diff --git a/mm/Kconfig b/mm/Kconfig
index 1d1ae6b..4395b12 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -325,6 +325,7 @@
 
 config MMU_NOTIFIER
 	bool
+	select SRCU
 
 config KSM
 	bool "Enable KSM for page merging"