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btrfs: fix unbalanced unlock of mapping_tree_lock

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The error path of btrfs_get_chunk_map() releases
fs_info->mapping_tree_lock. But, it is taken and released in
btrfs_find_chunk_map(). So, there is no need to do so.

Fixes: 7dc66abb5a ("btrfs: use a dedicated data structure for chunk maps")
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Naohiro Aota 2023-12-22 01:46:16 +09:00 committed by David Sterba
parent f03e274a8b
commit d967c914a6
1 changed files with 0 additions and 2 deletions
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2
fs/btrfs/volumes.c
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@ -3087,7 +3087,6 @@ struct btrfs_chunk_map *btrfs_get_chunk_map(struct btrfs_fs_info *fs_info,
map = btrfs_find_chunk_map(fs_info, logical, length);
if (unlikely(!map)) {
read_unlock(&fs_info->mapping_tree_lock);
btrfs_crit(fs_info,
"unable to find chunk map for logical %llu length %llu",
logical, length);
@ -3095,7 +3094,6 @@ struct btrfs_chunk_map *btrfs_get_chunk_map(struct btrfs_fs_info *fs_info,
}
if (unlikely(map->start > logical || map->start + map->chunk_len <= logical)) {
read_unlock(&fs_info->mapping_tree_lock);
btrfs_crit(fs_info,
"found a bad chunk map, wanted %llu-%llu, found %llu-%llu",
logical, logical + length, map->start,