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-rw-r--r--fs/xfs/scrub/quotacheck.h76
1 files changed, 76 insertions, 0 deletions
diff --git a/fs/xfs/scrub/quotacheck.h b/fs/xfs/scrub/quotacheck.h
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+++ b/fs/xfs/scrub/quotacheck.h
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+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (c) 2020-2024 Oracle. All Rights Reserved.
+ * Author: Darrick J. Wong <djwong@kernel.org>
+ */
+#ifndef __XFS_SCRUB_QUOTACHECK_H__
+#define __XFS_SCRUB_QUOTACHECK_H__
+
+/* Quota counters for live quotacheck. */
+struct xqcheck_dquot {
+ /* block usage count */
+ int64_t bcount;
+
+ /* inode usage count */
+ int64_t icount;
+
+ /* realtime block usage count */
+ int64_t rtbcount;
+
+ /* Record state */
+ unsigned int flags;
+};
+
+/*
+ * This incore dquot record has been written at least once. We never want to
+ * store an xqcheck_dquot that looks uninitialized.
+ */
+#define XQCHECK_DQUOT_WRITTEN (1U << 0)
+
+/* Already checked this dquot. */
+#define XQCHECK_DQUOT_COMPARE_SCANNED (1U << 1)
+
+/* Already repaired this dquot. */
+#define XQCHECK_DQUOT_REPAIR_SCANNED (1U << 2)
+
+/* Live quotacheck control structure. */
+struct xqcheck {
+ struct xfs_scrub *sc;
+
+ /* Shadow dquot counter data. */
+ struct xfarray *ucounts;
+ struct xfarray *gcounts;
+ struct xfarray *pcounts;
+
+ /* Lock protecting quotacheck count observations */
+ struct mutex lock;
+
+ struct xchk_iscan iscan;
+
+ /* Hooks into the quota code. */
+ struct xfs_dqtrx_hook qhook;
+
+ /* Shadow quota delta tracking structure. */
+ struct rhashtable shadow_dquot_acct;
+};
+
+/* Return the incore counter array for a given quota type. */
+static inline struct xfarray *
+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;
+}
+
+#endif /* __XFS_SCRUB_QUOTACHECK_H__ */