dm exception store: move cow pointer
Move COW device from snapshot to exception store.
Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
diff --git a/drivers/md/dm-exception-store.h b/drivers/md/dm-exception-store.h
index 449a1e4..4dbf357 100644
--- a/drivers/md/dm-exception-store.h
+++ b/drivers/md/dm-exception-store.h
@@ -99,6 +99,8 @@
struct dm_snapshot *snap;
+ struct dm_dev *cow;
+
/* Size of data blocks saved - must be a power of 2 */
chunk_t chunk_size;
chunk_t chunk_mask;
@@ -155,7 +157,7 @@
int dm_exception_store_create(const char *type_name, struct dm_target *ti,
chunk_t chunk_size, chunk_t chunk_mask,
- chunk_t chunk_shift,
+ chunk_t chunk_shift, struct dm_dev *cow,
struct dm_exception_store **store);
void dm_exception_store_destroy(struct dm_exception_store *store);