xref: /linux/fs/bcachefs/journal_reclaim.h (revision 06d07429858317ded2db7986113a9e0129cd599b)
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 
journal_reclaim_kick(struct journal * j)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 
journal_pin_active(struct journal_entry_pin * pin)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 *
journal_seq_pin(struct journal * j,u64 seq)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 
bch2_journal_pin_add(struct journal * j,u64 seq,struct journal_entry_pin * pin,journal_pin_flush_fn flush_fn)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 
bch2_journal_pin_update(struct journal * j,u64 seq,struct journal_entry_pin * pin,journal_pin_flush_fn flush_fn)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 
bch2_journal_flush_all_pins(struct journal * j)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