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_space_available(struct journal *); 20 21 static inline bool journal_pin_active(struct journal_entry_pin *pin) 22 { 23 return pin->seq != 0; 24 } 25 26 static inline struct journal_entry_pin_list * 27 journal_seq_pin(struct journal *j, u64 seq) 28 { 29 EBUG_ON(seq < j->pin.front || seq >= j->pin.back); 30 31 return &j->pin.data[seq & j->pin.mask]; 32 } 33 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 *); 38 39 void bch2_journal_pin_set(struct journal *, u64, struct journal_entry_pin *, 40 journal_pin_flush_fn); 41 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) 45 { 46 if (unlikely(!journal_pin_active(pin) || pin->seq > seq)) 47 bch2_journal_pin_set(j, seq, pin, flush_fn); 48 } 49 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) 54 { 55 /* Guard against racing with journal_pin_drop(src): */ 56 u64 seq = READ_ONCE(src->seq); 57 58 if (seq) 59 bch2_journal_pin_add(j, seq, dst, flush_fn); 60 } 61 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) 65 { 66 if (unlikely(!journal_pin_active(pin) || pin->seq < seq)) 67 bch2_journal_pin_set(j, seq, pin, flush_fn); 68 } 69 70 void bch2_journal_pin_flush(struct journal *, struct journal_entry_pin *); 71 72 void bch2_journal_do_discards(struct journal *); 73 int bch2_journal_reclaim(struct journal *); 74 75 void bch2_journal_reclaim_stop(struct journal *); 76 int bch2_journal_reclaim_start(struct journal *); 77 78 bool bch2_journal_flush_pins(struct journal *, u64); 79 80 static inline bool bch2_journal_flush_all_pins(struct journal *j) 81 { 82 return bch2_journal_flush_pins(j, U64_MAX); 83 } 84 85 int bch2_journal_flush_device_pins(struct journal *, int); 86 87 #endif /* _BCACHEFS_JOURNAL_RECLAIM_H */ 88