diff --git a/drivers/dax/super.c b/drivers/dax/super.c
index cadbd0a1a1ef..260a247c60d2 100644
--- a/drivers/dax/super.c
+++ b/drivers/dax/super.c
@@ -723,6 +723,7 @@ static int dax_fs_init(void)
 static void dax_fs_exit(void)
 {
 	kern_unmount(dax_mnt);
+	rcu_barrier();
 	kmem_cache_destroy(dax_cache);
 }