1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2018-2023 Oracle. All Rights Reserved.
4 * Author: Darrick J. Wong <djwong@kernel.org>
5 */
6 #ifndef __XFS_SCRUB_REPAIR_H__
7 #define __XFS_SCRUB_REPAIR_H__
8
9 #include "xfs_quota_defs.h"
10
11 struct xchk_stats_run;
12
xrep_notsupported(struct xfs_scrub * sc)13 static inline int xrep_notsupported(struct xfs_scrub *sc)
14 {
15 return -EOPNOTSUPP;
16 }
17
18 #ifdef CONFIG_XFS_ONLINE_REPAIR
19
20 /*
21 * This is the maximum number of deferred extent freeing item extents (EFIs)
22 * that we'll attach to a transaction without rolling the transaction to avoid
23 * overrunning a tr_itruncate reservation.
24 */
25 #define XREP_MAX_ITRUNCATE_EFIS (128)
26
27
28 /* Repair helpers */
29
30 int xrep_attempt(struct xfs_scrub *sc, struct xchk_stats_run *run);
31 void xrep_failure(struct xfs_mount *mp);
32 int xrep_roll_ag_trans(struct xfs_scrub *sc);
33 int xrep_defer_finish(struct xfs_scrub *sc);
34 bool xrep_ag_has_space(struct xfs_perag *pag, xfs_extlen_t nr_blocks,
35 enum xfs_ag_resv_type type);
36 xfs_extlen_t xrep_calc_ag_resblks(struct xfs_scrub *sc);
37
38 struct xbitmap;
39 struct xagb_bitmap;
40
41 int xrep_fix_freelist(struct xfs_scrub *sc, bool can_shrink);
42
43 struct xrep_find_ag_btree {
44 /* in: rmap owner of the btree we're looking for */
45 uint64_t rmap_owner;
46
47 /* in: buffer ops */
48 const struct xfs_buf_ops *buf_ops;
49
50 /* in: maximum btree height */
51 unsigned int maxlevels;
52
53 /* out: the highest btree block found and the tree height */
54 xfs_agblock_t root;
55 unsigned int height;
56 };
57
58 int xrep_find_ag_btree_roots(struct xfs_scrub *sc, struct xfs_buf *agf_bp,
59 struct xrep_find_ag_btree *btree_info, struct xfs_buf *agfl_bp);
60 void xrep_force_quotacheck(struct xfs_scrub *sc, xfs_dqtype_t type);
61 int xrep_ino_dqattach(struct xfs_scrub *sc);
62
63 /* Metadata repairers */
64
65 int xrep_probe(struct xfs_scrub *sc);
66 int xrep_superblock(struct xfs_scrub *sc);
67 int xrep_agf(struct xfs_scrub *sc);
68 int xrep_agfl(struct xfs_scrub *sc);
69 int xrep_agi(struct xfs_scrub *sc);
70
71 #else
72
73 static inline int
xrep_attempt(struct xfs_scrub * sc,struct xchk_stats_run * run)74 xrep_attempt(
75 struct xfs_scrub *sc,
76 struct xchk_stats_run *run)
77 {
78 return -EOPNOTSUPP;
79 }
80
xrep_failure(struct xfs_mount * mp)81 static inline void xrep_failure(struct xfs_mount *mp) {}
82
83 static inline xfs_extlen_t
xrep_calc_ag_resblks(struct xfs_scrub * sc)84 xrep_calc_ag_resblks(
85 struct xfs_scrub *sc)
86 {
87 return 0;
88 }
89
90 #define xrep_probe xrep_notsupported
91 #define xrep_superblock xrep_notsupported
92 #define xrep_agf xrep_notsupported
93 #define xrep_agfl xrep_notsupported
94 #define xrep_agi xrep_notsupported
95
96 #endif /* CONFIG_XFS_ONLINE_REPAIR */
97
98 #endif /* __XFS_SCRUB_REPAIR_H__ */
99