diff --git a/include/linux/ramfs.h b/include/linux/ramfs.h
index 4e768dd..8600508 100644
--- a/include/linux/ramfs.h
+++ b/include/linux/ramfs.h
@@ -20,4 +20,6 @@
 extern const struct vm_operations_struct generic_file_vm_ops;
 extern int __init init_rootfs(void);
 
+int ramfs_fill_super(struct super_block *sb, void *data, int silent);
+
 #endif