ static int ocfs2_info_handle_freeinode(struct inode *inode, goto out_err; } - if (o2info_from_user(*oifi, req)) - goto bail; + if (o2info_from_user(*oifi, req)) { + status = -EFAULT; + goto out_free; + } oifi->ifi_slotnum = osb->max_slots; @@ -424,14 +383,16 @@ static int ocfs2_info_handle_freeinode(struct inode *inode, o2info_set_request_filled(&oifi->ifi_req); - if (o2info_to_user(*oifi, req)) - goto bail; + if (o2info_to_user(*oifi, req)) { + status = -EFAULT; + goto out_free; + } status = 0; bail: if (status) o2info_set_request_error(&oifi->ifi_req, req); - +out_free: kfree(oifi); out_err: return status; @@ -658,7 +619,7 @@ static int ocfs2_info_handle_freefrag(struct inode *inode, { u64 blkno = -1; char namebuf[40]; - int status = -EFAULT, type = GLOBAL_BITMAP_SYSTEM_INODE; + int status, type = GLOBAL_BITMAP_SYSTEM_INODE; struct ocfs2_info_freefrag *oiff; struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); @@ -671,8 +632,10 @@ static int ocfs2_info_handle_freefrag(struct inode *inode, goto out_err; } - if (o2info_from_user(*oiff, req)) - goto bail; + if (o2info_from_user(*oiff, req)) { + status = -EFAULT; + goto out_free; + } /* * chunksize from userspace should be power of 2. */ @@ -711,14 +674,14 @@ static int ocfs2_info_handle_freefrag(struct inode *inode, if (o2info_to_user(*oiff, req)) { status = -EFAULT; - goto bail; + goto out_free; } status = 0; bail: if (status) o2info_set_request_error(&oiff->iff_req, req); - +out_free: kfree(oiff); out_err: return status; @@ -727,23 +690,17 @@ out_err: static int ocfs2_info_handle_unknown(struct inode *inode, struct ocfs2_info_request __user *req) { - int status = -EFAULT; struct ocfs2_info_request oir; if (o2info_from_user(oir, req)) - goto bail; + return -EFAULT; o2info_clear_request_filled(&oir); if (o2info_to_user(oir, req)) - goto bail; + return -EFAULT; - status = 0; -bail: - if (status) - o2info_set_request_error(&oir, req); - - return status; + return 0; } /* diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c index ddb662b32447..4142546aedae 100644 --- a/fs/ocfs2/super.c +++ b/fs/ocfs2/super.c @@ -2532,6 +2532,7 @@ static void ocfs2_delete_osb(struct ocfs2_super *osb) kfree(osb->journal); kfree(osb->local_alloc_copy); kfree(osb->uuid_str); + kfree(osb->vol_label); ocfs2_put_dlm_debug(osb->osb_dlm_debug); memset(osb, 0, sizeof(struct ocfs2_super)); } diff --git a/fs/pnode.c b/fs/pnode.c index 302bf22c4a30..aae331a5d03b 100644 --- a/fs/pnode.c +++ b/fs/pnode.c @@ -381,6 +381,7 @@ static void __propagate_umount(struct mount *mnt) * other children */ if (child && list_empty(&child->mnt_mounts)) { + list_del_init(&child->mnt_child); hlist_del_init_rcu(&child->mnt_hash); hlist_add_before_rcu(&child->mnt_hash, &mnt->mnt_hash); } diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index dfc791c42d64..c34156888d70 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -931,23 +931,32 @@ static int pagemap_pte_hole(unsigned long start, unsigned long end, while (addr < end) { struct vm_area_struct *vma = find_vma(walk->mm, addr); pagemap_entry_t pme = make_pme(PM_NOT_PRESENT(pm->v2)); - unsigned long vm_end; + /* End of address space hole, which we mark as non-present. */ + unsigned long hole_end; - if (!vma) { - vm_end = end; - } else { - vm_end = min(end, vma->vm_end); - if (vma->vm_flags & VM_SOFTDIRTY) - pme.pme |= PM_STATUS2(pm->v2, __PM_SOFT_DIRTY); + if (vma) + hole_end = min(end, vma->vm_start); + else + hole_end = end; + + for (; addr < hole_end; addr += PAGE_SIZE) { + err = add_to_pagemap(addr, &pme, pm); + if (err) + goto out; } - for (; addr < vm_end; addr += PAGE_SIZE) { + if (!vma) + break; + + /* Addresses in the VMA. */ + if (vma->vm_flags & VM_SOFTDIRTY) + pme.pme |= PM_STATUS2(pm->v2, __PM_SOFT_DIRTY); + for (; addr < min(end, vma->vm_end); addr += PAGE_SIZE) { err = add_to_pagemap(addr, &pme, pm); if (err) goto out; } } - out: return err; } diff --git a/fs/stack.c b/fs/stack.c index 5b5388250e29..a54e33ed10f1 100644 --- a/fs/stack.c +++ b/fs/stack.c @@ -44,7 +44,7 @@ void fsstack_copy_inode_size(struct inode *dst, struct inode *src) * include/linux/fs.h). We don't necessarily hold i_mutex when this * is called, so take i_lock for that case. * - * And if CONFIG_LBADF (on 32-bit), continue our effort to keep the + * And if CONFIG_LBDAF (on 32-bit), continue our effort to keep the * two halves of i_blocks in sync despite SMP or PREEMPT: use i_lock * for that case too, and do both at once by combining the tests. * diff --git a/fs/sync.c b/fs/sync.c index b28d1dd10e8b..bdc729d80e5e 100644 --- a/fs/sync.c +++ b/fs/sync.c @@ -65,7 +65,7 @@ int sync_filesystem(struct super_block *sb) return ret; return __sync_filesystem(sb, 1); } -EXPORT_SYMBOL_GPL(sync_filesystem); +EXPORT_SYMBOL(sync_filesystem); static void sync_inodes_one_sb(struct super_block *sb, void *arg) { diff --git a/fs/udf/ialloc.c b/fs/udf/ialloc.c index 6eaf5edf1ea1..e77db621ec89 100644 --- a/fs/udf/ialloc.c +++ b/fs/udf/ialloc.c @@ -45,7 +45,7 @@ void udf_free_inode(struct inode *inode) udf_free_blocks(sb, NULL, &UDF_I(inode)->i_location, 0, 1); } -struct inode *udf_new_inode(struct inode *dir, umode_t mode, int *err) +struct inode *udf_new_inode(struct inode *dir, umode_t mode) { struct super_block *sb = dir->i_sb; struct udf_sb_info *sbi = UDF_SB(sb); @@ -55,14 +55,12 @@ struct inode *udf_new_inode(struct inode *dir, umode_t mode, int *err) struct udf_inode_info *iinfo; struct udf_inode_info *dinfo = UDF_I(dir); struct logicalVolIntegrityDescImpUse *lvidiu; + int err; inode = new_inode(sb); - if (!inode) { - *err = -ENOMEM; - return NULL; - } - *err = -ENOSPC; + if (!inode) + return ERR_PTR(-ENOMEM); iinfo = UDF_I(inode); if (UDF_QUERY_FLAG(inode->i_sb, UDF_FLAG_USE_EXTENDED_FE)) { @@ -80,21 +78,22 @@ struct inode *udf_new_inode(struct inode *dir, umode_t mode, int *err) } if (!iinfo->i_ext.i_data) { iput(inode); - *err = -ENOMEM; - return NULL; + return ERR_PTR(-ENOMEM); } + err = -ENOSPC; block = udf_new_block(dir->i_sb, NULL, dinfo->i_location.partitionReferenceNum, - start, err); - if (*err) { + start, &err); + if (err) { iput(inode); - return NULL; + return ERR_PTR(err); } lvidiu = udf_sb_lvidiu(sb); if (lvidiu) { iinfo->i_unique = lvid_get_unique_id(sb); + inode->i_generation = iinfo->i_unique; mutex_lock(&sbi->s_alloc_mutex); if (S_ISDIR(mode)) le32_add_cpu(&lvidiu->numDirs, 1); @@ -123,9 +122,12 @@ struct inode *udf_new_inode(struct inode *dir, umode_t mode, int *err) iinfo->i_alloc_type = ICBTAG_FLAG_AD_LONG; inode->i_mtime = inode->i_atime = inode->i_ctime = iinfo->i_crtime = current_fs_time(inode->i_sb); - insert_inode_hash(inode); + if (unlikely(insert_inode_locked(inode) < 0)) { + make_bad_inode(inode); + iput(inode); + return ERR_PTR(-EIO); + } mark_inode_dirty(inode); - *err = 0; return inode; } diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 236cd48184c2..08598843288f 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -51,7 +51,6 @@ MODULE_LICENSE("GPL"); static umode_t udf_convert_permissions(struct fileEntry *); static int udf_update_inode(struct inode *, int); -static void udf_fill_inode(struct inode *, struct buffer_head *); static int udf_sync_inode(struct inode *inode); static int udf_alloc_i_data(struct inode *inode, size_t size); static sector_t inode_getblk(struct inode *, sector_t, int *, int *); @@ -1271,12 +1270,33 @@ update_time: return 0; } -static void __udf_read_inode(struct inode *inode) +/* + * Maximum length of linked list formed by ICB hierarchy. The chosen number is + * arbitrary - just that we hopefully don't limit any real use of rewritten + * inode on write-once media but avoid looping for too long on corrupted media. + */ +#define UDF_MAX_ICB_NESTING 1024 + +static int udf_read_inode(struct inode *inode) { struct buffer_head *bh = NULL; struct fileEntry *fe; + struct extendedFileEntry *efe; uint16_t ident; struct udf_inode_info *iinfo = UDF_I(inode); + struct udf_sb_info *sbi = UDF_SB(inode->i_sb); + struct kernel_lb_addr *iloc = &iinfo->i_location; + unsigned int link_count; + unsigned int indirections = 0; + int ret = -EIO; + +reread: + if (iloc->logicalBlockNum >= + sbi->s_partmaps[iloc->partitionReferenceNum].s_partition_len) { + udf_debug("block=%d, partition=%d out of range\n", + iloc->logicalBlockNum, iloc->partitionReferenceNum); + return -EIO; + } /* * Set defaults, but the inode is still incomplete! @@ -1290,78 +1310,54 @@ static void __udf_read_inode(struct inode *inode) * i_nlink = 1 * i_op = NULL; */ - bh = udf_read_ptagged(inode->i_sb, &iinfo->i_location, 0, &ident); + bh = udf_read_ptagged(inode->i_sb, iloc, 0, &ident); if (!bh) { udf_err(inode->i_sb, "(ino %ld) failed !bh\n", inode->i_ino); - make_bad_inode(inode); - return; + return -EIO; } if (ident != TAG_IDENT_FE && ident != TAG_IDENT_EFE && ident != TAG_IDENT_USE) { udf_err(inode->i_sb, "(ino %ld) failed ident=%d\n", inode->i_ino, ident); - brelse(bh); - make_bad_inode(inode); - return; + goto out; } fe = (struct fileEntry *)bh->b_data; + efe = (struct extendedFileEntry *)bh->b_data; if (fe->icbTag.strategyType == cpu_to_le16(4096)) { struct buffer_head *ibh; - ibh = udf_read_ptagged(inode->i_sb, &iinfo->i_location, 1, - &ident); + ibh = udf_read_ptagged(inode->i_sb, iloc, 1, &ident); if (ident == TAG_IDENT_IE && ibh) { - struct buffer_head *nbh = NULL; struct kernel_lb_addr loc; struct indirectEntry *ie; ie = (struct indirectEntry *)ibh->b_data; loc = lelb_to_cpu(ie->indirectICB.extLocation); - if (ie->indirectICB.extLength && - (nbh = udf_read_ptagged(inode->i_sb, &loc, 0, - &ident))) { - if (ident == TAG_IDENT_FE || - ident == TAG_IDENT_EFE) { - memcpy(&iinfo->i_location, - &loc, - sizeof(struct kernel_lb_addr)); - brelse(bh); - brelse(ibh); - brelse(nbh); - __udf_read_inode(inode); - return; + if (ie->indirectICB.extLength) { + brelse(ibh); + memcpy(&iinfo->i_location, &loc, + sizeof(struct kernel_lb_addr)); + if (++indirections > UDF_MAX_ICB_NESTING) { + udf_err(inode->i_sb, + "too many ICBs in ICB hierarchy" + " (max %d supported)\n", + UDF_MAX_ICB_NESTING); + goto out; } - brelse(nbh); + brelse(bh); + goto reread; } } brelse(ibh); } else if (fe->icbTag.strategyType != cpu_to_le16(4)) { udf_err(inode->i_sb, "unsupported strategy type: %d\n", le16_to_cpu(fe->icbTag.strategyType)); - brelse(bh); - make_bad_inode(inode); - return; + goto out; } - udf_fill_inode(inode, bh); - - brelse(bh); -} - -static void udf_fill_inode(struct inode *inode, struct buffer_head *bh) -{ - struct fileEntry *fe; - struct extendedFileEntry *efe; - struct udf_sb_info *sbi = UDF_SB(inode->i_sb); - struct udf_inode_info *iinfo = UDF_I(inode); - unsigned int link_count; - - fe = (struct fileEntry *)bh->b_data; - efe = (struct extendedFileEntry *)bh->b_data; - if (fe->icbTag.strategyType == cpu_to_le16(4)) iinfo->i_strat4096 = 0; else /* if (fe->icbTag.strategyType == cpu_to_le16(4096)) */ @@ -1378,11 +1374,10 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh) if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_EFE)) { iinfo->i_efe = 1; iinfo->i_use = 0; - if (udf_alloc_i_data(inode, inode->i_sb->s_blocksize - - sizeof(struct extendedFileEntry))) { - make_bad_inode(inode); - return; - } + ret = udf_alloc_i_data(inode, inode->i_sb->s_blocksize - + sizeof(struct extendedFileEntry)); + if (ret) + goto out; memcpy(iinfo->i_ext.i_data, bh->b_data + sizeof(struct extendedFileEntry), inode->i_sb->s_blocksize - @@ -1390,11 +1385,10 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh) } else if (fe->descTag.tagIdent == cpu_to_le16(TAG_IDENT_FE)) { iinfo->i_efe = 0; iinfo->i_use = 0; - if (udf_alloc_i_data(inode, inode->i_sb->s_blocksize - - sizeof(struct fileEntry))) { - make_bad_inode(inode); - return; - } + ret = udf_alloc_i_data(inode, inode->i_sb->s_blocksize - + sizeof(struct fileEntry)); + if (ret) + goto out; memcpy(iinfo->i_ext.i_data, bh->b_data + sizeof(struct fileEntry), inode->i_sb->s_blocksize - sizeof(struct fileEntry)); @@ -1404,18 +1398,18 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh) iinfo->i_lenAlloc = le32_to_cpu( ((struct unallocSpaceEntry *)bh->b_data)-> lengthAllocDescs); - if (udf_alloc_i_data(inode, inode->i_sb->s_blocksize - - sizeof(struct unallocSpaceEntry))) { - make_bad_inode(inode); - return; - } + ret = udf_alloc_i_data(inode, inode->i_sb->s_blocksize - + sizeof(struct unallocSpaceEntry)); + if (ret) + goto out; memcpy(iinfo->i_ext.i_data, bh->b_data + sizeof(struct unallocSpaceEntry), inode->i_sb->s_blocksize - sizeof(struct unallocSpaceEntry)); - return; + return 0; } + ret = -EIO; read_lock(&sbi->s_cred_lock); i_uid_write(inode, le32_to_cpu(fe->uid)); if (!uid_valid(inode->i_uid) || @@ -1441,8 +1435,10 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh) read_unlock(&sbi->s_cred_lock); link_count = le16_to_cpu(fe->fileLinkCount); - if (!link_count) - link_count = 1; + if (!link_count) { + ret = -ESTALE; + goto out; + } set_nlink(inode, link_count); inode->i_size = le64_to_cpu(fe->informationLength); @@ -1488,6 +1484,7 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh) iinfo->i_lenAlloc = le32_to_cpu(efe->lengthAllocDescs); iinfo->i_checkpoint = le32_to_cpu(efe->checkpoint); } + inode->i_generation = iinfo->i_unique; switch (fe->icbTag.fileType) { case ICBTAG_FILE_TYPE_DIRECTORY: @@ -1537,8 +1534,7 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh) default: udf_err(inode->i_sb, "(ino %ld) failed unknown file type=%d\n", inode->i_ino, fe->icbTag.fileType); - make_bad_inode(inode); - return; + goto out; } if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { struct deviceSpec *dsea = @@ -1549,8 +1545,12 @@ static void udf_fill_inode(struct inode *inode, struct buffer_head *bh) le32_to_cpu(dsea->minorDeviceIdent))); /* Developer ID ??? */ } else - make_bad_inode(inode); + goto out; } + ret = 0; +out: + brelse(bh); + return ret; } static int udf_alloc_i_data(struct inode *inode, size_t size) @@ -1664,7 +1664,7 @@ static int udf_update_inode(struct inode *inode, int do_sync) FE_PERM_U_DELETE | FE_PERM_U_CHATTR)); fe->permissions = cpu_to_le32(udfperms); - if (S_ISDIR(inode->i_mode)) + if (S_ISDIR(inode->i_mode) && inode->i_nlink > 0) fe->fileLinkCount = cpu_to_le16(inode->i_nlink - 1); else fe->fileLinkCount = cpu_to_le16(inode->i_nlink); @@ -1830,32 +1830,23 @@ struct inode *udf_iget(struct super_block *sb, struct kernel_lb_addr *ino) { unsigned long block = udf_get_lb_pblock(sb, ino, 0); struct inode *inode = iget_locked(sb, block); + int err; if (!inode) - return NULL; - - if (inode->i_state & I_NEW) { - memcpy(&UDF_I(inode)->i_location, ino, sizeof(struct kernel_lb_addr)); - __udf_read_inode(inode); - unlock_new_inode(inode); - } + return ERR_PTR(-ENOMEM); - if (is_bad_inode(inode)) - goto out_iput; + if (!(inode->i_state & I_NEW)) + return inode; - if (ino->logicalBlockNum >= UDF_SB(sb)-> - s_partmaps[ino->partitionReferenceNum].s_partition_len) { - udf_debug("block=%d, partition=%d out of range\n", - ino->logicalBlockNum, ino->partitionReferenceNum); - make_bad_inode(inode); - goto out_iput; + memcpy(&UDF_I(inode)->i_location, ino, sizeof(struct kernel_lb_addr)); + err = udf_read_inode(inode); + if (err < 0) { + iget_failed(inode); + return ERR_PTR(err); } + unlock_new_inode(inode); return inode; - - out_iput: - iput(inode); - return NULL; } int udf_add_aext(struct inode *inode, struct extent_position *epos, diff --git a/fs/udf/namei.c b/fs/udf/namei.c index 83a06001742b..c12e260fd6c4 100644 --- a/fs/udf/namei.c +++ b/fs/udf/namei.c @@ -270,9 +270,8 @@ static struct dentry *udf_lookup(struct inode *dir, struct dentry *dentry, NULL, 0), }; inode = udf_iget(dir->i_sb, lb); - if (!inode) { - return ERR_PTR(-EACCES); - } + if (IS_ERR(inode)) + return inode; } else #endif /* UDF_RECOVERY */ @@ -285,9 +284,8 @@ static struct dentry *udf_lookup(struct inode *dir, struct dentry *dentry, loc = lelb_to_cpu(cfi.icb.extLocation); inode = udf_iget(dir->i_sb, &loc); - if (!inode) { - return ERR_PTR(-EACCES); - } + if (IS_ERR(inode)) + return ERR_CAST(inode); } return d_splice_alias(inode, dentry); @@ -550,32 +548,18 @@ static int udf_delete_entry(struct inode *inode, struct fileIdentDesc *fi, return udf_write_fi(inode, cfi, fi, fibh, NULL, NULL); } -static int udf_create(struct inode *dir, struct dentry *dentry, umode_t mode, - bool excl) +static int udf_add_nondir(struct dentry *dentry, struct inode *inode) { + struct udf_inode_info *iinfo = UDF_I(inode); + struct inode *dir = dentry->d_parent->d_inode; struct udf_fileident_bh fibh; - struct inode *inode; struct fileIdentDesc cfi, *fi; int err; - struct udf_inode_info *iinfo; - - inode = udf_new_inode(dir, mode, &err); - if (!inode) { - return err; - } - - iinfo = UDF_I(inode); - if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) - inode->i_data.a_ops = &udf_adinicb_aops; - else - inode->i_data.a_ops = &udf_aops; - inode->i_op = &udf_file_inode_operations; - inode->i_fop = &udf_file_operations; - mark_inode_dirty(inode); fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err); - if (!fi) { + if (unlikely(!fi)) { inode_dec_link_count(inode); + unlock_new_inode(inode); iput(inode); return err; } @@ -589,23 +573,21 @@ static int udf_create(struct inode *dir, struct dentry *dentry, umode_t mode, if (fibh.sbh != fibh.ebh) brelse(fibh.ebh); brelse(fibh.sbh); + unlock_new_inode(inode); d_instantiate(dentry, inode); return 0; } -static int udf_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) +static int udf_create(struct inode *dir, struct dentry *dentry, umode_t mode, + bool excl) { - struct inode *inode; - struct udf_inode_info *iinfo; - int err; + struct inode *inode = udf_new_inode(dir, mode); - inode = udf_new_inode(dir, mode, &err); - if (!inode) - return err; + if (IS_ERR(inode)) + return PTR_ERR(inode); - iinfo = UDF_I(inode); - if (iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) + if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) inode->i_data.a_ops = &udf_adinicb_aops; else inode->i_data.a_ops = &udf_aops; @@ -613,7 +595,25 @@ static int udf_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) inode->i_fop = &udf_file_operations; mark_inode_dirty(inode); + return udf_add_nondir(dentry, inode); +} + +static int udf_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode) +{ + struct inode *inode = udf_new_inode(dir, mode); + + if (IS_ERR(inode)) + return PTR_ERR(inode); + + if (UDF_I(inode)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) + inode->i_data.a_ops = &udf_adinicb_aops; + else + inode->i_data.a_ops = &udf_aops; + inode->i_op = &udf_file_inode_operations; + inode->i_fop = &udf_file_operations; + mark_inode_dirty(inode); d_tmpfile(dentry, inode); + unlock_new_inode(inode); return 0; } @@ -621,44 +621,16 @@ static int udf_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev) { struct inode *inode; - struct udf_fileident_bh fibh; - struct fileIdentDesc cfi, *fi; - int err; - struct udf_inode_info *iinfo; if (!old_valid_dev(rdev)) return -EINVAL; - err = -EIO; - inode = udf_new_inode(dir, mode, &err); - if (!inode) - goto out; + inode = udf_new_inode(dir, mode); + if (IS_ERR(inode)) + return PTR_ERR(inode); - iinfo = UDF_I(inode); init_special_inode(inode, mode, rdev); - fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err); - if (!fi) { - inode_dec_link_count(inode); - iput(inode); - return err; - } - cfi.icb.extLength = cpu_to_le32(inode->i_sb->s_blocksize); - cfi.icb.extLocation = cpu_to_lelb(iinfo->i_location); - *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse = - cpu_to_le32(iinfo->i_unique & 0x00000000FFFFFFFFUL); - udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL); - if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) - mark_inode_dirty(dir); - mark_inode_dirty(inode); - - if (fibh.sbh != fibh.ebh) - brelse(fibh.ebh); - brelse(fibh.sbh); - d_instantiate(dentry, inode); - err = 0; - -out: - return err; + return udf_add_nondir(dentry, inode); } static int udf_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) @@ -670,10 +642,9 @@ static int udf_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) struct udf_inode_info *dinfo = UDF_I(dir); struct udf_inode_info *iinfo; - err = -EIO; - inode = udf_new_inode(dir, S_IFDIR | mode, &err); - if (!inode) - goto out; + inode = udf_new_inode(dir, S_IFDIR | mode); + if (IS_ERR(inode)) + return PTR_ERR(inode); iinfo = UDF_I(inode); inode->i_op = &udf_dir_inode_operations; @@ -681,6 +652,7 @@ static int udf_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) fi = udf_add_entry(inode, NULL, &fibh, &cfi, &err); if (!fi) { inode_dec_link_count(inode); + unlock_new_inode(inode); iput(inode); goto out; } @@ -699,6 +671,7 @@ static int udf_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) if (!fi) { clear_nlink(inode); mark_inode_dirty(inode); + unlock_new_inode(inode); iput(inode); goto out; } @@ -710,6 +683,7 @@ static int udf_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL); inc_nlink(dir); mark_inode_dirty(dir); + unlock_new_inode(inode); d_instantiate(dentry, inode); if (fibh.sbh != fibh.ebh) brelse(fibh.ebh); @@ -876,14 +850,11 @@ out: static int udf_symlink(struct inode *dir, struct dentry *dentry, const char *symname) { - struct inode *inode; + struct inode *inode = udf_new_inode(dir, S_IFLNK | S_IRWXUGO); struct pathComponent *pc; const char *compstart; - struct udf_fileident_bh fibh; struct extent_position epos = {}; int eoffset, elen = 0; - struct fileIdentDesc *fi; - struct fileIdentDesc cfi; uint8_t *ea; int err; int block; @@ -892,9 +863,8 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry, struct udf_inode_info *iinfo; struct super_block *sb = dir->i_sb; - inode = udf_new_inode(dir, S_IFLNK | S_IRWXUGO, &err); - if (!inode) - goto out; + if (IS_ERR(inode)) + return PTR_ERR(inode); iinfo = UDF_I(inode); down_write(&iinfo->i_data_sem); @@ -1012,32 +982,15 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry, mark_inode_dirty(inode); up_write(&iinfo->i_data_sem); - fi = udf_add_entry(dir, dentry, &fibh, &cfi, &err); - if (!fi) - goto out_fail; - cfi.icb.extLength = cpu_to_le32(sb->s_blocksize); - cfi.icb.extLocation = cpu_to_lelb(iinfo->i_location); - if (UDF_SB(inode->i_sb)->s_lvid_bh) { - *(__le32 *)((struct allocDescImpUse *)cfi.icb.impUse)->impUse = - cpu_to_le32(lvid_get_unique_id(sb)); - } - udf_write_fi(dir, &cfi, fi, &fibh, NULL, NULL); - if (UDF_I(dir)->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB) - mark_inode_dirty(dir); - if (fibh.sbh != fibh.ebh) - brelse(fibh.ebh); - brelse(fibh.sbh); - d_instantiate(dentry, inode); - err = 0; - + err = udf_add_nondir(dentry, inode); out: kfree(name); return err; out_no_entry: up_write(&iinfo->i_data_sem); -out_fail: inode_dec_link_count(inode); + unlock_new_inode(inode); iput(inode); goto out; } @@ -1222,7 +1175,7 @@ static struct dentry *udf_get_parent(struct dentry *child) struct udf_fileident_bh fibh; if (!udf_find_entry(child->d_inode, &dotdot, &fibh, &cfi)) - goto out_unlock; + return ERR_PTR(-EACCES); if (fibh.sbh != fibh.ebh) brelse(fibh.ebh); @@ -1230,12 +1183,10 @@ static struct dentry *udf_get_parent(struct dentry *child) tloc = lelb_to_cpu(cfi.icb.extLocation); inode = udf_iget(child->d_inode->i_sb, &tloc); - if (!inode) - goto out_unlock; + if (IS_ERR(inode)) + return ERR_CAST(inode); return d_obtain_alias(inode); -out_unlock: - return ERR_PTR(-EACCES); } @@ -1252,8 +1203,8 @@ static struct dentry *udf_nfs_get_inode(struct super_block *sb, u32 block, loc.partitionReferenceNum = partref; inode = udf_iget(sb, &loc); - if (inode == NULL) - return ERR_PTR(-ENOMEM); + if (IS_ERR(inode)) + return ERR_CAST(inode); if (generation && inode->i_generation != generation) { iput(inode); diff --git a/fs/udf/super.c b/fs/udf/super.c index 813da94d447b..5401fc33f5cc 100644 --- a/fs/udf/super.c +++ b/fs/udf/super.c @@ -961,12 +961,14 @@ struct inode *udf_find_metadata_inode_efe(struct super_block *sb, metadata_fe = udf_iget(sb, &addr); - if (metadata_fe == NULL) + if (IS_ERR(metadata_fe)) { udf_warn(sb, "metadata inode efe not found\n"); - else if (UDF_I(metadata_fe)->i_alloc_type != ICBTAG_FLAG_AD_SHORT) { + return metadata_fe; + } + if (UDF_I(metadata_fe)->i_alloc_type != ICBTAG_FLAG_AD_SHORT) { udf_warn(sb, "metadata inode efe does not have short allocation descriptors!\n"); iput(metadata_fe); - metadata_fe = NULL; + return ERR_PTR(-EIO); } return metadata_fe; @@ -978,6 +980,7 @@ static int udf_load_metadata_files(struct super_block *sb, int partition) struct udf_part_map *map; struct udf_meta_data *mdata; struct kernel_lb_addr addr; + struct inode *fe; map = &sbi->s_partmaps[partition]; mdata = &map->s_type_specific.s_metadata; @@ -986,22 +989,24 @@ static int udf_load_metadata_files(struct super_block *sb, int partition) udf_debug("Metadata file location: block = %d part = %d\n", mdata->s_meta_file_loc, map->s_partition_num); - mdata->s_metadata_fe = udf_find_metadata_inode_efe(sb, - mdata->s_meta_file_loc, map->s_partition_num); - - if (mdata->s_metadata_fe == NULL) { + fe = udf_find_metadata_inode_efe(sb, mdata->s_meta_file_loc, + map->s_partition_num); + if (IS_ERR(fe)) { /* mirror file entry */ udf_debug("Mirror metadata file location: block = %d part = %d\n", mdata->s_mirror_file_loc, map->s_partition_num); - mdata->s_mirror_fe = udf_find_metadata_inode_efe(sb, - mdata->s_mirror_file_loc, map->s_partition_num); + fe = udf_find_metadata_inode_efe(sb, mdata->s_mirror_file_loc, + map->s_partition_num); - if (mdata->s_mirror_fe == NULL) { + if (IS_ERR(fe)) { udf_err(sb, "Both metadata and mirror metadata inode efe can not found\n"); - return -EIO; + return PTR_ERR(fe); } - } + mdata->s_mirror_fe = fe; + } else + mdata->s_metadata_fe = fe; + /* * bitmap file entry @@ -1015,15 +1020,16 @@ static int udf_load_metadata_files(struct super_block *sb, int partition) udf_debug("Bitmap file location: block = %d part = %d\n", addr.logicalBlockNum, addr.partitionReferenceNum); - mdata->s_bitmap_fe = udf_iget(sb, &addr); - if (mdata->s_bitmap_fe == NULL) { + fe = udf_iget(sb, &addr); + if (IS_ERR(fe)) { if (sb->s_flags & MS_RDONLY) udf_warn(sb, "bitmap inode efe not found but it's ok since the disc is mounted read-only\n"); else { udf_err(sb, "bitmap inode efe not found and attempted read-write mount\n"); - return -EIO; + return PTR_ERR(fe); } - } + } else + mdata->s_bitmap_fe = fe; } udf_debug("udf_load_metadata_files Ok\n"); @@ -1111,13 +1117,15 @@ static int udf_fill_partdesc_info(struct super_block *sb, phd->unallocSpaceTable.extPosition), .partitionReferenceNum = p_index, }; + struct inode *inode; - map->s_uspace.s_table = udf_iget(sb, &loc); - if (!map->s_uspace.s_table) { + inode = udf_iget(sb, &loc); + if (IS_ERR(inode)) { udf_debug("cannot load unallocSpaceTable (part %d)\n", p_index); - return -EIO; + return PTR_ERR(inode); } + map->s_uspace.s_table = inode; map->s_partition_flags |= UDF_PART_FLAG_UNALLOC_TABLE; udf_debug("unallocSpaceTable (part %d) @ %ld\n", p_index, map->s_uspace.s_table->i_ino); @@ -1144,14 +1152,15 @@ static int udf_fill_partdesc_info(struct super_block *sb, phd->freedSpaceTable.extPosition), .partitionReferenceNum = p_index, }; + struct inode *inode; - map->s_fspace.s_table = udf_iget(sb, &loc); - if (!map->s_fspace.s_table) { + inode = udf_iget(sb, &loc); + if (IS_ERR(inode)) { udf_debug("cannot load freedSpaceTable (part %d)\n", p_index); - return -EIO; + return PTR_ERR(inode); } - + map->s_fspace.s_table = inode; map->s_partition_flags |= UDF_PART_FLAG_FREED_TABLE; udf_debug("freedSpaceTable (part %d) @ %ld\n", p_index, map->s_fspace.s_table->i_ino); @@ -1178,6 +1187,7 @@ static void udf_find_vat_block(struct super_block *sb, int p_index, struct udf_part_map *map = &sbi->s_partmaps[p_index]; sector_t vat_block; struct kernel_lb_addr ino; + struct inode *inode; /* * VAT file entry is in the last recorded block. Some broken disks have @@ -1186,10 +1196,13 @@ static void udf_find_vat_block(struct super_block *sb, int p_index, ino.partitionReferenceNum = type1_index; for (vat_block = start_block; vat_block >= map->s_partition_root && - vat_block >= start_block - 3 && - !sbi->s_vat_inode; vat_block--) { + vat_block >= start_block - 3; vat_block--) { ino.logicalBlockNum = vat_block - map->s_partition_root; - sbi->s_vat_inode = udf_iget(sb, &ino); + inode = udf_iget(sb, &ino); + if (!IS_ERR(inode)) { + sbi->s_vat_inode = inode; + break; + } } } @@ -2205,10 +2218,10 @@ static int udf_fill_super(struct super_block *sb, void *options, int silent) /* assign inodes by physical block number */ /* perhaps it's not extensible enough, but for now ... */ inode = udf_iget(sb, &rootdir); - if (!inode) { + if (IS_ERR(inode)) { udf_err(sb, "Error in udf_iget, block=%d, partition=%d\n", rootdir.logicalBlockNum, rootdir.partitionReferenceNum); - ret = -EIO; + ret = PTR_ERR(inode); goto error_out; } diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h index be7dabbbcb49..742557be9936 100644 --- a/fs/udf/udfdecl.h +++ b/fs/udf/udfdecl.h @@ -143,7 +143,6 @@ extern int udf_expand_file_adinicb(struct inode *); extern struct buffer_head *udf_expand_dir_adinicb(struct inode *, int *, int *); extern struct buffer_head *udf_bread(struct inode *, int, int, int *); extern int udf_setsize(struct inode *, loff_t); -extern void udf_read_inode(struct inode *); extern void udf_evict_inode(struct inode *); extern int udf_write_inode(struct inode *, struct writeback_control *wbc); extern long udf_block_map(struct inode *, sector_t); @@ -209,7 +208,7 @@ extern int udf_CS0toUTF8(struct ustr *, const struct ustr *); /* ialloc.c */ extern void udf_free_inode(struct inode *); -extern struct inode *udf_new_inode(struct inode *, umode_t, int *); +extern struct inode *udf_new_inode(struct inode *, umode_t); /* truncate.c */ extern void udf_truncate_tail_extent(struct inode *); diff --git a/fs/ufs/ialloc.c b/fs/ufs/ialloc.c index a9cc75ffa925..7caa01652888 100644 --- a/fs/ufs/ialloc.c +++ b/fs/ufs/ialloc.c @@ -298,7 +298,10 @@ cg_found: ufsi->i_oeftflag = 0; ufsi->i_dir_start_lookup = 0; memset(&ufsi->i_u1, 0, sizeof(ufsi->i_u1)); - insert_inode_hash(inode); + if (insert_inode_locked(inode) < 0) { + err = -EIO; + goto failed; + } mark_inode_dirty(inode); if (uspi->fs_magic == UFS2_MAGIC) { @@ -337,6 +340,7 @@ cg_found: fail_remove_inode: unlock_ufs(sb); clear_nlink(inode); + unlock_new_inode(inode); iput(inode); UFSD("EXIT (FAILED): err %d\n", err); return ERR_PTR(err); diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c index 7c580c97990e..be7d42c7d938 100644 --- a/fs/ufs/inode.c +++ b/fs/ufs/inode.c @@ -902,9 +902,6 @@ void ufs_evict_inode(struct inode * inode) invalidate_inode_buffers(inode); clear_inode(inode); - if (want_delete) { - lock_ufs(inode->i_sb); - ufs_free_inode (inode); - unlock_ufs(inode->i_sb); - } + if (want_delete) + ufs_free_inode(inode); } diff --git a/fs/ufs/namei.c b/fs/ufs/namei.c index 90d74b8f8eba..fd65deb4b5f0 100644 --- a/fs/ufs/namei.c +++ b/fs/ufs/namei.c @@ -38,10 +38,12 @@ static inline int ufs_add_nondir(struct dentry *dentry, struct inode *inode) { int err = ufs_add_link(dentry, inode); if (!err) { + unlock_new_inode(inode); d_instantiate(dentry, inode); return 0; } inode_dec_link_count(inode); + unlock_new_inode(inode); iput(inode); return err; } @@ -126,12 +128,12 @@ static int ufs_symlink (struct inode * dir, struct dentry * dentry, if (l > sb->s_blocksize) goto out_notlocked; - lock_ufs(dir->i_sb); inode = ufs_new_inode(dir, S_IFLNK | S_IRWXUGO); err = PTR_ERR(inode); if (IS_ERR(inode)) - goto out; + goto out_notlocked; + lock_ufs(dir->i_sb); if (l > UFS_SB(sb)->s_uspi->s_maxsymlinklen) { /* slow symlink */ inode->i_op = &ufs_symlink_inode_operations; @@ -155,6 +157,7 @@ out_notlocked: out_fail: inode_dec_link_count(inode); + unlock_new_inode(inode); iput(inode); goto out; } @@ -181,13 +184,9 @@ static int ufs_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode) struct inode * inode; int err; - lock_ufs(dir->i_sb); - inode_inc_link_count(dir); - inode = ufs_new_inode(dir, S_IFDIR|mode); - err = PTR_ERR(inode); if (IS_ERR(inode)) - goto out_dir; + return PTR_ERR(inode); inode->i_op = &ufs_dir_inode_operations; inode->i_fop = &ufs_dir_operations; @@ -195,6 +194,9 @@ static int ufs_mkdir(struct inode * dir, struct dentry * dentry, umode_t mode) inode_inc_link_count(inode); + lock_ufs(dir->i_sb); + inode_inc_link_count(dir); + err = ufs_make_empty(inode, dir); if (err) goto out_fail; @@ -211,8 +213,8 @@ out: out_fail: inode_dec_link_count(inode); inode_dec_link_count(inode); + unlock_new_inode(inode); iput (inode); -out_dir: inode_dec_link_count(dir); unlock_ufs(dir->i_sb); goto out; diff --git a/fs/xfs/libxfs/xfs_bmap.c b/fs/xfs/libxfs/xfs_bmap.c index de2d26d32844..86df952d3e24 100644 --- a/fs/xfs/libxfs/xfs_bmap.c +++ b/fs/xfs/libxfs/xfs_bmap.c @@ -5424,7 +5424,7 @@ xfs_bmap_shift_extents( struct xfs_bmap_free *flist, int num_exts) { - struct xfs_btree_cur *cur; + struct xfs_btree_cur *cur = NULL; struct xfs_bmbt_rec_host *gotp; struct xfs_bmbt_irec got; struct xfs_bmbt_irec left; @@ -5435,7 +5435,7 @@ xfs_bmap_shift_extents( int error = 0; int i; int whichfork = XFS_DATA_FORK; - int logflags; + int logflags = 0; xfs_filblks_t blockcount = 0; int total_extents; @@ -5478,16 +5478,11 @@ xfs_bmap_shift_extents( } } - /* We are going to change core inode */ - logflags = XFS_ILOG_CORE; if (ifp->if_flags & XFS_IFBROOT) { cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); cur->bc_private.b.firstblock = *firstblock; cur->bc_private.b.flist = flist; cur->bc_private.b.flags = 0; - } else { - cur = NULL; - logflags |= XFS_ILOG_DEXT; } /* @@ -5545,11 +5540,14 @@ xfs_bmap_shift_extents( blockcount = left.br_blockcount + got.br_blockcount; xfs_iext_remove(ip, *current_ext, 1, 0); + logflags |= XFS_ILOG_CORE; if (cur) { error = xfs_btree_delete(cur, &i); if (error) goto del_cursor; XFS_WANT_CORRUPTED_GOTO(i == 1, del_cursor); + } else { + logflags |= XFS_ILOG_DEXT; } XFS_IFORK_NEXT_SET(ip, whichfork, XFS_IFORK_NEXTENTS(ip, whichfork) - 1); @@ -5575,6 +5573,7 @@ xfs_bmap_shift_extents( got.br_startoff = startoff; } + logflags |= XFS_ILOG_CORE; if (cur) { error = xfs_bmbt_update(cur, got.br_startoff, got.br_startblock, @@ -5582,6 +5581,8 @@ xfs_bmap_shift_extents( got.br_state); if (error) goto del_cursor; + } else { + logflags |= XFS_ILOG_DEXT; } (*current_ext)++; @@ -5597,6 +5598,7 @@ del_cursor: xfs_btree_del_cursor(cur, error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); - xfs_trans_log_inode(tp, ip, logflags); + if (logflags) + xfs_trans_log_inode(tp, ip, logflags); return error; } diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 11e9b4caa54f..b984647c24db 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -1753,11 +1753,72 @@ xfs_vm_readpages( return mpage_readpages(mapping, pages, nr_pages, xfs_get_blocks); } +/* + * This is basically a copy of __set_page_dirty_buffers() with one + * small tweak: buffers beyond EOF do not get marked dirty. If we mark them + * dirty, we'll never be able to clean them because we don't write buffers + * beyond EOF, and that means we can't invalidate pages that span EOF + * that have been marked dirty. Further, the dirty state can leak into + * the file interior if the file is extended, resulting in all sorts of + * bad things happening as the state does not match the underlying data. + * + * XXX: this really indicates that bufferheads in XFS need to die. Warts like + * this only exist because of bufferheads and how the generic code manages them. + */ +STATIC int +xfs_vm_set_page_dirty( + struct page *page) +{ + struct address_space *mapping = page->mapping; + struct inode *inode = mapping->host; + loff_t end_offset; + loff_t offset; + int newly_dirty; + + if (unlikely(!mapping)) + return !TestSetPageDirty(page); + + end_offset = i_size_read(inode); + offset = page_offset(page); + + spin_lock(&mapping->private_lock); + if (page_has_buffers(page)) { + struct buffer_head *head = page_buffers(page); + struct buffer_head *bh = head; + + do { + if (offset < end_offset) + set_buffer_dirty(bh); + bh = bh->b_this_page; + offset += 1 << inode->i_blkbits; + } while (bh != head); + } + newly_dirty = !TestSetPageDirty(page); + spin_unlock(&mapping->private_lock); + + if (newly_dirty) { + /* sigh - __set_page_dirty() is static, so copy it here, too */ + unsigned long flags; + + spin_lock_irqsave(&mapping->tree_lock, flags); + if (page->mapping) { /* Race with truncate? */ + WARN_ON_ONCE(!PageUptodate(page)); + account_page_dirtied(page, mapping); + radix_tree_tag_set(&mapping->page_tree, + page_index(page), PAGECACHE_TAG_DIRTY); + } + spin_unlock_irqrestore(&mapping->tree_lock, flags); + __mark_inode_dirty(mapping->host, I_DIRTY_PAGES); + } + return newly_dirty; +} + const struct address_space_operations xfs_address_space_operations = { .readpage = xfs_vm_readpage, .readpages = xfs_vm_readpages, .writepage = xfs_vm_writepage, .writepages = xfs_vm_writepages, + .set_page_dirty = xfs_vm_set_page_dirty, .releasepage = xfs_vm_releasepage, .invalidatepage = xfs_vm_invalidatepage, .write_begin = xfs_vm_write_begin, diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c index 2f1e30d39a35..1707980f9a4b 100644 --- a/fs/xfs/xfs_bmap_util.c +++ b/fs/xfs/xfs_bmap_util.c @@ -1470,6 +1470,26 @@ xfs_collapse_file_space( start_fsb = XFS_B_TO_FSB(mp, offset + len); shift_fsb = XFS_B_TO_FSB(mp, len); + /* + * Writeback the entire file and force remove any post-eof blocks. The + * writeback prevents changes to the extent list via concurrent + * writeback and the eofblocks trim prevents the extent shift algorithm + * from running into a post-eof delalloc extent. + * + * XXX: This is a temporary fix until the extent shift loop below is + * converted to use offsets and lookups within the ILOCK rather than + * carrying around the index into the extent list for the next + * iteration. + */ + error = filemap_write_and_wait(VFS_I(ip)->i_mapping); + if (error) + return error; + if (xfs_can_free_eofblocks(ip, true)) { + error = xfs_free_eofblocks(mp, ip, false); + if (error) + return error; + } + error = xfs_free_file_space(ip, offset, len); if (error) return error; diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index 076b1708d134..de5368c803f9 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -291,12 +291,22 @@ xfs_file_read_iter( if (inode->i_mapping->nrpages) { ret = filemap_write_and_wait_range( VFS_I(ip)->i_mapping, - pos, -1); + pos, pos + size - 1); if (ret) { xfs_rw_iunlock(ip, XFS_IOLOCK_EXCL); return ret; } - truncate_pagecache_range(VFS_I(ip), pos, -1); + + /* + * Invalidate whole pages. This can return an error if + * we fail to invalidate a page, but this should never + * happen on XFS. Warn if it does fail. + */ + ret = invalidate_inode_pages2_range(VFS_I(ip)->i_mapping, + pos >> PAGE_CACHE_SHIFT, + (pos + size - 1) >> PAGE_CACHE_SHIFT); + WARN_ON_ONCE(ret); + ret = 0; } xfs_rw_ilock_demote(ip, XFS_IOLOCK_EXCL); } @@ -632,10 +642,19 @@ xfs_file_dio_aio_write( if (mapping->nrpages) { ret = filemap_write_and_wait_range(VFS_I(ip)->i_mapping, - pos, -1); + pos, pos + count - 1); if (ret) goto out; - truncate_pagecache_range(VFS_I(ip), pos, -1); + /* + * Invalidate whole pages. This can return an error if + * we fail to invalidate a page, but this should never + * happen on XFS. Warn if it does fail. + */ + ret = invalidate_inode_pages2_range(VFS_I(ip)->i_mapping, + pos >> PAGE_CACHE_SHIFT, + (pos + count - 1) >> PAGE_CACHE_SHIFT); + WARN_ON_ONCE(ret); + ret = 0; } /* |