[PATCH 09/11] xfs: refactor quota timestamp coding

From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: darrick.wong@oracle.com
Cc: linux-xfs@vger.kernel.org, amir73il@gmail.com, sandeen@sandeen.net
Subject: [PATCH 09/11] xfs: refactor quota timestamp coding
Date: Mon, 17 Aug 2020 15:57:45 -0700	[thread overview]
Message-ID: <159770506536.3956827.8490982017014132952.stgit@magnolia> (raw)
In-Reply-To: <159770500809.3956827.8869892960975362931.stgit@magnolia>

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

Refactor quota timestamp encoding and decoding into helper functions so
that we can add extra behavior in the next patch.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 fs/xfs/libxfs/xfs_dquot_buf.c  |   20 ++++++++++++++++++++
 fs/xfs/libxfs/xfs_quota_defs.h |    6 ++++++
 fs/xfs/xfs_dquot.c             |   12 ++++++------
 3 files changed, 32 insertions(+), 6 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_dquot_buf.c b/fs/xfs/libxfs/xfs_dquot_buf.c
index 5a2db00b9d5f..7f5291022b11 100644
--- a/fs/xfs/libxfs/xfs_dquot_buf.c
+++ b/fs/xfs/libxfs/xfs_dquot_buf.c
@@ -288,3 +288,23 @@ const struct xfs_buf_ops xfs_dquot_buf_ra_ops = {
 	.verify_read = xfs_dquot_buf_readahead_verify,
 	.verify_write = xfs_dquot_buf_write_verify,
 };
+
+/* Convert an on-disk timer value into an incore timer value. */
+void
+xfs_dquot_from_disk_timestamp(
+	struct xfs_disk_dquot	*ddq,
+	time64_t		*timer,
+	__be32			dtimer)
+{
+	*timer = be32_to_cpu(dtimer);
+}
+
+/* Convert an incore timer value into an on-disk timer value. */
+void
+xfs_dquot_to_disk_timestamp(
+	struct xfs_dquot	*dqp,
+	__be32			*dtimer,
+	time64_t		timer)
+{
+	*dtimer = cpu_to_be32(timer);
+}
diff --git a/fs/xfs/libxfs/xfs_quota_defs.h b/fs/xfs/libxfs/xfs_quota_defs.h
index 076bdc7037ee..b524059faab5 100644
--- a/fs/xfs/libxfs/xfs_quota_defs.h
+++ b/fs/xfs/libxfs/xfs_quota_defs.h
@@ -143,4 +143,10 @@ extern int xfs_calc_dquots_per_chunk(unsigned int nbblks);
 extern void xfs_dqblk_repair(struct xfs_mount *mp, struct xfs_dqblk *dqb,
 		xfs_dqid_t id, xfs_dqtype_t type);
 
+struct xfs_dquot;
+void xfs_dquot_from_disk_timestamp(struct xfs_disk_dquot *ddq,
+		time64_t *timer, __be32 dtimer);
+void xfs_dquot_to_disk_timestamp(struct xfs_dquot *ddq,
+		__be32 *dtimer, time64_t timer);
+
 #endif	/* __XFS_QUOTA_H__ */
diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index ed3fa6ada0d3..08d497d413b9 100644
--- a/fs/xfs/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -534,9 +534,9 @@ xfs_dquot_from_disk(
 	dqp->q_ino.warnings = be16_to_cpu(ddqp->d_iwarns);
 	dqp->q_rtb.warnings = be16_to_cpu(ddqp->d_rtbwarns);
 
-	dqp->q_blk.timer = be32_to_cpu(ddqp->d_btimer);
-	dqp->q_ino.timer = be32_to_cpu(ddqp->d_itimer);
-	dqp->q_rtb.timer = be32_to_cpu(ddqp->d_rtbtimer);
+	xfs_dquot_from_disk_timestamp(ddqp, &dqp->q_blk.timer, ddqp->d_btimer);
+	xfs_dquot_from_disk_timestamp(ddqp, &dqp->q_ino.timer, ddqp->d_itimer);
+	xfs_dquot_from_disk_timestamp(ddqp, &dqp->q_rtb.timer, ddqp->d_rtbtimer);
 
 	/*
 	 * Reservation counters are defined as reservation plus current usage
@@ -579,9 +579,9 @@ xfs_dquot_to_disk(
 	ddqp->d_iwarns = cpu_to_be16(dqp->q_ino.warnings);
 	ddqp->d_rtbwarns = cpu_to_be16(dqp->q_rtb.warnings);
 
-	ddqp->d_btimer = cpu_to_be32(dqp->q_blk.timer);
-	ddqp->d_itimer = cpu_to_be32(dqp->q_ino.timer);
-	ddqp->d_rtbtimer = cpu_to_be32(dqp->q_rtb.timer);
+	xfs_dquot_to_disk_timestamp(dqp, &ddqp->d_btimer, dqp->q_blk.timer);
+	xfs_dquot_to_disk_timestamp(dqp, &ddqp->d_itimer, dqp->q_ino.timer);
+	xfs_dquot_to_disk_timestamp(dqp, &ddqp->d_rtbtimer, dqp->q_rtb.timer);
 }
 
 /* Allocate and initialize the dquot buffer for this in-core dquot. */

