linux/fs/xfs/scrub/alloc.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (C) 2017-2023 Oracle.  All Rights Reserved.
 * Author: Darrick J. Wong <[email protected]>
 */
#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_log_format.h"
#include "xfs_trans.h"
#include "xfs_btree.h"
#include "xfs_alloc.h"
#include "xfs_rmap.h"
#include "xfs_ag.h"
#include "scrub/scrub.h"
#include "scrub/common.h"
#include "scrub/btree.h"
#include "scrub/repair.h"

/*
 * Set us up to scrub free space btrees.
 */
int
xchk_setup_ag_allocbt(
	struct xfs_scrub	*sc)
{ … }

/* Free space btree scrubber. */

struct xchk_alloc { … };

/*
 * Ensure there's a corresponding cntbt/bnobt record matching this
 * bnobt/cntbt record, respectively.
 */
STATIC void
xchk_allocbt_xref_other(
	struct xfs_scrub	*sc,
	xfs_agblock_t		agbno,
	xfs_extlen_t		len)
{ … }

/* Cross-reference with the other btrees. */
STATIC void
xchk_allocbt_xref(
	struct xfs_scrub	*sc,
	const struct xfs_alloc_rec_incore *irec)
{ … }

/* Flag failures for records that could be merged. */
STATIC void
xchk_allocbt_mergeable(
	struct xchk_btree	*bs,
	struct xchk_alloc	*ca,
	const struct xfs_alloc_rec_incore *irec)
{ … }

/* Scrub a bnobt/cntbt record. */
STATIC int
xchk_allocbt_rec(
	struct xchk_btree		*bs,
	const union xfs_btree_rec	*rec)
{ … }

/* Scrub one of the freespace btrees for some AG. */
int
xchk_allocbt(
	struct xfs_scrub	*sc)
{ … }

/* xref check that the extent is not free */
void
xchk_xref_is_used_space(
	struct xfs_scrub	*sc,
	xfs_agblock_t		agbno,
	xfs_extlen_t		len)
{ … }