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_iter {
   6         struct list_head        list;
   7         enum btree_id           btree_id;
   8         unsigned                level;
   9         size_t                  idx;
  10         struct journal_keys     *keys;
  11 };
  12
  13 /*
  14  * Iterate over keys in the btree, with keys from the journal overlaid on top:
  15  */
  16
  17 struct btree_and_journal_iter {
  18         struct btree            *b;
  19         struct btree_node_iter  node_iter;
  20         struct bkey             unpacked;
  21
  22         struct journal_iter     journal;
  23
  24         enum last_key_returned {
  25                 none,
  26                 btree,
  27                 journal,
  28         }                       last;
  29 };
  30
  31 struct bkey_i *bch2_journal_keys_peek_upto(struct bch_fs *, enum btree_id,
  32                                 unsigned, struct bpos, struct bpos, size_t *);
  33 struct bkey_i *bch2_journal_keys_peek_slot(struct bch_fs *, enum btree_id,
  34                                            unsigned, struct bpos);
  35
  36 int bch2_journal_key_insert_take(struct bch_fs *, enum btree_id,
  37                                  unsigned, struct bkey_i *);
  38 int bch2_journal_key_insert(struct bch_fs *, enum btree_id,
  39                             unsigned, struct bkey_i *);
  40 int bch2_journal_key_delete(struct bch_fs *, enum btree_id,
  41                             unsigned, struct bpos);
  42 void bch2_journal_key_overwritten(struct bch_fs *, enum btree_id,
  43                                   unsigned, struct bpos);
  44
  45 void bch2_btree_and_journal_iter_advance(struct btree_and_journal_iter *);
  46 struct bkey_s_c bch2_btree_and_journal_iter_peek(struct btree_and_journal_iter *);
  47 struct bkey_s_c bch2_btree_and_journal_iter_next(struct btree_and_journal_iter *);
  48
  49 void bch2_btree_and_journal_iter_exit(struct btree_and_journal_iter *);
  50 void __bch2_btree_and_journal_iter_init_node_iter(struct btree_and_journal_iter *,
  51                                 struct bch_fs *, struct btree *,
  52                                 struct btree_node_iter, struct bpos);
  53 void bch2_btree_and_journal_iter_init_node_iter(struct btree_and_journal_iter *,
  54                                                 struct bch_fs *,
  55                                                 struct btree *);
  56
  57 void bch2_journal_keys_free(struct journal_keys *);
  58 void bch2_journal_entries_free(struct bch_fs *);
  59
  60 int bch2_fs_recovery(struct bch_fs *);
  61 int bch2_fs_initialize(struct bch_fs *);
  62
  63 #endif /* _BCACHEFS_RECOVERY_H */