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  */
  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 */