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authorBrian Foster <bfoster@redhat.com>2014-02-07 14:55:54 +1100
committerDave Chinner <david@fromorbit.com>2014-02-07 14:55:54 +1100
commit410b11a675dca827e893f07c3155691eda3b5887 (patch)
treea9a176e4ed1cdc9c272192860ca42fc8e968af92 /fs/xfs/xfs_dquot.c
parentc19ec235352c2a001c9dc7e86acdfd9f2b62150d (diff)
downloadop-kernel-dev-410b11a675dca827e893f07c3155691eda3b5887.zip
op-kernel-dev-410b11a675dca827e893f07c3155691eda3b5887.tar.gz
xfs: use tr_qm_dqalloc log reservation for dquot alloc
The dquot allocation path in xfs_qm_dqread() currently uses the attribute set log reservation, which appears to be incorrect. We have reports of transaction reservation overruns with the current code. E.g., a repeated run of xfstests test generic/270 on a 512b block size fs occassionally produces the following in dmesg: XFS (sdN): xlog_write: reservation summary: trans type = QM_DQALLOC (30) unit res = 7080 bytes current res = -632 bytes total reg = 0 bytes (o/flow = 0 bytes) ophdrs = 0 (ophdr space = 0 bytes) ophdr + reg = 0 bytes num regions = 0 XFS (sdN): xlog_write: reservation ran out. Need to up reservation The dquot allocation case should consist of a write reservation (i.e., we are allocating a range of the internal quota file) plus the size of the actual dquots. We already have a log reservation definition for this operation (tr_qm_dqalloc). Use it in xfs_qm_dqread() and update the log reservation calculation function to use the write res. calculation function rather than reading the assumed to be pre-calculated value directly. Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Jie Liu <jeff.liu@oracle.com> Reviewed-by: Ben Myers <bpm@sgi.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_dquot.c')
-rw-r--r--fs/xfs/xfs_dquot.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index 7aeb4c8..868b19f 100644
--- a/fs/xfs/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -615,7 +615,7 @@ xfs_qm_dqread(
if (flags & XFS_QMOPT_DQALLOC) {
tp = xfs_trans_alloc(mp, XFS_TRANS_QM_DQALLOC);
- error = xfs_trans_reserve(tp, &M_RES(mp)->tr_attrsetm,
+ error = xfs_trans_reserve(tp, &M_RES(mp)->tr_qm_dqalloc,
XFS_QM_DQALLOC_SPACE_RES(mp), 0);
if (error)
goto error1;
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