1/*
 2 * Copyright (C) 2011 Red Hat, Inc.
 3 *
 4 * This file is released under the GPL.
 5 */
 6
 7#ifndef DM_SPACE_MAP_METADATA_H
 8#define DM_SPACE_MAP_METADATA_H
 9
10#include "dm-transaction-manager.h"
11
12/*
13 * Unfortunately we have to use two-phase construction due to the cycle
14 * between the tm and sm.
15 */
16struct dm_space_map *dm_sm_metadata_init(void);
17
18/*
19 * Create a fresh space map.
20 */
21int dm_sm_metadata_create(struct dm_space_map *sm,
22			  struct dm_transaction_manager *tm,
23			  dm_block_t nr_blocks,
24			  dm_block_t superblock);
25
26/*
27 * Open from a previously-recorded root.
28 */
29int dm_sm_metadata_open(struct dm_space_map *sm,
30			struct dm_transaction_manager *tm,
31			void *root_le, size_t len);
32
33#endif	/* DM_SPACE_MAP_METADATA_H */