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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2020 Oracle. All Rights Reserved.
* Author: Darrick J. Wong <darrick.wong@oracle.com>
*/
#ifndef __XFS_SCRUB_QUOTACHECK_H__
#define __XFS_SCRUB_QUOTACHECK_H__
/*
* Quota counters for live quotacheck. Pad the structure to 32 bytes to avoid
* a weird interaction between sparse xfbma arrays and shmem files, and so that
* we never mistake a zero-count xchk_dquot for a null record.
*/
struct xqcheck_dquot {
/* block usage count */
int64_t bcount;
/* inode usage count */
int64_t icount;
/* realtime block usage count */
int64_t rtbcount;
};
/* Live quotacheck control structure. */
struct xqcheck {
struct xfs_scrub *sc;
/* Shadow dquot counter data. */
struct xfbma *ucounts;
struct xfbma *gcounts;
struct xfbma *pcounts;
/* Last inode scanned by live quotacheck. */
xfs_ino_t last_ino;
/* Hooks into the quota code. */
struct notifier_block mod_hook;
struct notifier_block apply_hook;
/* Lock for the data used to capture live quota counter updates. */
struct mutex lock;
/* Shadow quota delta tracking structure. */
struct rhashtable shadow_dquot_acct;
/* Something failed during live tracking. */
bool hook_dead;
};
/* Return the incore counter array for a given quota type. */
static inline struct xfbma *
xqcheck_counters_for(
struct xqcheck *xqc,
xfs_dqtype_t dqtype)
{
switch (dqtype) {
case XFS_DQTYPE_USER:
return xqc->ucounts;
case XFS_DQTYPE_GROUP:
return xqc->gcounts;
case XFS_DQTYPE_PROJ:
return xqc->pcounts;
}
ASSERT(0);
return NULL;
}
int xqcheck_get_shadow_dquot(struct xfbma *counts, xfs_dqid_t id,
struct xqcheck_dquot *xcdq);
#endif /* __XFS_SCRUB_QUOTACHECK_H__ */
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