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         struct list_head        list;
  10         enum btree_id           btree_id;
  11         unsigned                level;
  12         size_t                  idx;
  13         struct journal_keys     *keys;
  14 };
  15
  16 /*
  17  * Iterate over keys in the btree, with keys from the journal overlaid on top:
  18  */
  19
  20 struct btree_and_journal_iter {
  21         struct btree            *b;
  22         struct btree_node_iter  node_iter;
  23         struct bkey             unpacked;
  24
  25         struct journal_iter     journal;
  26
  27         enum last_key_returned {
  28                 none,
  29                 btree,
  30                 journal,
  31         }                       last;
  32 };
  33
  34 size_t bch2_journal_key_search(struct journal_keys *, enum btree_id,
  35                                unsigned, struct bpos);
  36 struct bkey_i *bch2_journal_keys_peek(struct bch_fs *, enum btree_id,
  37                                       unsigned, struct bpos pos);
  38
  39 int bch2_journal_key_insert_take(struct bch_fs *, enum btree_id,
  40                                  unsigned, struct bkey_i *);
  41 int bch2_journal_key_insert(struct bch_fs *, enum btree_id,
  42                             unsigned, struct bkey_i *);
  43 int bch2_journal_key_delete(struct bch_fs *, enum btree_id,
  44                             unsigned, struct bpos);
  45 void bch2_journal_key_overwritten(struct bch_fs *, enum btree_id,
  46                                   unsigned, struct bpos);
  47
  48 void bch2_btree_and_journal_iter_advance(struct btree_and_journal_iter *);
  49 struct bkey_s_c bch2_btree_and_journal_iter_peek(struct btree_and_journal_iter *);
  50 struct bkey_s_c bch2_btree_and_journal_iter_next(struct btree_and_journal_iter *);
  51
  52 void bch2_btree_and_journal_iter_exit(struct btree_and_journal_iter *);
  53 void __bch2_btree_and_journal_iter_init_node_iter(struct btree_and_journal_iter *,
  54                                 struct bch_fs *, struct btree *,
  55                                 struct btree_node_iter, struct bpos);
  56 void bch2_btree_and_journal_iter_init_node_iter(struct btree_and_journal_iter *,
  57                                                 struct bch_fs *,
  58                                                 struct btree *);
  59
  60 void bch2_journal_keys_free(struct journal_keys *);
  61 void bch2_journal_entries_free(struct list_head *);
  62
  63 int bch2_fs_recovery(struct bch_fs *);
  64 int bch2_fs_initialize(struct bch_fs *);
  65
  66 #endif /* _BCACHEFS_RECOVERY_H */