diff --git a/mm/nommu.c b/mm/nommu.c
index c119681..c10262d 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1177,3 +1177,10 @@
 {
 	return 0;
 }
+
+struct page *filemap_nopage(struct vm_area_struct *area,
+			unsigned long address, int *type)
+{
+	BUG();
+	return NULL;
+}