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 #define for_each_journal_key(keys, i)                           \
   6         for (i = (keys).d; i < (keys).d + (keys).nr; (i)++)
   7
   8 struct journal_iter {
   9         enum btree_id           btree_id;
  10         unsigned                level;
  11         struct journal_keys     *keys;
  12         struct journal_key      *k;
  13 };
  14
  15 /*
  16  * Iterate over keys in the btree, with keys from the journal overlaid on top:
  17  */
  18
  19 struct btree_and_journal_iter {
  20         struct btree_iter       *btree;
  21
  22         struct btree            *b;
  23         struct btree_node_iter  node_iter;
  24         struct bkey             unpacked;
  25
  26         struct journal_iter     journal;
  27
  28         enum last_key_returned {
  29                 none,
  30                 btree,
  31                 journal,
  32         }                       last;
  33 };
  34
  35 void bch2_btree_and_journal_iter_advance(struct btree_and_journal_iter *);
  36 struct bkey_s_c bch2_btree_and_journal_iter_peek(struct btree_and_journal_iter *);
  37 struct bkey_s_c bch2_btree_and_journal_iter_next(struct btree_and_journal_iter *);
  38
  39 void bch2_btree_and_journal_iter_init(struct btree_and_journal_iter *,
  40                                       struct btree_trans *,
  41                                       struct journal_keys *,
  42                                       enum btree_id, struct bpos);
  43 void bch2_btree_and_journal_iter_init_node_iter(struct btree_and_journal_iter *,
  44                                                 struct journal_keys *,
  45                                                 struct btree *);
  46
  47 typedef int (*btree_walk_node_fn)(struct bch_fs *c, struct btree *b);
  48 typedef int (*btree_walk_key_fn)(struct bch_fs *c, enum btree_id id,
  49                                  unsigned level, struct bkey_s_c k);
  50
  51 int bch2_btree_and_journal_walk(struct bch_fs *, struct journal_keys *, enum btree_id,
  52                                 btree_walk_node_fn, btree_walk_key_fn);
  53
  54 void bch2_journal_keys_free(struct journal_keys *);
  55 void bch2_journal_entries_free(struct list_head *);
  56
  57 int bch2_fs_recovery(struct bch_fs *);
  58 int bch2_fs_initialize(struct bch_fs *);
  59
  60 #endif /* _BCACHEFS_RECOVERY_H */