[PATCH 11/26] xfs: refactor default quota grace period setting code

Darrick J. Wong
2020-10-26T23:35:28Z

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

Source kernel commit: ccc8e771aa7a80eb047fc263780816ca76dd02a6

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>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
libxfs/xfs_format.h | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/libxfs/xfs_format.h b/libxfs/xfs_format.h
index afc068944be9..a5bf27afdd44 100644
--- a/libxfs/xfs_format.h
+++ b/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