diff -urN 2.4.0-test4-pre6/mm/memory.c vm-25/mm/memory.c
--- 2.4.0-test4-pre6/mm/memory.c	Fri Jul 14 18:41:04 2000
+++ vm-25/mm/memory.c	Sun Jul 16 01:51:15 2000
@@ -836,6 +858,7 @@
 	 */
 	switch (page_count(old_page)) {
 	case 2:
+	case 3:
 		/*
 		 * Lock the page so that no one can look it up from
 		 * the swap cache, grab a reference and start using it.