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.c b/drivers/md/dm-exception-store.c
index 59c949b..2078b92 100644
--- a/drivers/md/dm-exception-store.c
+++ b/drivers/md/dm-exception-store.c
@@ -139,7 +139,7 @@
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)
{
int r = 0;
@@ -163,6 +163,8 @@
tmp_store->chunk_mask = chunk_mask;
tmp_store->chunk_shift = chunk_shift;
+ tmp_store->cow = cow;
+
r = type->ctr(tmp_store, 0, NULL);
if (r) {
put_type(type);
