Root/drivers/md/persistent-data/dm-space-map-metadata.h

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 */
34

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