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76 lines
2.4 KiB
C
76 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_BTREE_JOURNAL_ITER_H
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#define _BCACHEFS_BTREE_JOURNAL_ITER_H
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struct journal_iter {
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struct list_head list;
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enum btree_id btree_id;
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unsigned level;
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size_t idx;
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struct journal_keys *keys;
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};
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/*
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* Iterate over keys in the btree, with keys from the journal overlaid on top:
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*/
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struct btree_and_journal_iter {
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struct btree_trans *trans;
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struct btree *b;
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struct btree_node_iter node_iter;
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struct bkey unpacked;
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struct journal_iter journal;
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struct bpos pos;
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bool at_end;
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bool prefetch;
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};
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struct bkey_i *bch2_journal_keys_peek_upto(struct bch_fs *, enum btree_id,
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unsigned, struct bpos, struct bpos, size_t *);
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struct bkey_i *bch2_journal_keys_peek_slot(struct bch_fs *, enum btree_id,
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unsigned, struct bpos);
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int bch2_btree_and_journal_iter_prefetch(struct btree_trans *, struct btree_path *,
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struct btree_and_journal_iter *);
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int bch2_journal_key_insert_take(struct bch_fs *, enum btree_id,
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unsigned, struct bkey_i *);
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int bch2_journal_key_insert(struct bch_fs *, enum btree_id,
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unsigned, struct bkey_i *);
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int bch2_journal_key_delete(struct bch_fs *, enum btree_id,
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unsigned, struct bpos);
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bool bch2_key_deleted_in_journal(struct btree_trans *, enum btree_id, unsigned, struct bpos);
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void bch2_journal_key_overwritten(struct bch_fs *, enum btree_id, unsigned, struct bpos);
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void bch2_btree_and_journal_iter_advance(struct btree_and_journal_iter *);
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struct bkey_s_c bch2_btree_and_journal_iter_peek(struct btree_and_journal_iter *);
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void bch2_btree_and_journal_iter_exit(struct btree_and_journal_iter *);
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void __bch2_btree_and_journal_iter_init_node_iter(struct btree_trans *,
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struct btree_and_journal_iter *, struct btree *,
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struct btree_node_iter, struct bpos);
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void bch2_btree_and_journal_iter_init_node_iter(struct btree_trans *,
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struct btree_and_journal_iter *, struct btree *);
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void bch2_journal_keys_put(struct bch_fs *);
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static inline void bch2_journal_keys_put_initial(struct bch_fs *c)
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{
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if (c->journal_keys.initial_ref_held)
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bch2_journal_keys_put(c);
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c->journal_keys.initial_ref_held = false;
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}
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void bch2_journal_entries_free(struct bch_fs *);
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int bch2_journal_keys_sort(struct bch_fs *);
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void bch2_shoot_down_journal_keys(struct bch_fs *, enum btree_id,
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unsigned, unsigned,
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struct bpos, struct bpos);
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void bch2_journal_keys_dump(struct bch_fs *);
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#endif /* _BCACHEFS_BTREE_JOURNAL_ITER_H */
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