1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BCACHEFS_JOURNAL_RECLAIM_H
3 #define _BCACHEFS_JOURNAL_RECLAIM_H
5 #define JOURNAL_PIN (32 * 1024)
7 static inline void journal_reclaim_kick(struct journal *j)
9 struct task_struct *p = READ_ONCE(j->reclaim_thread);
11 j->reclaim_kicked = true;
16 unsigned bch2_journal_dev_buckets_available(struct journal *,
17 struct journal_device *,
18 enum journal_space_from);
19 void bch2_journal_space_available(struct journal *);
21 static inline bool journal_pin_active(struct journal_entry_pin *pin)
26 static inline struct journal_entry_pin_list *
27 journal_seq_pin(struct journal *j, u64 seq)
29 EBUG_ON(seq < j->pin.front || seq >= j->pin.back);
31 return &j->pin.data[seq & j->pin.mask];
34 void bch2_journal_reclaim_fast(struct journal *);
35 bool __bch2_journal_pin_put(struct journal *, u64);
36 void bch2_journal_pin_put(struct journal *, u64);
37 void bch2_journal_pin_drop(struct journal *, struct journal_entry_pin *);
39 void bch2_journal_pin_set(struct journal *, u64, struct journal_entry_pin *,
40 journal_pin_flush_fn);
42 static inline void bch2_journal_pin_add(struct journal *j, u64 seq,
43 struct journal_entry_pin *pin,
44 journal_pin_flush_fn flush_fn)
46 if (unlikely(!journal_pin_active(pin) || pin->seq > seq))
47 bch2_journal_pin_set(j, seq, pin, flush_fn);
50 static inline void bch2_journal_pin_copy(struct journal *j,
51 struct journal_entry_pin *dst,
52 struct journal_entry_pin *src,
53 journal_pin_flush_fn flush_fn)
55 /* Guard against racing with journal_pin_drop(src): */
56 u64 seq = READ_ONCE(src->seq);
59 bch2_journal_pin_add(j, seq, dst, flush_fn);
62 static inline void bch2_journal_pin_update(struct journal *j, u64 seq,
63 struct journal_entry_pin *pin,
64 journal_pin_flush_fn flush_fn)
66 if (unlikely(!journal_pin_active(pin) || pin->seq < seq))
67 bch2_journal_pin_set(j, seq, pin, flush_fn);
70 void bch2_journal_pin_flush(struct journal *, struct journal_entry_pin *);
72 void bch2_journal_do_discards(struct journal *);
73 int bch2_journal_reclaim(struct journal *);
75 void bch2_journal_reclaim_stop(struct journal *);
76 int bch2_journal_reclaim_start(struct journal *);
78 bool bch2_journal_flush_pins(struct journal *, u64);
80 static inline bool bch2_journal_flush_all_pins(struct journal *j)
82 return bch2_journal_flush_pins(j, U64_MAX);
85 int bch2_journal_flush_device_pins(struct journal *, int);
87 #endif /* _BCACHEFS_JOURNAL_RECLAIM_H */