diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index 5680422..3344185 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -222,6 +222,7 @@
 extern int tainted;
 extern const char *print_tainted(void);
 extern void add_taint(unsigned);
+extern int root_mountflags;
 
 /* Values used for system_state */
 extern enum system_states {