tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _BCACHEFS_JOURNAL_RECLAIM_H
3#define _BCACHEFS_JOURNAL_RECLAIM_H
4
5#define JOURNAL_PIN (32 * 1024)
6
7static inline void journal_reclaim_kick(struct journal *j)
8{
9 struct task_struct *p = READ_ONCE(j->reclaim_thread);
10
11 j->reclaim_kicked = true;
12 if (p)
13 wake_up_process(p);
14}
15
16unsigned bch2_journal_dev_buckets_available(struct journal *,
17 struct journal_device *,
18 enum journal_space_from);
19void bch2_journal_set_watermark(struct journal *);
20void bch2_journal_space_available(struct journal *);
21
22static inline bool journal_pin_active(struct journal_entry_pin *pin)
23{
24 return pin->seq != 0;
25}
26
27static inline struct journal_entry_pin_list *
28journal_seq_pin(struct journal *j, u64 seq)
29{
30 EBUG_ON(seq < j->pin.front || seq >= j->pin.back);
31
32 return &j->pin.data[seq & j->pin.mask];
33}
34
35void bch2_journal_reclaim_fast(struct journal *);
36bool __bch2_journal_pin_put(struct journal *, u64);
37void bch2_journal_pin_put(struct journal *, u64);
38void bch2_journal_pin_drop(struct journal *, struct journal_entry_pin *);
39
40void bch2_journal_pin_set(struct journal *, u64, struct journal_entry_pin *,
41 journal_pin_flush_fn);
42
43static inline void bch2_journal_pin_add(struct journal *j, u64 seq,
44 struct journal_entry_pin *pin,
45 journal_pin_flush_fn flush_fn)
46{
47 if (unlikely(!journal_pin_active(pin) || pin->seq > seq))
48 bch2_journal_pin_set(j, seq, pin, flush_fn);
49}
50
51void bch2_journal_pin_copy(struct journal *,
52 struct journal_entry_pin *,
53 struct journal_entry_pin *,
54 journal_pin_flush_fn);
55
56static inline void bch2_journal_pin_update(struct journal *j, u64 seq,
57 struct journal_entry_pin *pin,
58 journal_pin_flush_fn flush_fn)
59{
60 if (unlikely(!journal_pin_active(pin) || pin->seq < seq))
61 bch2_journal_pin_set(j, seq, pin, flush_fn);
62}
63
64void bch2_journal_pin_flush(struct journal *, struct journal_entry_pin *);
65
66void bch2_journal_do_discards(struct journal *);
67int bch2_journal_reclaim(struct journal *);
68
69void bch2_journal_reclaim_stop(struct journal *);
70int bch2_journal_reclaim_start(struct journal *);
71
72bool bch2_journal_flush_pins(struct journal *, u64);
73
74static inline bool bch2_journal_flush_all_pins(struct journal *j)
75{
76 return bch2_journal_flush_pins(j, U64_MAX);
77}
78
79int bch2_journal_flush_device_pins(struct journal *, int);
80
81void bch2_journal_pins_to_text(struct printbuf *, struct journal *);
82bool bch2_journal_seq_pins_to_text(struct printbuf *, struct journal *, u64 *);
83
84#endif /* _BCACHEFS_JOURNAL_RECLAIM_H */