git.sesse.net Git - bcachefs-tools-debian/blob - libbcachefs/recovery.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _BCACHEFS_RECOVERY_H
   3 #define _BCACHEFS_RECOVERY_H
   4
   5 struct journal_keys {
   6         struct journal_key {
   7                 enum btree_id   btree_id:8;
   8                 unsigned        level:8;
   9                 struct bkey_i   *k;
  10                 u32             journal_seq;
  11                 u32             journal_offset;
  12         }                       *d;
  13         size_t                  nr;
  14         u64                     journal_seq_base;
  15 };
  16
  17 #define for_each_journal_key(keys, i)                           \
  18         for (i = (keys).d; i < (keys).d + (keys).nr; (i)++)
  19
  20 struct journal_iter {
  21         enum btree_id           btree_id;
  22         unsigned                level;
  23         struct journal_keys     *keys;
  24         struct journal_key      *k;
  25 };
  26
  27 /*
  28  * Iterate over keys in the btree, with keys from the journal overlaid on top:
  29  */
  30
  31 struct btree_and_journal_iter {
  32         struct btree_iter       *btree;
  33
  34         struct btree            *b;
  35         struct btree_node_iter  node_iter;
  36         struct bkey             unpacked;
  37
  38         struct journal_iter     journal;
  39
  40         enum last_key_returned {
  41                 none,
  42                 btree,
  43                 journal,
  44         }                       last;
  45 };
  46
  47 void bch2_btree_and_journal_iter_advance(struct btree_and_journal_iter *);
  48 struct bkey_s_c bch2_btree_and_journal_iter_peek(struct btree_and_journal_iter *);
  49 struct bkey_s_c bch2_btree_and_journal_iter_next(struct btree_and_journal_iter *);
  50
  51 void bch2_btree_and_journal_iter_init(struct btree_and_journal_iter *,
  52                                       struct btree_trans *,
  53                                       struct journal_keys *,
  54                                       enum btree_id, struct bpos);
  55 void bch2_btree_and_journal_iter_init_node_iter(struct btree_and_journal_iter *,
  56                                                 struct journal_keys *,
  57                                                 struct btree *);
  58
  59 int bch2_fs_recovery(struct bch_fs *);
  60 int bch2_fs_initialize(struct bch_fs *);
  61
  62 #endif /* _BCACHEFS_RECOVERY_H */