1 | // SPDX-License-Identifier: GPL-2.0 |
2 | |
3 | #include "bcachefs.h" |
4 | #include "bkey.h" |
5 | #include "keylist.h" |
6 | |
7 | int bch2_keylist_realloc(struct keylist *l, u64 *inline_u64s, |
8 | size_t nr_inline_u64s, size_t new_u64s) |
9 | { |
10 | size_t oldsize = bch2_keylist_u64s(l); |
11 | size_t newsize = oldsize + new_u64s; |
12 | u64 *old_buf = l->keys_p == inline_u64s ? NULL : l->keys_p; |
13 | u64 *new_keys; |
14 | |
15 | newsize = roundup_pow_of_two(newsize); |
16 | |
17 | if (newsize <= nr_inline_u64s || |
18 | (old_buf && roundup_pow_of_two(oldsize) == newsize)) |
19 | return 0; |
20 | |
21 | new_keys = krealloc(objp: old_buf, new_size: sizeof(u64) * newsize, GFP_NOFS); |
22 | if (!new_keys) |
23 | return -ENOMEM; |
24 | |
25 | if (!old_buf) |
26 | memcpy_u64s(dst: new_keys, src: inline_u64s, u64s: oldsize); |
27 | |
28 | l->keys_p = new_keys; |
29 | l->top_p = new_keys + oldsize; |
30 | |
31 | return 0; |
32 | } |
33 | |
34 | void bch2_keylist_pop_front(struct keylist *l) |
35 | { |
36 | l->top_p -= bch2_keylist_front(l)->k.u64s; |
37 | |
38 | memmove_u64s_down(dst: l->keys, |
39 | src: bkey_next(k: l->keys), |
40 | u64s: bch2_keylist_u64s(l)); |
41 | } |
42 | |
43 | #ifdef CONFIG_BCACHEFS_DEBUG |
44 | void bch2_verify_keylist_sorted(struct keylist *l) |
45 | { |
46 | for_each_keylist_key(l, k) |
47 | BUG_ON(bkey_next(k) != l->top && |
48 | bpos_ge(k->k.p, bkey_next(k)->k.p)); |
49 | } |
50 | #endif |
51 | |