diff -upN reference/kernel/sched.c current/kernel/sched.c
--- reference/kernel/sched.c	2004-04-30 12:57:47.000000000 -0700
+++ current/kernel/sched.c	2004-05-01 15:03:42.000000000 -0700
@@ -24,6 +24,7 @@
 #include <asm/uaccess.h>
 #include <linux/highmem.h>
 #include <linux/smp_lock.h>
+#include <linux/pagemap.h>
 #include <asm/mmu_context.h>
 #include <asm/tlb.h>
 #include <linux/interrupt.h>