1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BCACHEFS_BTREE_JOURNAL_ITER_H
3 #define _BCACHEFS_BTREE_JOURNAL_ITER_H
7 enum btree_id btree_id;
10 struct journal_keys *keys;
14 * Iterate over keys in the btree, with keys from the journal overlaid on top:
17 struct btree_and_journal_iter {
18 struct btree_trans *trans;
20 struct btree_node_iter node_iter;
23 struct journal_iter journal;
29 struct bkey_i *bch2_journal_keys_peek_upto(struct bch_fs *, enum btree_id,
30 unsigned, struct bpos, struct bpos, size_t *);
31 struct bkey_i *bch2_journal_keys_peek_slot(struct bch_fs *, enum btree_id,
32 unsigned, struct bpos);
34 int bch2_btree_and_journal_iter_prefetch(struct btree_trans *, struct btree_path *,
35 struct btree_and_journal_iter *);
37 int bch2_journal_key_insert_take(struct bch_fs *, enum btree_id,
38 unsigned, struct bkey_i *);
39 int bch2_journal_key_insert(struct bch_fs *, enum btree_id,
40 unsigned, struct bkey_i *);
41 int bch2_journal_key_delete(struct bch_fs *, enum btree_id,
42 unsigned, struct bpos);
43 bool bch2_key_deleted_in_journal(struct btree_trans *, enum btree_id, unsigned, struct bpos);
44 void bch2_journal_key_overwritten(struct bch_fs *, enum btree_id, unsigned, struct bpos);
46 void bch2_btree_and_journal_iter_advance(struct btree_and_journal_iter *);
47 struct bkey_s_c bch2_btree_and_journal_iter_peek(struct btree_and_journal_iter *);
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_trans *,
51 struct btree_and_journal_iter *, struct btree *,
52 struct btree_node_iter, struct bpos);
53 void bch2_btree_and_journal_iter_init_node_iter(struct btree_trans *,
54 struct btree_and_journal_iter *, struct btree *);
56 void bch2_journal_keys_put(struct bch_fs *);
58 static inline void bch2_journal_keys_put_initial(struct bch_fs *c)
60 if (c->journal_keys.initial_ref_held)
61 bch2_journal_keys_put(c);
62 c->journal_keys.initial_ref_held = false;
65 void bch2_journal_entries_free(struct bch_fs *);
67 int bch2_journal_keys_sort(struct bch_fs *);
69 void bch2_shoot_down_journal_keys(struct bch_fs *, enum btree_id,
71 struct bpos, struct bpos);
73 #endif /* _BCACHEFS_BTREE_JOURNAL_ITER_H */