Hello Jan

> Commit 5b7c665e introduced fs_info->qgroup_ulist, that is allocated during
> btrfs_read_qgroup_config and meant to be used later by the qgroup accounting
> code. However, it is always freed before btrfs_read_qgroup_config returns,
> becuase the commit mentioned above adds a check for (ret), where a check
> for (ret < 0) would have been the right choice. This commit fixes the check.
> 
> Cc: Wang Shilong <[email protected]>
> Signed-off-by: Jan Schmidt <[email protected]>
> ---
> fs/btrfs/qgroup.c |    2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/fs/btrfs/qgroup.c b/fs/btrfs/qgroup.c
> index d059d86..74b432d 100644
> --- a/fs/btrfs/qgroup.c
> +++ b/fs/btrfs/qgroup.c
> @@ -430,7 +430,7 @@ out:
>       }
>       btrfs_free_path(path);
> 
> -     if (ret)
> +     if (ret < 0)
>               ulist_free(fs_info->qgroup_ulist);
> 

Looks good to me ,thanks very much for fixing this issue!

Thanks,
Wang

>       return ret < 0 ? ret : 0;
> -- 
> 1.7.1
> 
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