| Joe Thornber | 3241b1d | 2011-10-31 20:19:11 +0000 | [diff] [blame] | 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 | */ |
| 16 | struct dm_space_map *dm_sm_metadata_init(void); |
| 17 | |
| 18 | /* |
| 19 | * Create a fresh space map. |
| 20 | */ |
| 21 | int 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 | */ |
| 29 | int 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 */ |