32080a9b9b
Rebuild the reverse mapping btree from all primary metadata. This first patch establishes the bare mechanics of finding records and putting together a new ondisk tree; more complex pieces are needed to make it work properly. Link: Documentation/filesystems/xfs-online-fsck-design.rst Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de>
76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) 2022-2023 Oracle. All Rights Reserved.
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* Author: Darrick J. Wong <djwong@kernel.org>
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*/
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#ifndef __XFS_SCRUB_NEWBT_H__
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#define __XFS_SCRUB_NEWBT_H__
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struct xfs_alloc_arg;
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struct xrep_newbt_resv {
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/* Link to list of extents that we've reserved. */
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struct list_head list;
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struct xfs_perag *pag;
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/* Auto-freeing this reservation if we don't commit. */
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struct xfs_alloc_autoreap autoreap;
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/* AG block of the extent we reserved. */
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xfs_agblock_t agbno;
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/* Length of the reservation. */
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xfs_extlen_t len;
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/* How much of this reservation has been used. */
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xfs_extlen_t used;
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};
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struct xrep_newbt {
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struct xfs_scrub *sc;
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/* Custom allocation function, or NULL for xfs_alloc_vextent */
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int (*alloc_vextent)(struct xfs_scrub *sc,
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struct xfs_alloc_arg *args,
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xfs_fsblock_t alloc_hint);
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/* List of extents that we've reserved. */
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struct list_head resv_list;
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/* Fake root for new btree. */
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union {
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struct xbtree_afakeroot afake;
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struct xbtree_ifakeroot ifake;
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};
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/* rmap owner of these blocks */
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struct xfs_owner_info oinfo;
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/* btree geometry for the bulk loader */
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struct xfs_btree_bload bload;
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/* Allocation hint */
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xfs_fsblock_t alloc_hint;
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/* per-ag reservation type */
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enum xfs_ag_resv_type resv;
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};
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void xrep_newbt_init_bare(struct xrep_newbt *xnr, struct xfs_scrub *sc);
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void xrep_newbt_init_ag(struct xrep_newbt *xnr, struct xfs_scrub *sc,
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const struct xfs_owner_info *oinfo, xfs_fsblock_t alloc_hint,
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enum xfs_ag_resv_type resv);
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int xrep_newbt_init_inode(struct xrep_newbt *xnr, struct xfs_scrub *sc,
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int whichfork, const struct xfs_owner_info *oinfo);
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int xrep_newbt_alloc_blocks(struct xrep_newbt *xnr, uint64_t nr_blocks);
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int xrep_newbt_add_extent(struct xrep_newbt *xnr, struct xfs_perag *pag,
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xfs_agblock_t agbno, xfs_extlen_t len);
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void xrep_newbt_cancel(struct xrep_newbt *xnr);
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int xrep_newbt_commit(struct xrep_newbt *xnr);
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int xrep_newbt_claim_block(struct xfs_btree_cur *cur, struct xrep_newbt *xnr,
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union xfs_btree_ptr *ptr);
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unsigned int xrep_newbt_unused_blocks(struct xrep_newbt *xnr);
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#endif /* __XFS_SCRUB_NEWBT_H__ */
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