On 28.11.18 г. 5:21 ч., Su Yue wrote:
> In function do_trimming(), block_group->lock should be unlocked first.
>
> Fixes: 7fe1e6415026 ("Btrfs: rewrite btrfs_trim_block_group()")
> Signed-off-by: Su Yue <suy.f...@cn.fujitsu.com>
Reviewed-by: Nikolay Borisov <nbori...@suse.com>
> ---
> fs/btrfs/free-space-cache.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
> index 4ba0aedc878b..3731fa92df56 100644
> --- a/fs/btrfs/free-space-cache.c
> +++ b/fs/btrfs/free-space-cache.c
> @@ -3149,8 +3149,8 @@ static int do_trimming(struct btrfs_block_group_cache
> *block_group,
> space_info->bytes_readonly += reserved_bytes;
> block_group->reserved -= reserved_bytes;
> space_info->bytes_reserved -= reserved_bytes;
> - spin_unlock(&space_info->lock);
> spin_unlock(&block_group->lock);
> + spin_unlock(&space_info->lock);
> }
>
> return ret;
>
