diff -upN reference/kernel/sched.c current/kernel/sched.c
--- reference/kernel/sched.c	Wed Jun 16 10:59:28 2004
+++ current/kernel/sched.c	Wed Jun 16 15:53:11 2004
@@ -25,6 +25,7 @@
 #include <asm/uaccess.h>
 #include <linux/highmem.h>
 #include <linux/smp_lock.h>
+#include <linux/pagemap.h>
 #include <asm/mmu_context.h>
 #include <linux/interrupt.h>
 #include <linux/completion.h>