fs/xfs/scrub/quotacheck.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (c) 2020-2024 Oracle.  All Rights Reserved.
   4  * Author: Darrick J. Wong <djwong@kernel.org>
   5  */
   6 #ifndef __XFS_SCRUB_QUOTACHECK_H__
   7 #define __XFS_SCRUB_QUOTACHECK_H__
   8
   9 /* Quota counters for live quotacheck. */
  10 struct xqcheck_dquot {
  11         /* block usage count */
  12         int64_t                 bcount;
  13
  14         /* inode usage count */
  15         int64_t                 icount;
  16
  17         /* realtime block usage count */
  18         int64_t                 rtbcount;
  19
  20         /* Record state */
  21         unsigned int            flags;
  22 };
  23
  24 /*
  25  * This incore dquot record has been written at least once.  We never want to
  26  * store an xqcheck_dquot that looks uninitialized.
  27  */
  28 #define XQCHECK_DQUOT_WRITTEN           (1U << 0)
  29
  30 /* Already checked this dquot. */
  31 #define XQCHECK_DQUOT_COMPARE_SCANNED   (1U << 1)
  32
  33 /* Already repaired this dquot. */
  34 #define XQCHECK_DQUOT_REPAIR_SCANNED    (1U << 2)
  35
  36 /* Live quotacheck control structure. */
  37 struct xqcheck {
  38         struct xfs_scrub        *sc;
  39
  40         /* Shadow dquot counter data. */
  41         struct xfarray          *ucounts;
  42         struct xfarray          *gcounts;
  43         struct xfarray          *pcounts;
  44
  45         /* Lock protecting quotacheck count observations */
  46         struct mutex            lock;
  47
  48         struct xchk_iscan       iscan;
  49
  50         /* Hooks into the quota code. */
  51         struct xfs_dqtrx_hook   qhook;
  52
  53         /* Shadow quota delta tracking structure. */
  54         struct rhashtable       shadow_dquot_acct;
  55 };
  56
  57 /* Return the incore counter array for a given quota type. */
  58 static inline struct xfarray *
  59 xqcheck_counters_for(
  60         struct xqcheck          *xqc,
  61         xfs_dqtype_t            dqtype)
  62 {
  63         switch (dqtype) {
  64         case XFS_DQTYPE_USER:
  65                 return xqc->ucounts;
  66         case XFS_DQTYPE_GROUP:
  67                 return xqc->gcounts;
  68         case XFS_DQTYPE_PROJ:
  69                 return xqc->pcounts;
  70         }
  71
  72         ASSERT(0);
  73         return NULL;
  74 }
  75
  76 #endif /* __XFS_SCRUB_QUOTACHECK_H__ */