int dm_pool_get_metadata_dev_size(struct dm_pool_metadata *pmd,
dm_block_t *result);
-int dm_pool_get_data_block_size(struct dm_pool_metadata *pmd, sector_t *result);
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int dm_pool_get_data_dev_size(struct dm_pool_metadata *pmd, dm_block_t *result);
int dm_pool_block_is_used(struct dm_pool_metadata *pmd, dm_block_t b, bool *result);