diff options
Diffstat (limited to 'drivers/md/persistent-data/dm-transaction-manager.h')
| -rw-r--r-- | drivers/md/persistent-data/dm-transaction-manager.h | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/md/persistent-data/dm-transaction-manager.h b/drivers/md/persistent-data/dm-transaction-manager.h index f3a18be68f30..3d75cc59bbb8 100644 --- a/drivers/md/persistent-data/dm-transaction-manager.h +++ b/drivers/md/persistent-data/dm-transaction-manager.h @@ -103,8 +103,14 @@ void dm_tm_inc(struct dm_transaction_manager *tm, dm_block_t b); void dm_tm_dec(struct dm_transaction_manager *tm, dm_block_t b); -int dm_tm_ref(struct dm_transaction_manager *tm, dm_block_t b, - uint32_t *result); +int dm_tm_ref(struct dm_transaction_manager *tm, dm_block_t b, uint32_t *result); + +/* + * Finds out if a given block is shared (ie. has a reference count higher + * than one). + */ +int dm_tm_block_is_shared(struct dm_transaction_manager *tm, dm_block_t b, + int *result); struct dm_block_manager *dm_tm_get_bm(struct dm_transaction_manager *tm); |