dm exception store: introduce registry

Move exception stores into a registry.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/md/dm-snap.h b/drivers/md/dm-snap.h
index d9e62b43cf85..627be0f52c32 100644
--- a/drivers/md/dm-snap.h
+++ b/drivers/md/dm-snap.h
@@ -61,7 +61,7 @@ struct dm_snapshot {
         spinlock_t pe_lock;
 
         /* The on disk metadata handler */
-        struct dm_exception_store store;
+        struct dm_exception_store *store;
 
         struct dm_kcopyd_client *kcopyd_client;