1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_BKEY_METHODS_H
#define _BCACHEFS_BKEY_METHODS_H
#include "bkey.h"
struct bch_fs;
struct btree;
struct btree_trans;
struct bkey;
enum btree_node_type;
extern const char * const bch2_bkey_types[];
extern const struct bkey_ops bch2_bkey_null_ops;
/*
* key_invalid: checks validity of @k, returns 0 if good or -EINVAL if bad. If
* invalid, entire key will be deleted.
*
* When invalid, error string is returned via @err. @rw indicates whether key is
* being read or written; more aggressive checks can be enabled when rw == WRITE.
*/
struct bkey_ops {
int (*key_invalid)(const struct bch_fs *c, struct bkey_s_c k,
enum bkey_invalid_flags flags, struct printbuf *err);
void (*val_to_text)(struct printbuf *, struct bch_fs *,
struct bkey_s_c);
void (*swab)(struct bkey_s);
bool (*key_normalize)(struct bch_fs *, struct bkey_s);
bool (*key_merge)(struct bch_fs *, struct bkey_s, struct bkey_s_c);
int (*trans_trigger)(struct btree_trans *, enum btree_id, unsigned,
struct bkey_s_c, struct bkey_i *, unsigned);
int (*atomic_trigger)(struct btree_trans *, enum btree_id, unsigned,
struct bkey_s_c, struct bkey_s_c, unsigned);
void (*compat)(enum btree_id id, unsigned version,
unsigned big_endian, int write,
struct bkey_s);
/* Size of value type when first created: */
unsigned min_val_size;
};
extern const struct bkey_ops bch2_bkey_ops[];
static inline const struct bkey_ops *bch2_bkey_type_ops(enum bch_bkey_type type)
{
return likely(type < KEY_TYPE_MAX)
? &bch2_bkey_ops[type]
: &bch2_bkey_null_ops;
}
int bch2_bkey_val_invalid(struct bch_fs *, struct bkey_s_c,
enum bkey_invalid_flags, struct printbuf *);
int __bch2_bkey_invalid(struct bch_fs *, struct bkey_s_c, enum btree_node_type,
enum bkey_invalid_flags, struct printbuf *);
int bch2_bkey_invalid(struct bch_fs *, struct bkey_s_c, enum btree_node_type,
enum bkey_invalid_flags, struct printbuf *);
int bch2_bkey_in_btree_node(struct btree *, struct bkey_s_c, struct printbuf *);
void bch2_bpos_to_text(struct printbuf *, struct bpos);
void bch2_bkey_to_text(struct printbuf *, const struct bkey *);
void bch2_val_to_text(struct printbuf *, struct bch_fs *,
struct bkey_s_c);
void bch2_bkey_val_to_text(struct printbuf *, struct bch_fs *,
struct bkey_s_c);
void bch2_bkey_swab_val(struct bkey_s);
bool bch2_bkey_normalize(struct bch_fs *, struct bkey_s);
static inline bool bch2_bkey_maybe_mergable(const struct bkey *l, const struct bkey *r)
{
return l->type == r->type &&
!bversion_cmp(l->version, r->version) &&
bpos_eq(l->p, bkey_start_pos(r));
}
bool bch2_bkey_merge(struct bch_fs *, struct bkey_s, struct bkey_s_c);
static inline int bch2_mark_key(struct btree_trans *trans,
enum btree_id btree, unsigned level,
struct bkey_s_c old, struct bkey_s_c new,
unsigned flags)
{
const struct bkey_ops *ops = bch2_bkey_type_ops(old.k->type ?: new.k->type);
return ops->atomic_trigger
? ops->atomic_trigger(trans, btree, level, old, new, flags)
: 0;
}
enum btree_update_flags {
__BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE = __BTREE_ITER_FLAGS_END,
__BTREE_UPDATE_NOJOURNAL,
__BTREE_UPDATE_PREJOURNAL,
__BTREE_UPDATE_KEY_CACHE_RECLAIM,
__BTREE_TRIGGER_NORUN, /* Don't run triggers at all */
__BTREE_TRIGGER_INSERT,
__BTREE_TRIGGER_OVERWRITE,
__BTREE_TRIGGER_GC,
__BTREE_TRIGGER_BUCKET_INVALIDATE,
__BTREE_TRIGGER_NOATOMIC,
};
#define BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE (1U << __BTREE_UPDATE_INTERNAL_SNAPSHOT_NODE)
#define BTREE_UPDATE_NOJOURNAL (1U << __BTREE_UPDATE_NOJOURNAL)
#define BTREE_UPDATE_PREJOURNAL (1U << __BTREE_UPDATE_PREJOURNAL)
#define BTREE_UPDATE_KEY_CACHE_RECLAIM (1U << __BTREE_UPDATE_KEY_CACHE_RECLAIM)
#define BTREE_TRIGGER_NORUN (1U << __BTREE_TRIGGER_NORUN)
#define BTREE_TRIGGER_INSERT (1U << __BTREE_TRIGGER_INSERT)
#define BTREE_TRIGGER_OVERWRITE (1U << __BTREE_TRIGGER_OVERWRITE)
#define BTREE_TRIGGER_GC (1U << __BTREE_TRIGGER_GC)
#define BTREE_TRIGGER_BUCKET_INVALIDATE (1U << __BTREE_TRIGGER_BUCKET_INVALIDATE)
#define BTREE_TRIGGER_NOATOMIC (1U << __BTREE_TRIGGER_NOATOMIC)
#define BTREE_TRIGGER_WANTS_OLD_AND_NEW \
((1U << KEY_TYPE_alloc)| \
(1U << KEY_TYPE_alloc_v2)| \
(1U << KEY_TYPE_alloc_v3)| \
(1U << KEY_TYPE_alloc_v4)| \
(1U << KEY_TYPE_stripe)| \
(1U << KEY_TYPE_inode)| \
(1U << KEY_TYPE_inode_v2)| \
(1U << KEY_TYPE_snapshot))
static inline int bch2_trans_mark_key(struct btree_trans *trans,
enum btree_id btree_id, unsigned level,
struct bkey_s_c old, struct bkey_i *new,
unsigned flags)
{
const struct bkey_ops *ops = bch2_bkey_type_ops(old.k->type ?: new->k.type);
return ops->trans_trigger
? ops->trans_trigger(trans, btree_id, level, old, new, flags)
: 0;
}
static inline int bch2_trans_mark_old(struct btree_trans *trans,
enum btree_id btree_id, unsigned level,
struct bkey_s_c old, unsigned flags)
{
struct bkey_i deleted;
bkey_init(&deleted.k);
deleted.k.p = old.k->p;
return bch2_trans_mark_key(trans, btree_id, level, old, &deleted,
BTREE_TRIGGER_OVERWRITE|flags);
}
static inline int bch2_trans_mark_new(struct btree_trans *trans,
enum btree_id btree_id, unsigned level,
struct bkey_i *new, unsigned flags)
{
struct bkey_i deleted;
bkey_init(&deleted.k);
deleted.k.p = new->k.p;
return bch2_trans_mark_key(trans, btree_id, level, bkey_i_to_s_c(&deleted), new,
BTREE_TRIGGER_INSERT|flags);
}
void bch2_bkey_renumber(enum btree_node_type, struct bkey_packed *, int);
void __bch2_bkey_compat(unsigned, enum btree_id, unsigned, unsigned,
int, struct bkey_format *, struct bkey_packed *);
static inline void bch2_bkey_compat(unsigned level, enum btree_id btree_id,
unsigned version, unsigned big_endian,
int write,
struct bkey_format *f,
struct bkey_packed *k)
{
if (version < bcachefs_metadata_version_current ||
big_endian != CPU_BIG_ENDIAN)
__bch2_bkey_compat(level, btree_id, version,
big_endian, write, f, k);
}
#endif /* _BCACHEFS_BKEY_METHODS_H */
|
