git.sesse.net Git - bcachefs-tools-debian/blob - libbcachefs/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 enum journal_space_from {
   8         journal_space_discarded,
   9         journal_space_clean_ondisk,
  10         journal_space_clean,
  11 };
  12
  13 unsigned bch2_journal_dev_buckets_available(struct journal *,
  14                                             struct journal_device *,
  15                                             enum journal_space_from);
  16 void bch2_journal_space_available(struct journal *);
  17
  18 static inline bool journal_pin_active(struct journal_entry_pin *pin)
  19 {
  20         return pin->seq != 0;
  21 }
  22
  23 static inline struct journal_entry_pin_list *
  24 journal_seq_pin(struct journal *j, u64 seq)
  25 {
  26         EBUG_ON(seq < j->pin.front || seq >= j->pin.back);
  27
  28         return &j->pin.data[seq & j->pin.mask];
  29 }
  30
  31 void bch2_journal_pin_put(struct journal *, u64);
  32 void bch2_journal_pin_drop(struct journal *, struct journal_entry_pin *);
  33
  34 void __bch2_journal_pin_add(struct journal *, u64, struct journal_entry_pin *,
  35                             journal_pin_flush_fn);
  36
  37 static inline void bch2_journal_pin_add(struct journal *j, u64 seq,
  38                                         struct journal_entry_pin *pin,
  39                                         journal_pin_flush_fn flush_fn)
  40 {
  41         if (unlikely(!journal_pin_active(pin) || pin->seq > seq))
  42                 __bch2_journal_pin_add(j, seq, pin, flush_fn);
  43 }
  44
  45 void bch2_journal_pin_update(struct journal *, u64,
  46                              struct journal_entry_pin *,
  47                              journal_pin_flush_fn);
  48
  49 void bch2_journal_pin_copy(struct journal *,
  50                            struct journal_entry_pin *,
  51                            struct journal_entry_pin *,
  52                            journal_pin_flush_fn);
  53
  54 void bch2_journal_pin_flush(struct journal *, struct journal_entry_pin *);
  55
  56 void bch2_journal_do_discards(struct journal *);
  57 void bch2_journal_reclaim(struct journal *);
  58 void bch2_journal_reclaim_work(struct work_struct *);
  59
  60 bool bch2_journal_flush_pins(struct journal *, u64);
  61
  62 static inline bool bch2_journal_flush_all_pins(struct journal *j)
  63 {
  64         return bch2_journal_flush_pins(j, U64_MAX);
  65 }
  66
  67 int bch2_journal_flush_device_pins(struct journal *, int);
  68
  69 #endif /* _BCACHEFS_JOURNAL_RECLAIM_H */