]> git.sesse.net Git - bcachefs-tools-debian/blob - libbcachefs/bkey_buf.h
Disable pristine-tar option in gbp.conf, since there is no pristine-tar branch.
[bcachefs-tools-debian] / libbcachefs / bkey_buf.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BCACHEFS_BKEY_BUF_H
3 #define _BCACHEFS_BKEY_BUF_H
4
5 #include "bcachefs.h"
6 #include "bkey.h"
7
8 struct bkey_buf {
9         struct bkey_i   *k;
10         u64             onstack[12];
11 };
12
13 static inline void bch2_bkey_buf_realloc(struct bkey_buf *s,
14                                          struct bch_fs *c, unsigned u64s)
15 {
16         if (s->k == (void *) s->onstack &&
17             u64s > ARRAY_SIZE(s->onstack)) {
18                 s->k = mempool_alloc(&c->large_bkey_pool, GFP_NOFS);
19                 memcpy(s->k, s->onstack, sizeof(s->onstack));
20         }
21 }
22
23 static inline void bch2_bkey_buf_reassemble(struct bkey_buf *s,
24                                             struct bch_fs *c,
25                                             struct bkey_s_c k)
26 {
27         bch2_bkey_buf_realloc(s, c, k.k->u64s);
28         bkey_reassemble(s->k, k);
29 }
30
31 static inline void bch2_bkey_buf_copy(struct bkey_buf *s,
32                                       struct bch_fs *c,
33                                       struct bkey_i *src)
34 {
35         bch2_bkey_buf_realloc(s, c, src->k.u64s);
36         bkey_copy(s->k, src);
37 }
38
39 static inline void bch2_bkey_buf_unpack(struct bkey_buf *s,
40                                         struct bch_fs *c,
41                                         struct btree *b,
42                                         struct bkey_packed *src)
43 {
44         bch2_bkey_buf_realloc(s, c, BKEY_U64s +
45                               bkeyp_val_u64s(&b->format, src));
46         bch2_bkey_unpack(b, s->k, src);
47 }
48
49 static inline void bch2_bkey_buf_init(struct bkey_buf *s)
50 {
51         s->k = (void *) s->onstack;
52 }
53
54 static inline void bch2_bkey_buf_exit(struct bkey_buf *s, struct bch_fs *c)
55 {
56         if (s->k != (void *) s->onstack)
57                 mempool_free(s->k, &c->large_bkey_pool);
58         s->k = NULL;
59 }
60
61 #endif /* _BCACHEFS_BKEY_BUF_H */