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 bool xrep_will_attempt(struct xfs_scrub *sc);
32 void xrep_failure(struct xfs_mount *mp);
33 int xrep_roll_ag_trans(struct xfs_scrub *sc);
34 int xrep_roll_trans(struct xfs_scrub *sc);
35 int xrep_defer_finish(struct xfs_scrub *sc);
36 bool xrep_ag_has_space(struct xfs_perag *pag, xfs_extlen_t nr_blocks,
37 enum xfs_ag_resv_type type);
38 xfs_extlen_t xrep_calc_ag_resblks(struct xfs_scrub *sc);
39
40 static inline int
xrep_trans_commit(struct xfs_scrub * sc)41 xrep_trans_commit(
42 struct xfs_scrub *sc)
43 {
44 int error = xfs_trans_commit(sc->tp);
45
46 sc->tp = NULL;
47 return error;
48 }
49
50 struct xbitmap;
51 struct xagb_bitmap;
52 struct xfsb_bitmap;
53
54 int xrep_fix_freelist(struct xfs_scrub *sc, bool can_shrink);
55
56 struct xrep_find_ag_btree {
57 /* in: rmap owner of the btree we're looking for */
58 uint64_t rmap_owner;
59
60 /* in: buffer ops */
61 const struct xfs_buf_ops *buf_ops;
62
63 /* in: maximum btree height */
64 unsigned int maxlevels;
65
66 /* out: the highest btree block found and the tree height */
67 xfs_agblock_t root;
68 unsigned int height;
69 };
70
71 int xrep_find_ag_btree_roots(struct xfs_scrub *sc, struct xfs_buf *agf_bp,
72 struct xrep_find_ag_btree *btree_info, struct xfs_buf *agfl_bp);
73
74 #ifdef CONFIG_XFS_QUOTA
75 void xrep_force_quotacheck(struct xfs_scrub *sc, xfs_dqtype_t type);
76 int xrep_ino_dqattach(struct xfs_scrub *sc);
77 #else
78 # define xrep_force_quotacheck(sc, type) ((void)0)
79 # define xrep_ino_dqattach(sc) (0)
80 #endif /* CONFIG_XFS_QUOTA */
81
82 int xrep_ino_ensure_extent_count(struct xfs_scrub *sc, int whichfork,
83 xfs_extnum_t nextents);
84 int xrep_reset_perag_resv(struct xfs_scrub *sc);
85 int xrep_bmap(struct xfs_scrub *sc, int whichfork, bool allow_unwritten);
86 int xrep_metadata_inode_forks(struct xfs_scrub *sc);
87
88 /* Repair setup functions */
89 int xrep_setup_ag_allocbt(struct xfs_scrub *sc);
90
91 struct xfs_imap;
92 int xrep_setup_inode(struct xfs_scrub *sc, const struct xfs_imap *imap);
93
94 void xrep_ag_btcur_init(struct xfs_scrub *sc, struct xchk_ag *sa);
95 int xrep_ag_init(struct xfs_scrub *sc, struct xfs_perag *pag,
96 struct xchk_ag *sa);
97
98 /* Metadata revalidators */
99
100 int xrep_revalidate_allocbt(struct xfs_scrub *sc);
101 int xrep_revalidate_iallocbt(struct xfs_scrub *sc);
102
103 /* Metadata repairers */
104
105 int xrep_probe(struct xfs_scrub *sc);
106 int xrep_superblock(struct xfs_scrub *sc);
107 int xrep_agf(struct xfs_scrub *sc);
108 int xrep_agfl(struct xfs_scrub *sc);
109 int xrep_agi(struct xfs_scrub *sc);
110 int xrep_allocbt(struct xfs_scrub *sc);
111 int xrep_iallocbt(struct xfs_scrub *sc);
112 int xrep_refcountbt(struct xfs_scrub *sc);
113 int xrep_inode(struct xfs_scrub *sc);
114 int xrep_bmap_data(struct xfs_scrub *sc);
115 int xrep_bmap_attr(struct xfs_scrub *sc);
116 int xrep_bmap_cow(struct xfs_scrub *sc);
117
118 #ifdef CONFIG_XFS_RT
119 int xrep_rtbitmap(struct xfs_scrub *sc);
120 #else
121 # define xrep_rtbitmap xrep_notsupported
122 #endif /* CONFIG_XFS_RT */
123
124 #ifdef CONFIG_XFS_QUOTA
125 int xrep_quota(struct xfs_scrub *sc);
126 #else
127 # define xrep_quota xrep_notsupported
128 #endif /* CONFIG_XFS_QUOTA */
129
130 int xrep_reinit_pagf(struct xfs_scrub *sc);
131 int xrep_reinit_pagi(struct xfs_scrub *sc);
132
133 #else
134
135 #define xrep_ino_dqattach(sc) (0)
136 #define xrep_will_attempt(sc) (false)
137
138 static inline int
xrep_attempt(struct xfs_scrub * sc,struct xchk_stats_run * run)139 xrep_attempt(
140 struct xfs_scrub *sc,
141 struct xchk_stats_run *run)
142 {
143 return -EOPNOTSUPP;
144 }
145
xrep_failure(struct xfs_mount * mp)146 static inline void xrep_failure(struct xfs_mount *mp) {}
147
148 static inline xfs_extlen_t
xrep_calc_ag_resblks(struct xfs_scrub * sc)149 xrep_calc_ag_resblks(
150 struct xfs_scrub *sc)
151 {
152 return 0;
153 }
154
155 static inline int
xrep_reset_perag_resv(struct xfs_scrub * sc)156 xrep_reset_perag_resv(
157 struct xfs_scrub *sc)
158 {
159 if (!(sc->flags & XREP_RESET_PERAG_RESV))
160 return 0;
161
162 ASSERT(0);
163 return -EOPNOTSUPP;
164 }
165
166 /* repair setup functions for no-repair */
167 static inline int
xrep_setup_nothing(struct xfs_scrub * sc)168 xrep_setup_nothing(
169 struct xfs_scrub *sc)
170 {
171 return 0;
172 }
173 #define xrep_setup_ag_allocbt xrep_setup_nothing
174
175 #define xrep_setup_inode(sc, imap) ((void)0)
176
177 #define xrep_revalidate_allocbt (NULL)
178 #define xrep_revalidate_iallocbt (NULL)
179
180 #define xrep_probe xrep_notsupported
181 #define xrep_superblock xrep_notsupported
182 #define xrep_agf xrep_notsupported
183 #define xrep_agfl xrep_notsupported
184 #define xrep_agi xrep_notsupported
185 #define xrep_allocbt xrep_notsupported
186 #define xrep_iallocbt xrep_notsupported
187 #define xrep_refcountbt xrep_notsupported
188 #define xrep_inode xrep_notsupported
189 #define xrep_bmap_data xrep_notsupported
190 #define xrep_bmap_attr xrep_notsupported
191 #define xrep_bmap_cow xrep_notsupported
192 #define xrep_rtbitmap xrep_notsupported
193 #define xrep_quota xrep_notsupported
194
195 #endif /* CONFIG_XFS_ONLINE_REPAIR */
196
197 #endif /* __XFS_SCRUB_REPAIR_H__ */
198