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btrfs: fix unbalanced unlock of mapping_tree_lock
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>
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1 changed files with 0 additions and 2 deletions
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@ -3087,7 +3087,6 @@ struct btrfs_chunk_map *btrfs_get_chunk_map(struct btrfs_fs_info *fs_info,
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map = btrfs_find_chunk_map(fs_info, logical, length);
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if (unlikely(!map)) {
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read_unlock(&fs_info->mapping_tree_lock);
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btrfs_crit(fs_info,
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"unable to find chunk map for logical %llu length %llu",
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logical, length);
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@ -3095,7 +3094,6 @@ struct btrfs_chunk_map *btrfs_get_chunk_map(struct btrfs_fs_info *fs_info,
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}
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if (unlikely(map->start > logical || map->start + map->chunk_len <= logical)) {
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read_unlock(&fs_info->mapping_tree_lock);
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btrfs_crit(fs_info,
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"found a bad chunk map, wanted %llu-%llu, found %llu-%llu",
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logical, logical + length, map->start,
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