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authorChris Mason <chris.mason@fusionio.com>2013-02-20 23:06:05 +0400
committerChris Mason <chris.mason@fusionio.com>2013-02-20 23:06:05 +0400
commite942f883bc6651d50be139477baf6fb0eed3d5bb (patch)
treee1d19783e9c8b42198a69c17c9719fb90f302847 /fs/btrfs/disk-io.c
parentb2c6b3e0611c58fbeb6b9c0892b6249f7bdfaf6b (diff)
parent0e4e02636611dbf89a2f36320a32054f9936d6cb (diff)
downloadlinux-e942f883bc6651d50be139477baf6fb0eed3d5bb.tar.xz
Merge branch 'raid56-experimental' into for-linus-3.9
Signed-off-by: Chris Mason <chris.mason@fusionio.com> Conflicts: fs/btrfs/ctree.h fs/btrfs/extent-tree.c fs/btrfs/inode.c fs/btrfs/volumes.c
Diffstat (limited to 'fs/btrfs/disk-io.c')
-rw-r--r--fs/btrfs/disk-io.c62
1 files changed, 53 insertions, 9 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 779b401cd952..eb7c14308521 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -46,6 +46,7 @@
#include "check-integrity.h"
#include "rcu-string.h"
#include "dev-replace.h"
+#include "raid56.h"
#ifdef CONFIG_X86
#include <asm/cpufeature.h>
@@ -640,8 +641,15 @@ err:
btree_readahead_hook(root, eb, eb->start, ret);
}
- if (ret)
+ if (ret) {
+ /*
+ * our io error hook is going to dec the io pages
+ * again, we have to make sure it has something
+ * to decrement
+ */
+ atomic_inc(&eb->io_pages);
clear_extent_buffer_uptodate(eb);
+ }
free_extent_buffer(eb);
out:
return ret;
@@ -655,6 +663,7 @@ static int btree_io_failed_hook(struct page *page, int failed_mirror)
eb = (struct extent_buffer *)page->private;
set_bit(EXTENT_BUFFER_IOERR, &eb->bflags);
eb->read_mirror = failed_mirror;
+ atomic_dec(&eb->io_pages);
if (test_and_clear_bit(EXTENT_BUFFER_READAHEAD, &eb->bflags))
btree_readahead_hook(root, eb, eb->start, -EIO);
return -EIO; /* we fixed nothing */
@@ -671,17 +680,23 @@ static void end_workqueue_bio(struct bio *bio, int err)
end_io_wq->work.flags = 0;
if (bio->bi_rw & REQ_WRITE) {
- if (end_io_wq->metadata == 1)
+ if (end_io_wq->metadata == BTRFS_WQ_ENDIO_METADATA)
btrfs_queue_worker(&fs_info->endio_meta_write_workers,
&end_io_wq->work);
- else if (end_io_wq->metadata == 2)
+ else if (end_io_wq->metadata == BTRFS_WQ_ENDIO_FREE_SPACE)
btrfs_queue_worker(&fs_info->endio_freespace_worker,
&end_io_wq->work);
+ else if (end_io_wq->metadata == BTRFS_WQ_ENDIO_RAID56)
+ btrfs_queue_worker(&fs_info->endio_raid56_workers,
+ &end_io_wq->work);
else
btrfs_queue_worker(&fs_info->endio_write_workers,
&end_io_wq->work);
} else {
- if (end_io_wq->metadata)
+ if (end_io_wq->metadata == BTRFS_WQ_ENDIO_RAID56)
+ btrfs_queue_worker(&fs_info->endio_raid56_workers,
+ &end_io_wq->work);
+ else if (end_io_wq->metadata)
btrfs_queue_worker(&fs_info->endio_meta_workers,
&end_io_wq->work);
else
@@ -696,6 +711,7 @@ static void end_workqueue_bio(struct bio *bio, int err)
* 0 - if data
* 1 - if normal metadta
* 2 - if writing to the free space cache area
+ * 3 - raid parity work
*/
int btrfs_bio_wq_end_io(struct btrfs_fs_info *info, struct bio *bio,
int metadata)
@@ -2179,6 +2195,12 @@ int open_ctree(struct super_block *sb,
init_waitqueue_head(&fs_info->transaction_blocked_wait);
init_waitqueue_head(&fs_info->async_submit_wait);
+ ret = btrfs_alloc_stripe_hash_table(fs_info);
+ if (ret) {
+ err = -ENOMEM;
+ goto fail_alloc;
+ }
+
__setup_root(4096, 4096, 4096, 4096, tree_root,
fs_info, BTRFS_ROOT_TREE_OBJECTID);
@@ -2349,6 +2371,12 @@ int open_ctree(struct super_block *sb,
btrfs_init_workers(&fs_info->endio_meta_write_workers,
"endio-meta-write", fs_info->thread_pool_size,
&fs_info->generic_worker);
+ btrfs_init_workers(&fs_info->endio_raid56_workers,
+ "endio-raid56", fs_info->thread_pool_size,
+ &fs_info->generic_worker);
+ btrfs_init_workers(&fs_info->rmw_workers,
+ "rmw", fs_info->thread_pool_size,
+ &fs_info->generic_worker);
btrfs_init_workers(&fs_info->endio_write_workers, "endio-write",
fs_info->thread_pool_size,
&fs_info->generic_worker);
@@ -2367,6 +2395,8 @@ int open_ctree(struct super_block *sb,
*/
fs_info->endio_workers.idle_thresh = 4;
fs_info->endio_meta_workers.idle_thresh = 4;
+ fs_info->endio_raid56_workers.idle_thresh = 4;
+ fs_info->rmw_workers.idle_thresh = 2;
fs_info->endio_write_workers.idle_thresh = 2;
fs_info->endio_meta_write_workers.idle_thresh = 2;
@@ -2383,6 +2413,8 @@ int open_ctree(struct super_block *sb,
ret |= btrfs_start_workers(&fs_info->fixup_workers);
ret |= btrfs_start_workers(&fs_info->endio_workers);
ret |= btrfs_start_workers(&fs_info->endio_meta_workers);
+ ret |= btrfs_start_workers(&fs_info->rmw_workers);
+ ret |= btrfs_start_workers(&fs_info->endio_raid56_workers);
ret |= btrfs_start_workers(&fs_info->endio_meta_write_workers);
ret |= btrfs_start_workers(&fs_info->endio_write_workers);
ret |= btrfs_start_workers(&fs_info->endio_freespace_worker);
@@ -2726,6 +2758,8 @@ fail_sb_buffer:
btrfs_stop_workers(&fs_info->workers);
btrfs_stop_workers(&fs_info->endio_workers);
btrfs_stop_workers(&fs_info->endio_meta_workers);
+ btrfs_stop_workers(&fs_info->endio_raid56_workers);
+ btrfs_stop_workers(&fs_info->rmw_workers);
btrfs_stop_workers(&fs_info->endio_meta_write_workers);
btrfs_stop_workers(&fs_info->endio_write_workers);
btrfs_stop_workers(&fs_info->endio_freespace_worker);
@@ -2747,6 +2781,7 @@ fail_bdi:
fail_srcu:
cleanup_srcu_struct(&fs_info->subvol_srcu);
fail:
+ btrfs_free_stripe_hash_table(fs_info);
btrfs_close_devices(fs_info->fs_devices);
return err;
@@ -3094,11 +3129,16 @@ int btrfs_calc_num_tolerated_disk_barrier_failures(
((flags & BTRFS_BLOCK_GROUP_PROFILE_MASK)
== 0)))
num_tolerated_disk_barrier_failures = 0;
- else if (num_tolerated_disk_barrier_failures > 1
- &&
- (flags & (BTRFS_BLOCK_GROUP_RAID1 |
- BTRFS_BLOCK_GROUP_RAID10)))
- num_tolerated_disk_barrier_failures = 1;
+ else if (num_tolerated_disk_barrier_failures > 1) {
+ if (flags & (BTRFS_BLOCK_GROUP_RAID1 |
+ BTRFS_BLOCK_GROUP_RAID5 |
+ BTRFS_BLOCK_GROUP_RAID10)) {
+ num_tolerated_disk_barrier_failures = 1;
+ } else if (flags &
+ BTRFS_BLOCK_GROUP_RAID5) {
+ num_tolerated_disk_barrier_failures = 2;
+ }
+ }
}
}
up_read(&sinfo->groups_sem);
@@ -3402,6 +3442,8 @@ int close_ctree(struct btrfs_root *root)
btrfs_stop_workers(&fs_info->workers);
btrfs_stop_workers(&fs_info->endio_workers);
btrfs_stop_workers(&fs_info->endio_meta_workers);
+ btrfs_stop_workers(&fs_info->endio_raid56_workers);
+ btrfs_stop_workers(&fs_info->rmw_workers);
btrfs_stop_workers(&fs_info->endio_meta_write_workers);
btrfs_stop_workers(&fs_info->endio_write_workers);
btrfs_stop_workers(&fs_info->endio_freespace_worker);
@@ -3424,6 +3466,8 @@ int close_ctree(struct btrfs_root *root)
bdi_destroy(&fs_info->bdi);
cleanup_srcu_struct(&fs_info->subvol_srcu);
+ btrfs_free_stripe_hash_table(fs_info);
+
return 0;
}