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[1/6] xfs: group quota should return EDQUOT when prj quota enabled

Message ID 70119485-992a-641d-93ab-a9d41f9618d5@redhat.com (mailing list archive)
State Superseded
Headers show
Series xfs: quota timer enhancements | expand

Commit Message

Eric Sandeen May 18, 2020, 6:48 p.m. UTC
Long ago, group & project quota were mutually exclusive, and so
when we turned on XFS_QMOPT_ENOSPC ("return ENOSPC if project quota
is exceeded") when project quota was enabled, we only needed to
disable it again for user quota.

When group & project quota got separated, this got missed, and as a
result if project quota is enabled and group quota is exceeded, the
error code returned is incorrectly returned as ENOSPC not EDQUOT.

Fix this by stripping XFS_QMOPT_ENOSPC out of flags for group
quota when we try to reserve the space.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
---
 fs/xfs/xfs_trans_dquot.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

Comments

Darrick J. Wong May 19, 2020, 4:22 p.m. UTC | #1
On Mon, May 18, 2020 at 01:48:46PM -0500, Eric Sandeen wrote:
> Long ago, group & project quota were mutually exclusive, and so
> when we turned on XFS_QMOPT_ENOSPC ("return ENOSPC if project quota
> is exceeded") when project quota was enabled, we only needed to
> disable it again for user quota.
> 
> When group & project quota got separated, this got missed, and as a
> result if project quota is enabled and group quota is exceeded, the
> error code returned is incorrectly returned as ENOSPC not EDQUOT.
> 
> Fix this by stripping XFS_QMOPT_ENOSPC out of flags for group
> quota when we try to reserve the space.
> 
> Signed-off-by: Eric Sandeen <sandeen@redhat.com>
> Reviewed-by: Christoph Hellwig <hch@lst.de>
> Reviewed-by: Brian Foster <bfoster@redhat.com>

Looks ok,
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>

--D

> ---
>  fs/xfs/xfs_trans_dquot.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/fs/xfs/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c
> index d1b9869bc5fa..2c3557a80e69 100644
> --- a/fs/xfs/xfs_trans_dquot.c
> +++ b/fs/xfs/xfs_trans_dquot.c
> @@ -758,7 +758,8 @@ xfs_trans_reserve_quota_bydquots(
>  	}
>  
>  	if (gdqp) {
> -		error = xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos, flags);
> +		error = xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos,
> +					(flags & ~XFS_QMOPT_ENOSPC));
>  		if (error)
>  			goto unwind_usr;
>  	}
> -- 
> 2.17.0
>
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Patch

diff --git a/fs/xfs/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c
index d1b9869bc5fa..2c3557a80e69 100644
--- a/fs/xfs/xfs_trans_dquot.c
+++ b/fs/xfs/xfs_trans_dquot.c
@@ -758,7 +758,8 @@  xfs_trans_reserve_quota_bydquots(
 	}
 
 	if (gdqp) {
-		error = xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos, flags);
+		error = xfs_trans_dqresv(tp, mp, gdqp, nblks, ninos,
+					(flags & ~XFS_QMOPT_ENOSPC));
 		if (error)
 			goto unwind_usr;
 	}