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
7 static 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
16 unsigned bch2_journal_dev_buckets_available(struct journal *,
17 struct journal_device *,
18 enum journal_space_from);
19 void bch2_journal_set_watermark(struct journal *);
20 void bch2_journal_space_available(struct journal *);
21
22 static inline bool journal_pin_active(struct journal_entry_pin *pin)
23 {
24 return pin->seq != 0;
25 }
26
27 static inline struct journal_entry_pin_list *
28 journal_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
35 void bch2_journal_reclaim_fast(struct journal *);
36 bool __bch2_journal_pin_put(struct journal *, u64);
37 void bch2_journal_pin_put(struct journal *, u64);
38 void bch2_journal_pin_drop(struct journal *, struct journal_entry_pin *);
39
40 void bch2_journal_pin_set(struct journal *, u64, struct journal_entry_pin *,
41 journal_pin_flush_fn);
42
43 static 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
51 void bch2_journal_pin_copy(struct journal *,
52 struct journal_entry_pin *,
53 struct journal_entry_pin *,
54 journal_pin_flush_fn);
55
56 static 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
64 void bch2_journal_pin_flush(struct journal *, struct journal_entry_pin *);
65
66 void bch2_journal_do_discards(struct journal *);
67 int bch2_journal_reclaim(struct journal *);
68
69 void bch2_journal_reclaim_stop(struct journal *);
70 int bch2_journal_reclaim_start(struct journal *);
71
72 bool bch2_journal_flush_pins(struct journal *, u64);
73
74 static inline bool bch2_journal_flush_all_pins(struct journal *j)
75 {
76 return bch2_journal_flush_pins(j, U64_MAX);
77 }
78
79 int bch2_journal_flush_device_pins(struct journal *, int);
80
81 #endif /* _BCACHEFS_JOURNAL_RECLAIM_H */
82
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