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eae5db476f
Reorganize struct xchk_btree so that we can dynamically size the context structure to fit the type of btree cursor that we have. This will enable us to use memory more efficiently once we start adding very tall btree types. Right-size the lastkey array to match the number of *node* levels in the tree so that we stop wasting space. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Dave Chinner <dchinner@redhat.com>
63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2017 Oracle. All Rights Reserved.
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* Author: Darrick J. Wong <darrick.wong@oracle.com>
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*/
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#ifndef __XFS_SCRUB_BTREE_H__
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#define __XFS_SCRUB_BTREE_H__
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/* btree scrub */
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/* Check for btree operation errors. */
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bool xchk_btree_process_error(struct xfs_scrub *sc,
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struct xfs_btree_cur *cur, int level, int *error);
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/* Check for btree xref operation errors. */
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bool xchk_btree_xref_process_error(struct xfs_scrub *sc,
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struct xfs_btree_cur *cur, int level, int *error);
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/* Check for btree corruption. */
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void xchk_btree_set_corrupt(struct xfs_scrub *sc,
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struct xfs_btree_cur *cur, int level);
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/* Check for btree xref discrepancies. */
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void xchk_btree_xref_set_corrupt(struct xfs_scrub *sc,
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struct xfs_btree_cur *cur, int level);
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struct xchk_btree;
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typedef int (*xchk_btree_rec_fn)(
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struct xchk_btree *bs,
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const union xfs_btree_rec *rec);
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struct xchk_btree {
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/* caller-provided scrub state */
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struct xfs_scrub *sc;
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struct xfs_btree_cur *cur;
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xchk_btree_rec_fn scrub_rec;
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const struct xfs_owner_info *oinfo;
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void *private;
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/* internal scrub state */
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union xfs_btree_rec lastrec;
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struct list_head to_check;
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/* this element must come last! */
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union xfs_btree_key lastkey[];
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};
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/*
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* Calculate the size of a xchk_btree structure. There are nlevels-1 slots for
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* keys because we track leaf records separately in lastrec.
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*/
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static inline size_t
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xchk_btree_sizeof(unsigned int nlevels)
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{
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return struct_size((struct xchk_btree *)NULL, lastkey, nlevels - 1);
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}
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int xchk_btree(struct xfs_scrub *sc, struct xfs_btree_cur *cur,
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xchk_btree_rec_fn scrub_fn, const struct xfs_owner_info *oinfo,
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void *private);
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#endif /* __XFS_SCRUB_BTREE_H__ */
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