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xfs: refactor default quota grace period setting code

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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>
This commit is contained in:
Darrick J. Wong 2020-08-17 09:58:42 -07:00
parent 11d8a91902
commit ccc8e771aa
4 changed files with 24 additions and 2 deletions
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13
fs/xfs/libxfs/xfs_format.h
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@ -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

8
fs/xfs/xfs_dquot.c
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@ -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.

1
fs/xfs/xfs_dquot.h
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@ -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__ */

4
fs/xfs/xfs_qm_syscalls.c
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@ -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);