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>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/md/dm-snap-transient.c b/drivers/md/dm-snap-transient.c
index c542ababb418..77f58be080c4 100644
--- a/drivers/md/dm-snap-transient.c
+++ b/drivers/md/dm-snap-transient.c
@@ -40,7 +40,7 @@ static int transient_prepare_exception(struct dm_exception_store *store,
                                        struct dm_snap_exception *e)
 {
         struct transient_c *tc = store->context;
-        sector_t size = get_dev_size(store->snap->cow->bdev);
+        sector_t size = get_dev_size(store->cow->bdev);
 
         if (size < (tc->next_free + store->chunk_size))
                 return -1;
@@ -64,7 +64,7 @@ static void transient_fraction_full(struct dm_exception_store *store,
                                     sector_t *numerator, sector_t *denominator)
 {
         *numerator = ((struct transient_c *) store->context)->next_free;
-        *denominator = get_dev_size(store->snap->cow->bdev);
+        *denominator = get_dev_size(store->cow->bdev);
 }
 
 static int transient_ctr(struct dm_exception_store *store,