diff options
Diffstat (limited to 'fs/btrfs/inode.c')
-rw-r--r-- | fs/btrfs/inode.c | 641 |
1 files changed, 89 insertions, 552 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index efee6d35af52..6c18dc9a1831 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -84,27 +84,12 @@ struct btrfs_dio_data { }; struct btrfs_dio_private { - struct btrfs_inode *inode; - - /* - * Since DIO can use anonymous page, we cannot use page_offset() to - * grab the file offset, thus need a dedicated member for file offset. - */ + /* Range of I/O */ u64 file_offset; - /* Used for bio::bi_size */ u32 bytes; - /* - * References to this structure. There is one reference per in-flight - * bio plus one while we're still setting up. - */ - refcount_t refs; - - /* Array of checksums */ - u8 *csums; - /* This must be last */ - struct bio bio; + struct btrfs_bio bbio; }; static struct bio_set btrfs_dio_bioset; @@ -228,7 +213,7 @@ static inline void btrfs_cleanup_ordered_extents(struct btrfs_inode *inode, { unsigned long index = offset >> PAGE_SHIFT; unsigned long end_index = (offset + bytes - 1) >> PAGE_SHIFT; - u64 page_start, page_end; + u64 page_start = 0, page_end = 0; struct page *page; if (locked_page) { @@ -2536,19 +2521,6 @@ void btrfs_clear_delalloc_extent(struct btrfs_inode *inode, } /* - * in order to insert checksums into the metadata in large chunks, - * we wait until bio submission time. All the pages in the bio are - * checksummed and sums are attached onto the ordered extent record. - * - * At IO completion time the cums attached on the ordered extent record - * are inserted into the btree - */ -blk_status_t btrfs_submit_bio_start(struct btrfs_inode *inode, struct bio *bio) -{ - return btrfs_csum_one_bio(inode, bio, (u64)-1, false); -} - -/* * Split an extent_map at [start, start + len] * * This function is intended to be used only for extract_ordered_extent(). @@ -2663,19 +2635,19 @@ out: return ret; } -static blk_status_t extract_ordered_extent(struct btrfs_inode *inode, - struct bio *bio, loff_t file_offset) +blk_status_t btrfs_extract_ordered_extent(struct btrfs_bio *bbio) { + u64 start = (u64)bbio->bio.bi_iter.bi_sector << SECTOR_SHIFT; + u64 len = bbio->bio.bi_iter.bi_size; + struct btrfs_inode *inode = bbio->inode; struct btrfs_ordered_extent *ordered; - u64 start = (u64)bio->bi_iter.bi_sector << SECTOR_SHIFT; u64 file_len; - u64 len = bio->bi_iter.bi_size; u64 end = start + len; u64 ordered_end; u64 pre, post; int ret = 0; - ordered = btrfs_lookup_ordered_extent(inode, file_offset); + ordered = btrfs_lookup_ordered_extent(inode, bbio->file_offset); if (WARN_ON_ONCE(!ordered)) return BLK_STS_IOERR; @@ -2715,7 +2687,7 @@ static blk_status_t extract_ordered_extent(struct btrfs_inode *inode, ret = btrfs_split_ordered_extent(ordered, pre, post); if (ret) goto out; - ret = split_zoned_em(inode, file_offset, file_len, pre, post); + ret = split_zoned_em(inode, bbio->file_offset, file_len, pre, post); out: btrfs_put_ordered_extent(ordered); @@ -2723,75 +2695,6 @@ out: return errno_to_blk_status(ret); } -void btrfs_submit_data_write_bio(struct btrfs_inode *inode, struct bio *bio, int mirror_num) -{ - struct btrfs_fs_info *fs_info = inode->root->fs_info; - blk_status_t ret; - - if (bio_op(bio) == REQ_OP_ZONE_APPEND) { - ret = extract_ordered_extent(inode, bio, - page_offset(bio_first_bvec_all(bio)->bv_page)); - if (ret) { - btrfs_bio_end_io(btrfs_bio(bio), ret); - return; - } - } - - /* - * If we need to checksum, and the I/O is not issued by fsync and - * friends, that is ->sync_writers != 0, defer the submission to a - * workqueue to parallelize it. - * - * Csum items for reloc roots have already been cloned at this point, - * so they are handled as part of the no-checksum case. - */ - if (!(inode->flags & BTRFS_INODE_NODATASUM) && - !test_bit(BTRFS_FS_STATE_NO_CSUMS, &fs_info->fs_state) && - !btrfs_is_data_reloc_root(inode->root)) { - if (!atomic_read(&inode->sync_writers) && - btrfs_wq_submit_bio(inode, bio, mirror_num, 0, WQ_SUBMIT_DATA)) - return; - - ret = btrfs_csum_one_bio(inode, bio, (u64)-1, false); - if (ret) { - btrfs_bio_end_io(btrfs_bio(bio), ret); - return; - } - } - btrfs_submit_bio(fs_info, bio, mirror_num); -} - -void btrfs_submit_data_read_bio(struct btrfs_inode *inode, struct bio *bio, - int mirror_num, enum btrfs_compression_type compress_type) -{ - struct btrfs_fs_info *fs_info = inode->root->fs_info; - blk_status_t ret; - - if (compress_type != BTRFS_COMPRESS_NONE) { - /* - * btrfs_submit_compressed_read will handle completing the bio - * if there were any errors, so just return here. - */ - btrfs_submit_compressed_read(&inode->vfs_inode, bio, mirror_num); - return; - } - - /* Save the original iter for read repair */ - btrfs_bio(bio)->iter = bio->bi_iter; - - /* - * Lookup bio sums does extra checks around whether we need to csum or - * not, which is why we ignore skip_sum here. - */ - ret = btrfs_lookup_bio_sums(&inode->vfs_inode, bio, NULL); - if (ret) { - btrfs_bio_end_io(btrfs_bio(bio), ret); - return; - } - - btrfs_submit_bio(fs_info, bio, mirror_num); -} - /* * given a list of ordered sums record them in the inode. This happens * at IO completion time based on sums calculated at bio submission time. @@ -2969,7 +2872,7 @@ again: unlock_extent(&inode->io_tree, page_start, page_end, &cached_state); unlock_page(page); - btrfs_start_ordered_extent(ordered, 1); + btrfs_start_ordered_extent(ordered); btrfs_put_ordered_extent(ordered); goto again; } @@ -3259,15 +3162,13 @@ int btrfs_finish_ordered_io(struct btrfs_ordered_extent *ordered_extent) goto out; } - /* A valid bdev implies a write on a sequential zone */ - if (ordered_extent->bdev) { + /* A valid ->physical implies a write on a sequential zone. */ + if (ordered_extent->physical != (u64)-1) { btrfs_rewrite_logical_zoned(ordered_extent); btrfs_zone_finish_endio(fs_info, ordered_extent->disk_bytenr, ordered_extent->disk_num_bytes); } - btrfs_free_io_failure_record(inode, start, end); - if (test_bit(BTRFS_ORDERED_TRUNCATED, &ordered_extent->flags)) { truncated = true; logical_len = ordered_extent->truncated_len; @@ -3474,109 +3375,55 @@ static u8 *btrfs_csum_ptr(const struct btrfs_fs_info *fs_info, u8 *csums, u64 of } /* - * check_data_csum - verify checksum of one sector of uncompressed data - * @inode: inode - * @bbio: btrfs_bio which contains the csum + * Verify the checksum of a single data sector. + * + * @bbio: btrfs_io_bio which contains the csum + * @dev: device the sector is on * @bio_offset: offset to the beginning of the bio (in bytes) - * @page: page where is the data to be verified - * @pgoff: offset inside the page + * @bv: bio_vec to check * - * The length of such check is always one sector size. + * Check if the checksum on a data block is valid. When a checksum mismatch is + * detected, report the error and fill the corrupted range with zero. * - * When csum mismatch is detected, we will also report the error and fill the - * corrupted range with zero. (Thus it needs the extra parameters) + * Return %true if the sector is ok or had no checksum to start with, else %false. */ -int btrfs_check_data_csum(struct btrfs_inode *inode, struct btrfs_bio *bbio, - u32 bio_offset, struct page *page, u32 pgoff) +bool btrfs_data_csum_ok(struct btrfs_bio *bbio, struct btrfs_device *dev, + u32 bio_offset, struct bio_vec *bv) { + struct btrfs_inode *inode = bbio->inode; struct btrfs_fs_info *fs_info = inode->root->fs_info; - u32 len = fs_info->sectorsize; + u64 file_offset = bbio->file_offset + bio_offset; + u64 end = file_offset + bv->bv_len - 1; u8 *csum_expected; u8 csum[BTRFS_CSUM_SIZE]; - ASSERT(pgoff + len <= PAGE_SIZE); + ASSERT(bv->bv_len == fs_info->sectorsize); - csum_expected = btrfs_csum_ptr(fs_info, bbio->csum, bio_offset); + if (!bbio->csum) + return true; - if (btrfs_check_sector_csum(fs_info, page, pgoff, csum, csum_expected)) + if (btrfs_is_data_reloc_root(inode->root) && + test_range_bit(&inode->io_tree, file_offset, end, EXTENT_NODATASUM, + 1, NULL)) { + /* Skip the range without csum for data reloc inode */ + clear_extent_bits(&inode->io_tree, file_offset, end, + EXTENT_NODATASUM); + return true; + } + + csum_expected = btrfs_csum_ptr(fs_info, bbio->csum, bio_offset); + if (btrfs_check_sector_csum(fs_info, bv->bv_page, bv->bv_offset, csum, + csum_expected)) goto zeroit; - return 0; + return true; zeroit: - btrfs_print_data_csum_error(inode, bbio->file_offset + bio_offset, - csum, csum_expected, bbio->mirror_num); - if (bbio->device) - btrfs_dev_stat_inc_and_print(bbio->device, - BTRFS_DEV_STAT_CORRUPTION_ERRS); - memzero_page(page, pgoff, len); - return -EIO; -} - -/* - * When reads are done, we need to check csums to verify the data is correct. - * if there's a match, we allow the bio to finish. If not, the code in - * extent_io.c will try to find good copies for us. - * - * @bio_offset: offset to the beginning of the bio (in bytes) - * @start: file offset of the range start - * @end: file offset of the range end (inclusive) - * - * Return a bitmap where bit set means a csum mismatch, and bit not set means - * csum match. - */ -unsigned int btrfs_verify_data_csum(struct btrfs_bio *bbio, - u32 bio_offset, struct page *page, - u64 start, u64 end) -{ - struct btrfs_inode *inode = BTRFS_I(page->mapping->host); - struct btrfs_root *root = inode->root; - struct btrfs_fs_info *fs_info = root->fs_info; - struct extent_io_tree *io_tree = &inode->io_tree; - const u32 sectorsize = root->fs_info->sectorsize; - u32 pg_off; - unsigned int result = 0; - - /* - * This only happens for NODATASUM or compressed read. - * Normally this should be covered by above check for compressed read - * or the next check for NODATASUM. Just do a quicker exit here. - */ - if (bbio->csum == NULL) - return 0; - - if (inode->flags & BTRFS_INODE_NODATASUM) - return 0; - - if (unlikely(test_bit(BTRFS_FS_STATE_NO_CSUMS, &fs_info->fs_state))) - return 0; - - ASSERT(page_offset(page) <= start && - end <= page_offset(page) + PAGE_SIZE - 1); - for (pg_off = offset_in_page(start); - pg_off < offset_in_page(end); - pg_off += sectorsize, bio_offset += sectorsize) { - u64 file_offset = pg_off + page_offset(page); - int ret; - - if (btrfs_is_data_reloc_root(root) && - test_range_bit(io_tree, file_offset, - file_offset + sectorsize - 1, - EXTENT_NODATASUM, 1, NULL)) { - /* Skip the range without csum for data reloc inode */ - clear_extent_bits(io_tree, file_offset, - file_offset + sectorsize - 1, - EXTENT_NODATASUM); - continue; - } - ret = btrfs_check_data_csum(inode, bbio, bio_offset, page, pg_off); - if (ret < 0) { - const int nr_bit = (pg_off - offset_in_page(start)) >> - root->fs_info->sectorsize_bits; - - result |= (1U << nr_bit); - } - } - return result; + btrfs_print_data_csum_error(inode, file_offset, csum, csum_expected, + bbio->mirror_num); + if (dev) + btrfs_dev_stat_inc_and_print(dev, BTRFS_DEV_STAT_CORRUPTION_ERRS); + memzero_bvec(bv); + return false; } /* @@ -4987,7 +4834,7 @@ again: unlock_extent(io_tree, block_start, block_end, &cached_state); unlock_page(page); put_page(page); - btrfs_start_ordered_extent(ordered, 1); + btrfs_start_ordered_extent(ordered); btrfs_put_ordered_extent(ordered); goto again; } @@ -5466,8 +5313,6 @@ void btrfs_evict_inode(struct inode *inode) if (is_bad_inode(inode)) goto no_delete; - btrfs_free_io_failure_record(BTRFS_I(inode), 0, (u64)-1); - if (test_bit(BTRFS_FS_LOG_RECOVERING, &fs_info->flags)) goto no_delete; @@ -7392,7 +7237,7 @@ static int lock_extent_direct(struct inode *inode, u64 lockstart, u64 lockend, */ if (writing || test_bit(BTRFS_ORDERED_DIRECT, &ordered->flags)) - btrfs_start_ordered_extent(ordered, 1); + btrfs_start_ordered_extent(ordered); else ret = nowait ? -EAGAIN : -ENOTBLK; btrfs_put_ordered_extent(ordered); @@ -7833,10 +7678,6 @@ static int btrfs_dio_iomap_begin(struct inode *inode, loff_t start, iomap->offset = start; iomap->bdev = fs_info->fs_devices->latest_dev->bdev; iomap->length = len; - - if (write && btrfs_use_zone_append(BTRFS_I(inode), em->block_start)) - iomap->flags |= IOMAP_F_ZONE_APPEND; - free_extent_map(em); return 0; @@ -7888,267 +7729,47 @@ static int btrfs_dio_iomap_end(struct inode *inode, loff_t pos, loff_t length, return ret; } -static void btrfs_dio_private_put(struct btrfs_dio_private *dip) -{ - /* - * This implies a barrier so that stores to dio_bio->bi_status before - * this and loads of dio_bio->bi_status after this are fully ordered. - */ - if (!refcount_dec_and_test(&dip->refs)) - return; - - if (btrfs_op(&dip->bio) == BTRFS_MAP_WRITE) { - btrfs_mark_ordered_io_finished(dip->inode, NULL, - dip->file_offset, dip->bytes, - !dip->bio.bi_status); - } else { - unlock_extent(&dip->inode->io_tree, - dip->file_offset, - dip->file_offset + dip->bytes - 1, NULL); - } - - kfree(dip->csums); - bio_endio(&dip->bio); -} - -void btrfs_submit_dio_repair_bio(struct btrfs_inode *inode, struct bio *bio, int mirror_num) -{ - struct btrfs_dio_private *dip = btrfs_bio(bio)->private; - - BUG_ON(bio_op(bio) == REQ_OP_WRITE); - - refcount_inc(&dip->refs); - btrfs_submit_bio(inode->root->fs_info, bio, mirror_num); -} - -static blk_status_t btrfs_check_read_dio_bio(struct btrfs_dio_private *dip, - struct btrfs_bio *bbio, - const bool uptodate) -{ - struct inode *inode = &dip->inode->vfs_inode; - struct btrfs_fs_info *fs_info = BTRFS_I(inode)->root->fs_info; - const bool csum = !(BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM); - blk_status_t err = BLK_STS_OK; - struct bvec_iter iter; - struct bio_vec bv; - u32 offset; - - btrfs_bio_for_each_sector(fs_info, bv, bbio, iter, offset) { - u64 start = bbio->file_offset + offset; - - if (uptodate && - (!csum || !btrfs_check_data_csum(BTRFS_I(inode), bbio, offset, - bv.bv_page, bv.bv_offset))) { - btrfs_clean_io_failure(BTRFS_I(inode), start, - bv.bv_page, bv.bv_offset); - } else { - int ret; - - ret = btrfs_repair_one_sector(BTRFS_I(inode), bbio, offset, - bv.bv_page, bv.bv_offset, false); - if (ret) - err = errno_to_blk_status(ret); - } - } - - return err; -} - -blk_status_t btrfs_submit_bio_start_direct_io(struct btrfs_inode *inode, - struct bio *bio, - u64 dio_file_offset) +static void btrfs_dio_end_io(struct btrfs_bio *bbio) { - return btrfs_csum_one_bio(inode, bio, dio_file_offset, false); -} - -static void btrfs_end_dio_bio(struct btrfs_bio *bbio) -{ - struct btrfs_dio_private *dip = bbio->private; + struct btrfs_dio_private *dip = + container_of(bbio, struct btrfs_dio_private, bbio); + struct btrfs_inode *inode = bbio->inode; struct bio *bio = &bbio->bio; - blk_status_t err = bio->bi_status; - - if (err) - btrfs_warn(dip->inode->root->fs_info, - "direct IO failed ino %llu rw %d,%u sector %#Lx len %u err no %d", - btrfs_ino(dip->inode), bio_op(bio), - bio->bi_opf, bio->bi_iter.bi_sector, - bio->bi_iter.bi_size, err); - - if (bio_op(bio) == REQ_OP_READ) - err = btrfs_check_read_dio_bio(dip, bbio, !err); - - if (err) - dip->bio.bi_status = err; - - btrfs_record_physical_zoned(&dip->inode->vfs_inode, bbio->file_offset, bio); - - bio_put(bio); - btrfs_dio_private_put(dip); -} -static void btrfs_submit_dio_bio(struct bio *bio, struct btrfs_inode *inode, - u64 file_offset, int async_submit) -{ - struct btrfs_fs_info *fs_info = inode->root->fs_info; - struct btrfs_dio_private *dip = btrfs_bio(bio)->private; - blk_status_t ret; - - /* Save the original iter for read repair */ - if (btrfs_op(bio) == BTRFS_MAP_READ) - btrfs_bio(bio)->iter = bio->bi_iter; - - if (inode->flags & BTRFS_INODE_NODATASUM) - goto map; + if (bio->bi_status) { + btrfs_warn(inode->root->fs_info, + "direct IO failed ino %llu op 0x%0x offset %#llx len %u err no %d", + btrfs_ino(inode), bio->bi_opf, + dip->file_offset, dip->bytes, bio->bi_status); + } - if (btrfs_op(bio) == BTRFS_MAP_WRITE) { - /* Check btrfs_submit_data_write_bio() for async submit rules */ - if (async_submit && !atomic_read(&inode->sync_writers) && - btrfs_wq_submit_bio(inode, bio, 0, file_offset, - WQ_SUBMIT_DATA_DIO)) - return; + if (btrfs_op(bio) == BTRFS_MAP_WRITE) + btrfs_mark_ordered_io_finished(inode, NULL, dip->file_offset, + dip->bytes, !bio->bi_status); + else + unlock_extent(&inode->io_tree, dip->file_offset, + dip->file_offset + dip->bytes - 1, NULL); - /* - * If we aren't doing async submit, calculate the csum of the - * bio now. - */ - ret = btrfs_csum_one_bio(inode, bio, file_offset, false); - if (ret) { - btrfs_bio_end_io(btrfs_bio(bio), ret); - return; - } - } else { - btrfs_bio(bio)->csum = btrfs_csum_ptr(fs_info, dip->csums, - file_offset - dip->file_offset); - } -map: - btrfs_submit_bio(fs_info, bio, 0); + bbio->bio.bi_private = bbio->private; + iomap_dio_bio_end_io(bio); } -static void btrfs_submit_direct(const struct iomap_iter *iter, - struct bio *dio_bio, loff_t file_offset) +static void btrfs_dio_submit_io(const struct iomap_iter *iter, struct bio *bio, + loff_t file_offset) { + struct btrfs_bio *bbio = btrfs_bio(bio); struct btrfs_dio_private *dip = - container_of(dio_bio, struct btrfs_dio_private, bio); - struct inode *inode = iter->inode; - const bool write = (btrfs_op(dio_bio) == BTRFS_MAP_WRITE); - struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb); - const bool raid56 = (btrfs_data_alloc_profile(fs_info) & - BTRFS_BLOCK_GROUP_RAID56_MASK); - struct bio *bio; - u64 start_sector; - int async_submit = 0; - u64 submit_len; - u64 clone_offset = 0; - u64 clone_len; - u64 logical; - int ret; - blk_status_t status; - struct btrfs_io_geometry geom; + container_of(bbio, struct btrfs_dio_private, bbio); struct btrfs_dio_data *dio_data = iter->private; - struct extent_map *em = NULL; - - dip->inode = BTRFS_I(inode); - dip->file_offset = file_offset; - dip->bytes = dio_bio->bi_iter.bi_size; - refcount_set(&dip->refs, 1); - dip->csums = NULL; - - if (!write && !(BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM)) { - unsigned int nr_sectors = - (dio_bio->bi_iter.bi_size >> fs_info->sectorsize_bits); - - /* - * Load the csums up front to reduce csum tree searches and - * contention when submitting bios. - */ - status = BLK_STS_RESOURCE; - dip->csums = kcalloc(nr_sectors, fs_info->csum_size, GFP_NOFS); - if (!dip->csums) - goto out_err; - - status = btrfs_lookup_bio_sums(inode, dio_bio, dip->csums); - if (status != BLK_STS_OK) - goto out_err; - } - - start_sector = dio_bio->bi_iter.bi_sector; - submit_len = dio_bio->bi_iter.bi_size; - - do { - logical = start_sector << 9; - em = btrfs_get_chunk_map(fs_info, logical, submit_len); - if (IS_ERR(em)) { - status = errno_to_blk_status(PTR_ERR(em)); - em = NULL; - goto out_err_em; - } - ret = btrfs_get_io_geometry(fs_info, em, btrfs_op(dio_bio), - logical, &geom); - if (ret) { - status = errno_to_blk_status(ret); - goto out_err_em; - } - clone_len = min(submit_len, geom.len); - ASSERT(clone_len <= UINT_MAX); + btrfs_bio_init(bbio, BTRFS_I(iter->inode), btrfs_dio_end_io, bio->bi_private); + bbio->file_offset = file_offset; - /* - * This will never fail as it's passing GPF_NOFS and - * the allocation is backed by btrfs_bioset. - */ - bio = btrfs_bio_clone_partial(dio_bio, clone_offset, clone_len, - btrfs_end_dio_bio, dip); - btrfs_bio(bio)->file_offset = file_offset; - - if (bio_op(bio) == REQ_OP_ZONE_APPEND) { - status = extract_ordered_extent(BTRFS_I(inode), bio, - file_offset); - if (status) { - bio_put(bio); - goto out_err; - } - } - - ASSERT(submit_len >= clone_len); - submit_len -= clone_len; - - /* - * Increase the count before we submit the bio so we know - * the end IO handler won't happen before we increase the - * count. Otherwise, the dip might get freed before we're - * done setting it up. - * - * We transfer the initial reference to the last bio, so we - * don't need to increment the reference count for the last one. - */ - if (submit_len > 0) { - refcount_inc(&dip->refs); - /* - * If we are submitting more than one bio, submit them - * all asynchronously. The exception is RAID 5 or 6, as - * asynchronous checksums make it difficult to collect - * full stripe writes. - */ - if (!raid56) - async_submit = 1; - } - - btrfs_submit_dio_bio(bio, BTRFS_I(inode), file_offset, async_submit); - - dio_data->submitted += clone_len; - clone_offset += clone_len; - start_sector += clone_len >> 9; - file_offset += clone_len; - - free_extent_map(em); - } while (submit_len > 0); - return; + dip->file_offset = file_offset; + dip->bytes = bio->bi_iter.bi_size; -out_err_em: - free_extent_map(em); -out_err: - dio_bio->bi_status = status; - btrfs_dio_private_put(dip); + dio_data->submitted += bio->bi_iter.bi_size; + btrfs_submit_bio(bio, 0); } static const struct iomap_ops btrfs_dio_iomap_ops = { @@ -8157,7 +7778,7 @@ static const struct iomap_ops btrfs_dio_iomap_ops = { }; static const struct iomap_dio_ops btrfs_dio_ops = { - .submit_io = btrfs_submit_direct, + .submit_io = btrfs_dio_submit_io, .bio_set = &btrfs_dio_bioset, }; @@ -8552,7 +8173,7 @@ again: unlock_extent(io_tree, page_start, page_end, &cached_state); unlock_page(page); up_read(&BTRFS_I(inode)->i_mmap_lock); - btrfs_start_ordered_extent(ordered, 1); + btrfs_start_ordered_extent(ordered); btrfs_put_ordered_extent(ordered); goto again; } @@ -8850,7 +8471,6 @@ struct inode *btrfs_alloc_inode(struct super_block *sb) ei->last_log_commit = 0; spin_lock_init(&ei->lock); - spin_lock_init(&ei->io_failure_lock); ei->outstanding_extents = 0; if (sb->s_magic != BTRFS_TEST_MAGIC) btrfs_init_metadata_block_rsv(fs_info, &ei->block_rsv, @@ -8870,7 +8490,6 @@ struct inode *btrfs_alloc_inode(struct super_block *sb) ei->io_tree.inode = ei; extent_io_tree_init(fs_info, &ei->file_extent_tree, IO_TREE_INODE_FILE_EXTENT); - ei->io_failure_tree = RB_ROOT; atomic_set(&ei->sync_writers, 0); mutex_init(&ei->log_mutex); btrfs_ordered_inode_tree_init(&ei->ordered_tree); @@ -8994,7 +8613,7 @@ int __init btrfs_init_cachep(void) goto fail; if (bioset_init(&btrfs_dio_bioset, BIO_POOL_SIZE, - offsetof(struct btrfs_dio_private, bio), + offsetof(struct btrfs_dio_private, bbio.bio), BIOSET_NEED_BVECS)) goto fail; @@ -10289,65 +9908,13 @@ struct btrfs_encoded_read_private { wait_queue_head_t wait; atomic_t pending; blk_status_t status; - bool skip_csum; }; -static blk_status_t submit_encoded_read_bio(struct btrfs_inode *inode, - struct bio *bio, int mirror_num) -{ - struct btrfs_encoded_read_private *priv = btrfs_bio(bio)->private; - struct btrfs_fs_info *fs_info = inode->root->fs_info; - blk_status_t ret; - - if (!priv->skip_csum) { - ret = btrfs_lookup_bio_sums(&inode->vfs_inode, bio, NULL); - if (ret) - return ret; - } - - atomic_inc(&priv->pending); - btrfs_submit_bio(fs_info, bio, mirror_num); - return BLK_STS_OK; -} - -static blk_status_t btrfs_encoded_read_verify_csum(struct btrfs_bio *bbio) -{ - const bool uptodate = (bbio->bio.bi_status == BLK_STS_OK); - struct btrfs_encoded_read_private *priv = bbio->private; - struct btrfs_inode *inode = priv->inode; - struct btrfs_fs_info *fs_info = inode->root->fs_info; - u32 sectorsize = fs_info->sectorsize; - struct bio_vec *bvec; - struct bvec_iter_all iter_all; - u32 bio_offset = 0; - - if (priv->skip_csum || !uptodate) - return bbio->bio.bi_status; - - bio_for_each_segment_all(bvec, &bbio->bio, iter_all) { - unsigned int i, nr_sectors, pgoff; - - nr_sectors = BTRFS_BYTES_TO_BLKS(fs_info, bvec->bv_len); - pgoff = bvec->bv_offset; - for (i = 0; i < nr_sectors; i++) { - ASSERT(pgoff < PAGE_SIZE); - if (btrfs_check_data_csum(inode, bbio, bio_offset, - bvec->bv_page, pgoff)) - return BLK_STS_IOERR; - bio_offset += sectorsize; - pgoff += sectorsize; - } - } - return BLK_STS_OK; -} - static void btrfs_encoded_read_endio(struct btrfs_bio *bbio) { struct btrfs_encoded_read_private *priv = bbio->private; - blk_status_t status; - status = btrfs_encoded_read_verify_csum(bbio); - if (status) { + if (bbio->bio.bi_status) { /* * The memory barrier implied by the atomic_dec_return() here * pairs with the memory barrier implied by the @@ -10356,11 +9923,10 @@ static void btrfs_encoded_read_endio(struct btrfs_bio *bbio) * write is observed before the load of status in * btrfs_encoded_read_regular_fill_pages(). */ - WRITE_ONCE(priv->status, status); + WRITE_ONCE(priv->status, bbio->bio.bi_status); } if (!atomic_dec_return(&priv->pending)) wake_up(&priv->wait); - btrfs_bio_free_csum(bbio); bio_put(&bbio->bio); } @@ -10368,47 +9934,26 @@ int btrfs_encoded_read_regular_fill_pages(struct btrfs_inode *inode, u64 file_offset, u64 disk_bytenr, u64 disk_io_size, struct page **pages) { - struct btrfs_fs_info *fs_info = inode->root->fs_info; struct btrfs_encoded_read_private priv = { .inode = inode, .file_offset = file_offset, .pending = ATOMIC_INIT(1), - .skip_csum = (inode->flags & BTRFS_INODE_NODATASUM), }; unsigned long i = 0; u64 cur = 0; - int ret; init_waitqueue_head(&priv.wait); - /* - * Submit bios for the extent, splitting due to bio or stripe limits as - * necessary. - */ + /* Submit bios for the extent, splitting due to bio limits as necessary. */ while (cur < disk_io_size) { - struct extent_map *em; - struct btrfs_io_geometry geom; struct bio *bio = NULL; - u64 remaining; + u64 remaining = disk_io_size - cur; - em = btrfs_get_chunk_map(fs_info, disk_bytenr + cur, - disk_io_size - cur); - if (IS_ERR(em)) { - ret = PTR_ERR(em); - } else { - ret = btrfs_get_io_geometry(fs_info, em, BTRFS_MAP_READ, - disk_bytenr + cur, &geom); - free_extent_map(em); - } - if (ret) { - WRITE_ONCE(priv.status, errno_to_blk_status(ret)); - break; - } - remaining = min(geom.len, disk_io_size - cur); while (bio || remaining) { size_t bytes = min_t(u64, remaining, PAGE_SIZE); if (!bio) { bio = btrfs_bio_alloc(BIO_MAX_VECS, REQ_OP_READ, + inode, btrfs_encoded_read_endio, &priv); bio->bi_iter.bi_sector = @@ -10417,14 +9962,8 @@ int btrfs_encoded_read_regular_fill_pages(struct btrfs_inode *inode, if (!bytes || bio_add_page(bio, pages[i], bytes, 0) < bytes) { - blk_status_t status; - - status = submit_encoded_read_bio(inode, bio, 0); - if (status) { - WRITE_ONCE(priv.status, status); - bio_put(bio); - goto out; - } + atomic_inc(&priv.pending); + btrfs_submit_bio(bio, 0); bio = NULL; continue; } @@ -10435,7 +9974,6 @@ int btrfs_encoded_read_regular_fill_pages(struct btrfs_inode *inode, } } -out: if (atomic_dec_return(&priv.pending)) io_wait_event(priv.wait, !atomic_read(&priv.pending)); /* See btrfs_encoded_read_endio() for ordering. */ @@ -10995,9 +10533,8 @@ static int btrfs_add_swap_extent(struct swap_info_struct *sis, return 0; max_pages = sis->max - bsi->nr_pages; - first_ppage = ALIGN(bsi->block_start, PAGE_SIZE) >> PAGE_SHIFT; - next_ppage = ALIGN_DOWN(bsi->block_start + bsi->block_len, - PAGE_SIZE) >> PAGE_SHIFT; + first_ppage = PAGE_ALIGN(bsi->block_start) >> PAGE_SHIFT; + next_ppage = PAGE_ALIGN_DOWN(bsi->block_start + bsi->block_len) >> PAGE_SHIFT; if (first_ppage >= next_ppage) return 0; |