diff options
| author | Eric Sandeen <sandeen@redhat.com> | 2020-05-21 13:06:59 -0700 |
|---|---|---|
| committer | Darrick J. Wong <darrick.wong@oracle.com> | 2020-05-27 08:49:25 -0700 |
| commit | dcf1ccc99e6db06a3a3cc9f72161f7d084a38d40 (patch) | |
| tree | 71bf913633666d80519f4ab910475b39ee3edd79 /fs/xfs/xfs_qm.c | |
| parent | c8d329f311c4d3d8f8e6dc5897ec235e37f48ae8 (diff) | |
xfs: always return -ENOSPC on project quota reservation failure
XFS project quota treats project hierarchies as "mini filesysems" and
so rather than -EDQUOT, the intent is to return -ENOSPC when a quota
reservation fails, but this behavior is not consistent.
The only place we make a decision between -EDQUOT and -ENOSPC
returns based on quota type is in xfs_trans_dqresv().
This behavior is currently controlled by whether or not the
XFS_QMOPT_ENOSPC flag gets passed into the quota reservation. However,
its use is not consistent; paths such as xfs_create() and xfs_symlink()
don't set the flag, so a reservation failure will return -EDQUOT for
project quota reservation failures rather than -ENOSPC for these sorts
of operations, even for project quota:
# mkdir mnt/project
# xfs_quota -x -c "project -s -p mnt/project 42" mnt
# xfs_quota -x -c 'limit -p isoft=2 ihard=3 42' mnt
# touch mnt/project/file{1,2,3}
touch: cannot touch ‘mnt/project/file3’: Disk quota exceeded
We can make this consistent by not requiring the flag to be set at the
top of the callchain; instead we can simply test whether we are
reserving a project quota with XFS_QM_ISPDQ in xfs_trans_dqresv and if
so, return -ENOSPC for that failure. This removes the need for the
XFS_QMOPT_ENOSPC altogether and simplifies the code a fair bit.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs/xfs/xfs_qm.c')
| -rw-r--r-- | fs/xfs/xfs_qm.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c index fc93f88a9926..27a907645631 100644 --- a/fs/xfs/xfs_qm.c +++ b/fs/xfs/xfs_qm.c @@ -1808,7 +1808,7 @@ xfs_qm_vop_chown_reserve( { struct xfs_mount *mp = ip->i_mount; uint64_t delblks; - unsigned int blkflags, prjflags = 0; + unsigned int blkflags; struct xfs_dquot *udq_unres = NULL; struct xfs_dquot *gdq_unres = NULL; struct xfs_dquot *pdq_unres = NULL; @@ -1849,7 +1849,6 @@ xfs_qm_vop_chown_reserve( if (XFS_IS_PQUOTA_ON(ip->i_mount) && pdqp && ip->i_d.di_projid != be32_to_cpu(pdqp->q_core.d_id)) { - prjflags = XFS_QMOPT_ENOSPC; pdq_delblks = pdqp; if (delblks) { ASSERT(ip->i_pdquot); @@ -1859,8 +1858,7 @@ xfs_qm_vop_chown_reserve( error = xfs_trans_reserve_quota_bydquots(tp, ip->i_mount, udq_delblks, gdq_delblks, pdq_delblks, - ip->i_d.di_nblocks, 1, - flags | blkflags | prjflags); + ip->i_d.di_nblocks, 1, flags | blkflags); if (error) return error; @@ -1878,8 +1876,7 @@ xfs_qm_vop_chown_reserve( ASSERT(udq_unres || gdq_unres || pdq_unres); error = xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, udq_delblks, gdq_delblks, pdq_delblks, - (xfs_qcnt_t)delblks, 0, - flags | blkflags | prjflags); + (xfs_qcnt_t)delblks, 0, flags | blkflags); if (error) return error; xfs_trans_reserve_quota_bydquots(NULL, ip->i_mount, |