fs/bcachefs/journal_reclaim.h

   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 */