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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2021 Oracle. All Rights Reserved.
* Author: Darrick J. Wong <djwong@kernel.org>
*/
#include "xfs.h"
#include "xfs_fs.h"
#include "xfs_shared.h"
#include "xfs_format.h"
#include "xfs_trans_resv.h"
#include "xfs_mount.h"
#include "xfs_defer.h"
#include "xfs_btree.h"
#include "xfs_bit.h"
#include "xfs_log_format.h"
#include "xfs_trans.h"
#include "xfs_sb.h"
#include "xfs_inode.h"
#include "xfs_alloc.h"
#include "xfs_ialloc.h"
#include "xfs_rmap.h"
#include "xfs_health.h"
#include "scrub/xfs_scrub.h"
#include "scrub/scrub.h"
#include "scrub/common.h"
#include "scrub/trace.h"
#include "scrub/repair.h"
/*
* FS Summary Counters
* ===================
*
* We correct errors in the filesystem summary counters by setting them to the
* values computed during the obligatory scrub phase. However, we must be
* careful not to allow any other thread to change the counters while we're
* computing and setting new values. To achieve this, we freeze the
* filesystem for the whole operation if the REPAIR flag is set. The checking
* function is stricter when we've frozen the fs.
*/
/*
* Reset the superblock counters. Caller is responsible for freezing the
* filesystem during the calculation and reset phases.
*/
int
xrep_fscounters(
struct xfs_scrub *sc)
{
struct xfs_mount *mp = sc->mp;
struct xchk_fscounters *fsc = sc->buf;
/*
* Reinitialize the in-core counters from what we computed. We froze
* the filesystem, so there shouldn't be anyone else trying to modify
* these counters.
*/
ASSERT(sc->flags & XCHK_FS_FROZEN);
percpu_counter_set(&mp->m_icount, fsc->icount);
percpu_counter_set(&mp->m_ifree, fsc->ifree);
percpu_counter_set(&mp->m_fdblocks, fsc->fdblocks);
return 0;
}
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