Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _BCACHEFS_BTREE_WRITE_BUFFER_H
3#define _BCACHEFS_BTREE_WRITE_BUFFER_H
4
5#include "bkey.h"
6
7static inline bool bch2_btree_write_buffer_should_flush(struct bch_fs *c)
8{
9 struct btree_write_buffer *wb = &c->btree_write_buffer;
10
11 return wb->inc.keys.nr + wb->flushing.keys.nr > wb->inc.keys.size / 4;
12}
13
14static inline bool bch2_btree_write_buffer_must_wait(struct bch_fs *c)
15{
16 struct btree_write_buffer *wb = &c->btree_write_buffer;
17
18 return wb->inc.keys.nr > wb->inc.keys.size * 3 / 4;
19}
20
21struct btree_trans;
22int bch2_btree_write_buffer_flush_sync(struct btree_trans *);
23int bch2_btree_write_buffer_flush_nocheck_rw(struct btree_trans *);
24int bch2_btree_write_buffer_tryflush(struct btree_trans *);
25
26struct bkey_buf;
27int bch2_btree_write_buffer_maybe_flush(struct btree_trans *, struct bkey_s_c, struct bkey_buf *);
28
29struct journal_keys_to_wb {
30 struct btree_write_buffer_keys *wb;
31 size_t room;
32 u64 seq;
33};
34
35int bch2_journal_key_to_wb_slowpath(struct bch_fs *,
36 struct journal_keys_to_wb *,
37 enum btree_id, struct bkey_i *);
38
39static inline int bch2_journal_key_to_wb(struct bch_fs *c,
40 struct journal_keys_to_wb *dst,
41 enum btree_id btree, struct bkey_i *k)
42{
43 EBUG_ON(!dst->seq);
44
45 if (unlikely(!dst->room))
46 return bch2_journal_key_to_wb_slowpath(c, dst, btree, k);
47
48 struct btree_write_buffered_key *wb_k = &darray_top(dst->wb->keys);
49 wb_k->journal_seq = dst->seq;
50 wb_k->btree = btree;
51 bkey_copy(&wb_k->k, k);
52 dst->wb->keys.nr++;
53 dst->room--;
54 return 0;
55}
56
57void bch2_journal_keys_to_write_buffer_start(struct bch_fs *, struct journal_keys_to_wb *, u64);
58void bch2_journal_keys_to_write_buffer_end(struct bch_fs *, struct journal_keys_to_wb *);
59
60int bch2_btree_write_buffer_resize(struct bch_fs *, size_t);
61void bch2_fs_btree_write_buffer_exit(struct bch_fs *);
62int bch2_fs_btree_write_buffer_init(struct bch_fs *);
63
64#endif /* _BCACHEFS_BTREE_WRITE_BUFFER_H */