73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2018-2024 Oracle. All Rights Reserved.
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* Author: Darrick J. Wong <djwong@kernel.org>
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*/
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#include "xfs.h"
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#include "xfs_fs.h"
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#include "xfs_shared.h"
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#include "xfs_format.h"
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#include "xfs_trans_resv.h"
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#include "xfs_mount.h"
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#include "xfs_defer.h"
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#include "xfs_btree.h"
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#include "xfs_bit.h"
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#include "xfs_log_format.h"
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#include "xfs_trans.h"
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#include "xfs_sb.h"
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#include "xfs_inode.h"
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#include "xfs_alloc.h"
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#include "xfs_ialloc.h"
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#include "xfs_rmap.h"
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#include "xfs_health.h"
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#include "scrub/xfs_scrub.h"
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#include "scrub/scrub.h"
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#include "scrub/common.h"
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#include "scrub/trace.h"
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#include "scrub/repair.h"
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#include "scrub/fscounters.h"
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/*
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* FS Summary Counters
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* ===================
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*
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* We correct errors in the filesystem summary counters by setting them to the
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* values computed during the obligatory scrub phase. However, we must be
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* careful not to allow any other thread to change the counters while we're
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* computing and setting new values. To achieve this, we freeze the
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* filesystem for the whole operation if the REPAIR flag is set. The checking
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* function is stricter when we've frozen the fs.
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*/
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/*
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* Reset the superblock counters. Caller is responsible for freezing the
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* filesystem during the calculation and reset phases.
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*/
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int
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xrep_fscounters(
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struct xfs_scrub *sc)
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{
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struct xfs_mount *mp = sc->mp;
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struct xchk_fscounters *fsc = sc->buf;
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/*
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* Reinitialize the in-core counters from what we computed. We froze
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* the filesystem, so there shouldn't be anyone else trying to modify
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* these counters.
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*/
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if (!fsc->frozen) {
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ASSERT(fsc->frozen);
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return -EFSCORRUPTED;
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}
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trace_xrep_reset_counters(mp, fsc);
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percpu_counter_set(&mp->m_icount, fsc->icount);
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percpu_counter_set(&mp->m_ifree, fsc->ifree);
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percpu_counter_set(&mp->m_fdblocks, fsc->fdblocks);
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percpu_counter_set(&mp->m_frextents, fsc->frextents);
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mp->m_sb.sb_frextents = fsc->frextents;
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return 0;
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}
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