From 410b11a675dca827e893f07c3155691eda3b5887 Mon Sep 17 00:00:00 2001 From: Brian Foster Date: Fri, 7 Feb 2014 14:55:54 +1100 Subject: 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 Reviewed-by: Jie Liu Reviewed-by: Ben Myers Signed-off-by: Dave Chinner --- fs/xfs/xfs_dquot.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/xfs/xfs_dquot.c') diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c index 7aeb4c895b32..868b19f096bf 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; -- cgit v1.2.3