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35537f25d2
Make the free rt extent count a part of the lazy sb counters when the realtime groups feature is enabled. This is possible because the patch to recompute frextents from the rtbitmap during log recovery predates the code adding rtgroup support, hence we know that the value will always be correct during runtime. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
84 lines
2.4 KiB
C
84 lines
2.4 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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/*
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* Online repair is only supported on v5 file systems, which require
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* lazy sb counters and thus no update of sb_fdblocks here. But
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* sb_frextents only uses a lazy counter with rtgroups, and thus needs
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* to be updated directly here otherwise. And for that we need to keep
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* track of the delalloc reservations separately, as they are are
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* subtracted from m_frextents, but not included in sb_frextents.
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*/
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percpu_counter_set(&mp->m_frextents,
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fsc->frextents - fsc->frextents_delayed);
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if (!xfs_has_rtgroups(mp))
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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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