diff options
Diffstat (limited to 'fs/btrfs/file-item.c')
| -rw-r--r-- | fs/btrfs/file-item.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c index 8fa98d55fcfd..443cc31dc6ce 100644 --- a/fs/btrfs/file-item.c +++ b/fs/btrfs/file-item.c @@ -239,7 +239,8 @@ int btrfs_lookup_file_extent(struct btrfs_trans_handle *trans, } /** - * btrfs_lookup_bio_sums - Look up checksums for a bio. + * btrfs_lookup_bio_sums - Look up checksums for a read bio. + * * @inode: inode that the bio is for. * @bio: bio to look up. * @offset: Unless (u64)-1, look up checksums for this offset in the file. @@ -274,6 +275,15 @@ blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, if (!fs_info->csum_root || (BTRFS_I(inode)->flags & BTRFS_INODE_NODATASUM)) return BLK_STS_OK; + /* + * This function is only called for read bio. + * + * This means two things: + * - All our csums should only be in csum tree + * No ordered extents csums, as ordered extents are only for write + * path. + */ + ASSERT(bio_op(bio) == REQ_OP_READ); path = btrfs_alloc_path(); if (!path) return BLK_STS_RESOURCE; @@ -324,10 +334,6 @@ blk_status_t btrfs_lookup_bio_sums(struct inode *inode, struct bio *bio, if (page_offsets) offset = page_offset(bvec.bv_page) + bvec.bv_offset; - count = btrfs_find_ordered_sum(BTRFS_I(inode), offset, - disk_bytenr, csum, nblocks); - if (count) - goto found; if (!item || disk_bytenr < item_start_offset || disk_bytenr >= item_last_offset) { |