82 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2#ifndef _BCACHEFS_JOURNAL_RECLAIM_H3#define _BCACHEFS_JOURNAL_RECLAIM_H4 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 81#endif /* _BCACHEFS_JOURNAL_RECLAIM_H */82