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From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: darrick.wong@oracle.com, david@fromorbit.com, hch@infradead.org
Cc: Amir Goldstein <amir73il@gmail.com>,
	Christoph Hellwig <hch@lst.de>,
	Allison Collins <allison.henderson@oracle.com>,
	linux-xfs@vger.kernel.org, amir73il@gmail.com,
	sandeen@sandeen.net
Subject: [PATCH 03/11] xfs: refactor default quota grace period setting code
Date: Tue, 01 Sep 2020 19:56:48 -0700	[thread overview]
Message-ID: <159901540834.548109.12776778310642675012.stgit@magnolia> (raw)
In-Reply-To: <159901538766.548109.8040337941204954344.stgit@magnolia>

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

Refactor the code that sets the default quota grace period into a helper
function so that we can override the ondisk behavior later.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Allison Collins <allison.henderson@oracle.com>
---
 fs/xfs/libxfs/xfs_format.h |   13 +++++++++++++
 fs/xfs/xfs_dquot.c         |    8 ++++++++
 fs/xfs/xfs_dquot.h         |    1 +
 fs/xfs/xfs_qm_syscalls.c   |    4 ++--
 4 files changed, 24 insertions(+), 2 deletions(-)


diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h
index cb316053d3db..4b68a473b090 100644
--- a/fs/xfs/libxfs/xfs_format.h
+++ b/fs/xfs/libxfs/xfs_format.h
@@ -1209,6 +1209,11 @@ static inline void xfs_dinode_put_rdev(struct xfs_dinode *dip, xfs_dev_t rdev)
  * been reached, and therefore no expiration has been set.  Therefore, the
  * ondisk min and max defined here can be used directly to constrain the incore
  * quota expiration timestamps on a Unix system.
+ *
+ * The grace period for each quota type is stored in the root dquot (id = 0)
+ * and is applied to a non-root dquot when it exceeds the soft or hard limits.
+ * The length of quota grace periods are unsigned 32-bit quantities measured in
+ * units of seconds.  A value of zero means to use the default period.
  */
 
 /*
@@ -1223,6 +1228,14 @@ static inline void xfs_dinode_put_rdev(struct xfs_dinode *dip, xfs_dev_t rdev)
  */
 #define XFS_DQ_LEGACY_EXPIRY_MAX	((int64_t)U32_MAX)
 
+/*
+ * Default quota grace periods, ranging from zero (use the compiled defaults)
+ * to ~136 years.  These are applied to a non-root dquot that has exceeded
+ * either limit.
+ */
+#define XFS_DQ_GRACE_MIN		((int64_t)0)
+#define XFS_DQ_GRACE_MAX		((int64_t)U32_MAX)
+
 /*
  * This is the main portion of the on-disk representation of quota information
  * for a user.  We pad this with some more expansion room to construct the on
diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index f34841f98d44..e63a933413a3 100644
--- a/fs/xfs/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -110,6 +110,14 @@ xfs_dquot_set_timeout(
 					  qi->qi_expiry_max);
 }
 
+/* Set the length of the default grace period. */
+time64_t
+xfs_dquot_set_grace_period(
+	time64_t		grace)
+{
+	return clamp_t(time64_t, grace, XFS_DQ_GRACE_MIN, XFS_DQ_GRACE_MAX);
+}
+
 /*
  * Determine if this quota counter is over either limit and set the quota
  * timers as appropriate.
diff --git a/fs/xfs/xfs_dquot.h b/fs/xfs/xfs_dquot.h
index 0e449101c861..f642884a6834 100644
--- a/fs/xfs/xfs_dquot.h
+++ b/fs/xfs/xfs_dquot.h
@@ -238,5 +238,6 @@ int xfs_qm_dqiterate(struct xfs_mount *mp, xfs_dqtype_t type,
 		xfs_qm_dqiterate_fn iter_fn, void *priv);
 
 time64_t xfs_dquot_set_timeout(struct xfs_mount *mp, time64_t timeout);
+time64_t xfs_dquot_set_grace_period(time64_t grace);
 
 #endif /* __XFS_DQUOT_H__ */
diff --git a/fs/xfs/xfs_qm_syscalls.c b/fs/xfs/xfs_qm_syscalls.c
index 750f775ae915..ca1b57d291dc 100644
--- a/fs/xfs/xfs_qm_syscalls.c
+++ b/fs/xfs/xfs_qm_syscalls.c
@@ -486,8 +486,8 @@ xfs_setqlim_timer(
 {
 	if (qlim) {
 		/* Set the length of the default grace period. */
-		res->timer = timer;
-		qlim->time = timer;
+		res->timer = xfs_dquot_set_grace_period(timer);
+		qlim->time = res->timer;
 	} else {
 		/* Set the grace period expiration on a quota. */
 		res->timer = xfs_dquot_set_timeout(mp, timer);


  parent reply	other threads:[~2020-09-02  3:01 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-02  2:56 [PATCH v6 00/11] xfs: widen timestamps to deal with y2038 Darrick J. Wong
2020-09-02  2:56 ` [PATCH 01/11] xfs: explicitly define inode timestamp range Darrick J. Wong
2020-09-02  2:56 ` [PATCH 02/11] xfs: refactor quota expiration timer modification Darrick J. Wong
2020-09-02  2:56 ` Darrick J. Wong [this message]
2020-09-02  2:56 ` [PATCH 04/11] xfs: refactor quota timestamp coding Darrick J. Wong
2020-09-02  2:57 ` [PATCH 05/11] xfs: move xfs_log_dinode_to_disk to the log recovery code Darrick J. Wong
2020-09-02  2:57 ` [PATCH 06/11] xfs: redefine xfs_timestamp_t Darrick J. Wong
2020-09-02  2:57 ` [PATCH 07/11] xfs: redefine xfs_ictimestamp_t Darrick J. Wong
2020-09-02  2:57 ` [PATCH 08/11] xfs: widen ondisk inode timestamps to deal with y2038+ Darrick J. Wong
2020-09-02  2:57 ` [PATCH 09/11] xfs: widen ondisk quota expiration timestamps to handle y2038+ Darrick J. Wong
2020-09-02  2:57 ` [PATCH 10/11] xfs: trace timestamp limits Darrick J. Wong
2020-09-02  2:57 ` [PATCH 11/11] xfs: enable big timestamps Darrick J. Wong
2020-09-06 21:43 ` [PATCH v6 00/11] xfs: widen timestamps to deal with y2038 Dave Chinner
  -- strict thread matches above, loose matches on Subject: below --
2020-08-31  6:06 [PATCH v5 " Darrick J. Wong
2020-08-31  6:07 ` [PATCH 03/11] xfs: refactor default quota grace period setting code Darrick J. Wong
2020-08-26 22:04 [PATCH v4 00/11] xfs: widen timestamps to deal with y2038 Darrick J. Wong
2020-08-26 22:05 ` [PATCH 03/11] xfs: refactor default quota grace period setting code Darrick J. Wong
2020-08-27  6:44   ` Christoph Hellwig
2020-08-28  4:08   ` Allison Collins
2020-08-21  2:11 [PATCH v3 00/11] xfs: widen timestamps to deal with y2038 Darrick J. Wong
2020-08-21  2:11 ` [PATCH 03/11] xfs: refactor default quota grace period setting code Darrick J. Wong
2020-08-22  7:15   ` Christoph Hellwig
2020-08-24  0:01   ` Dave Chinner
2020-08-17 22:56 [PATCH v2 00/11] xfs: widen timestamps to deal with y2038 Darrick J. Wong
2020-08-17 22:57 ` [PATCH 03/11] xfs: refactor default quota grace period setting code Darrick J. Wong
2020-08-18 10:46   ` Amir Goldstein

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