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| author | Johannes Thumshirn <johannes.thumshirn@wdc.com> | 2024-12-03 08:40:22 +0100 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2024-12-06 15:04:13 +0100 |
| commit | c7c97ceff98cc459bf5e358e5cbd06fcb651d501 (patch) | |
| tree | 77a64a1ff462447e1153356077015939c11f16fa /fs/btrfs | |
| parent | btrfs: properly wait for writeback before buffered write (diff) | |
| download | linux-c7c97ceff98cc459bf5e358e5cbd06fcb651d501.tar.xz linux-c7c97ceff98cc459bf5e358e5cbd06fcb651d501.zip | |
btrfs: handle bio_split() errors
Commit e546fe1da9bd ("block: Rework bio_split() return value") changed
bio_split() so that it can return errors.
Add error handling for it in btrfs_split_bio() and ultimately
btrfs_submit_chunk(). As the bio is not submitted, the bio counter must
be decremented to pair btrfs_bio_counter_inc_blocked().
Reviewed-by: John Garry <john.g.garry@oracle.com>
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/bio.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/fs/btrfs/bio.c b/fs/btrfs/bio.c index 1f216d07eff6..af3db0a7ae4d 100644 --- a/fs/btrfs/bio.c +++ b/fs/btrfs/bio.c @@ -81,6 +81,9 @@ static struct btrfs_bio *btrfs_split_bio(struct btrfs_fs_info *fs_info, bio = bio_split(&orig_bbio->bio, map_length >> SECTOR_SHIFT, GFP_NOFS, &btrfs_clone_bioset); + if (IS_ERR(bio)) + return ERR_CAST(bio); + bbio = btrfs_bio(bio); btrfs_bio_init(bbio, fs_info, NULL, orig_bbio); bbio->inode = orig_bbio->inode; @@ -678,7 +681,8 @@ static bool btrfs_submit_chunk(struct btrfs_bio *bbio, int mirror_num) &bioc, &smap, &mirror_num); if (error) { ret = errno_to_blk_status(error); - goto fail; + btrfs_bio_counter_dec(fs_info); + goto end_bbio; } map_length = min(map_length, length); @@ -686,7 +690,15 @@ static bool btrfs_submit_chunk(struct btrfs_bio *bbio, int mirror_num) map_length = btrfs_append_map_length(bbio, map_length); if (map_length < length) { - bbio = btrfs_split_bio(fs_info, bbio, map_length); + struct btrfs_bio *split; + + split = btrfs_split_bio(fs_info, bbio, map_length); + if (IS_ERR(split)) { + ret = errno_to_blk_status(PTR_ERR(split)); + btrfs_bio_counter_dec(fs_info); + goto end_bbio; + } + bbio = split; bio = &bbio->bio; } @@ -760,6 +772,7 @@ fail: btrfs_bio_end_io(remaining, ret); } +end_bbio: btrfs_bio_end_io(bbio, ret); /* Do not submit another chunk */ return true; |