diff --git a/drivers/md/linear.h b/drivers/md/linear.h
index 599e5c1..0ce29b6 100644
--- a/drivers/md/linear.h
+++ b/drivers/md/linear.h
@@ -10,9 +10,9 @@
 
 struct linear_private_data
 {
-	struct linear_private_data *prev;	/* earlier version */
 	sector_t		array_sectors;
 	dev_info_t		disks[0];
+	struct rcu_head		rcu;
 };