[PATCH 04/14] xfs: fix quota timer inactivation

From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: darrick.wong@oracle.com
Cc: linux-xfs@vger.kernel.org
Subject: [PATCH 04/14] xfs: fix quota timer inactivation
Date: Tue, 31 Dec 2019 17:11:27 -0800	[thread overview]
Message-ID: <157784108755.1364230.10581541534925642174.stgit@magnolia> (raw)
In-Reply-To: <157784106066.1364230.569420432829402226.stgit@magnolia>

From: Darrick J. Wong <darrick.wong@oracle.com>

We need to take the inactivated inodes' resource usage into account when
we decide if we're actually over quota.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 fs/xfs/xfs_dquot.c       |   28 +++++++++++++++++-----------
 fs/xfs/xfs_dquot.h       |    2 +-
 fs/xfs/xfs_qm.c          |    2 +-
 fs/xfs/xfs_qm_syscalls.c |    2 +-
 fs/xfs/xfs_trans_dquot.c |    2 +-
 5 files changed, 21 insertions(+), 15 deletions(-)

diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index 54e7fdcd1d4d..ae7bb6361a99 100644
--- a/fs/xfs/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -101,13 +101,16 @@ xfs_qm_adjust_dqlimits(
 
 static inline bool
 xfs_quota_exceeded(
-	const __be64		*count,
+	const __be64		*dcount,
+	xfs_qcnt_t		ina_count,
 	const __be64		*softlimit,
-	const __be64		*hardlimit) {
+	const __be64		*hardlimit)
+{
+	uint64_t		count = be64_to_cpup(dcount) - ina_count;
 
-	if (*softlimit && be64_to_cpup(count) > be64_to_cpup(softlimit))
+	if (*softlimit && count > be64_to_cpup(softlimit))
 		return true;
-	return *hardlimit && be64_to_cpup(count) > be64_to_cpup(hardlimit);
+	return *hardlimit && count > be64_to_cpup(hardlimit);
 }
 
 /*
@@ -126,8 +129,9 @@ xfs_quota_exceeded(
 void
 xfs_qm_adjust_dqtimers(
 	struct xfs_mount	*mp,
-	struct xfs_disk_dquot	*d)
+	struct xfs_dquot	*dqp)
 {
+	struct xfs_disk_dquot	*d = &dqp->q_core;
 	bool			over;
 
 	ASSERT(d->d_id);
@@ -144,8 +148,8 @@ xfs_qm_adjust_dqtimers(
 		       be64_to_cpu(d->d_rtb_hardlimit));
 #endif
 
-	over = xfs_quota_exceeded(&d->d_bcount, &d->d_blk_softlimit,
-			&d->d_blk_hardlimit);
+	over = xfs_quota_exceeded(&d->d_bcount, dqp->q_ina_bcount,
+			&d->d_blk_softlimit, &d->d_blk_hardlimit);
 	if (!d->d_btimer) {
 		if (over) {
 			d->d_btimer = cpu_to_be32(get_seconds() +
@@ -159,8 +163,8 @@ xfs_qm_adjust_dqtimers(
 		}
 	}
 
-	over = xfs_quota_exceeded(&d->d_icount, &d->d_ino_softlimit,
-			&d->d_ino_hardlimit);
+	over = xfs_quota_exceeded(&d->d_icount, dqp->q_ina_icount,
+			&d->d_ino_softlimit, &d->d_ino_hardlimit);
 	if (!d->d_itimer) {
 		if (over) {
 			d->d_itimer = cpu_to_be32(get_seconds() +
@@ -174,8 +178,8 @@ xfs_qm_adjust_dqtimers(
 		}
 	}
 
-	over = xfs_quota_exceeded(&d->d_rtbcount, &d->d_rtb_softlimit,
-			&d->d_rtb_hardlimit);
+	over = xfs_quota_exceeded(&d->d_rtbcount, dqp->q_ina_rtbcount,
+			&d->d_rtb_softlimit, &d->d_rtb_hardlimit);
 	if (!d->d_rtbtimer) {
 		if (over) {
 			d->d_rtbtimer = cpu_to_be32(get_seconds() +
@@ -1279,6 +1283,8 @@ xfs_dquot_adjust(
 	dqp->q_ina_icount += inodes;
 	dqp->q_ina_bcount += dblocks;
 	dqp->q_ina_rtbcount += rblocks;
+	if (dqp->q_core.d_id)
+		xfs_qm_adjust_dqtimers(dqp->q_mount, dqp);
 	xfs_dqunlock(dqp);
 }
 
diff --git a/fs/xfs/xfs_dquot.h b/fs/xfs/xfs_dquot.h
index 0d58f4ae8349..d924da98f66a 100644
--- a/fs/xfs/xfs_dquot.h
+++ b/fs/xfs/xfs_dquot.h
@@ -164,7 +164,7 @@ void		xfs_qm_dqdestroy(struct xfs_dquot *dqp);
 int		xfs_qm_dqflush(struct xfs_dquot *dqp, struct xfs_buf **bpp);
 void		xfs_qm_dqunpin_wait(struct xfs_dquot *dqp);
 void		xfs_qm_adjust_dqtimers(struct xfs_mount *mp,
-						struct xfs_disk_dquot *d);
+				       struct xfs_dquot *dqp);
 void		xfs_qm_adjust_dqlimits(struct xfs_mount *mp,
 						struct xfs_dquot *d);
 xfs_dqid_t	xfs_qm_id_for_quotatype(struct xfs_inode *ip, uint type);
diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
index d4a9765c9502..268e028c9ec8 100644
--- a/fs/xfs/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -1141,7 +1141,7 @@ xfs_qm_quotacheck_dqadjust(
 	 */
 	if (dqp->q_core.d_id) {
 		xfs_qm_adjust_dqlimits(mp, dqp);
-		xfs_qm_adjust_dqtimers(mp, &dqp->q_core);
+		xfs_qm_adjust_dqtimers(mp, dqp);
 	}
 
 	dqp->dq_flags |= XFS_DQ_DIRTY;
diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c
index 43ba4e6b5e22..74220948a360 100644
--- a/fs/xfs/xfs_qm_syscalls.c
+++ b/fs/xfs/xfs_qm_syscalls.c
@@ -593,7 +593,7 @@ xfs_qm_scall_setqlim(
 		 * is on or off. We don't really want to bother with iterating
 		 * over all ondisk dquots and turning the timers on/off.
 		 */
-		xfs_qm_adjust_dqtimers(mp, ddq);
+		xfs_qm_adjust_dqtimers(mp, dqp);
 	}
 	dqp->dq_flags |= XFS_DQ_DIRTY;
 	xfs_trans_log_dquot(tp, dqp);
diff --git a/fs/xfs/xfs_trans_dquot.c b/fs/xfs/xfs_trans_dquot.c
index a6fe2d8dc40f..248cfc369efc 100644
--- a/fs/xfs/xfs_trans_dquot.c
+++ b/fs/xfs/xfs_trans_dquot.c
@@ -388,7 +388,7 @@ xfs_trans_apply_dquot_deltas(
 			 */
 			if (d->d_id) {
 				xfs_qm_adjust_dqlimits(tp->t_mountp, dqp);
-				xfs_qm_adjust_dqtimers(tp->t_mountp, d);
+				xfs_qm_adjust_dqtimers(tp->t_mountp, dqp);
 			}
 
 			dqp->dq_flags |= XFS_DQ_DIRTY;

