dm exception store: separate type from instance

Introduce struct dm_exception_store_type.

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

1 files changed, 7 insertions, 7 deletions

diff --git a/drivers/md/dm-snap-transient.c b/drivers/md/dm-snap-transient.c
index 7f6e2e6dcb0d..b558176ff020 100644
--- a/drivers/md/dm-snap-transient.c
+++ b/drivers/md/dm-snap-transient.c
@@ -39,7 +39,7 @@ static int transient_read_metadata(struct dm_exception_store *store,
 static int transient_prepare_exception(struct dm_exception_store *store,
                                        struct dm_snap_exception *e)
 {
-        struct transient_c *tc = (struct transient_c *) store->context;
+        struct transient_c *tc = store->context;
         sector_t size = get_dev_size(store->snap->cow->bdev);
 
         if (size < (tc->next_free + store->snap->chunk_size))
@@ -71,12 +71,12 @@ int dm_create_transient(struct dm_exception_store *store)
 {
         struct transient_c *tc;
 
-        store->destroy = transient_destroy;
-        store->read_metadata = transient_read_metadata;
-        store->prepare_exception = transient_prepare_exception;
-        store->commit_exception = transient_commit_exception;
-        store->drop_snapshot = NULL;
-        store->fraction_full = transient_fraction_full;
+        store->type.dtr = transient_destroy;
+        store->type.read_metadata = transient_read_metadata;
+        store->type.prepare_exception = transient_prepare_exception;
+        store->type.commit_exception = transient_commit_exception;
+        store->type.drop_snapshot = NULL;
+        store->type.fraction_full = transient_fraction_full;
 
         tc = kmalloc(sizeof(struct transient_c), GFP_KERNEL);
         if (!tc)