diff -Nru linux/mm/mmap.c.orig linux/mm/mmap.c
--- linux/mm/mmap.c.orig	Mon Jan 12 16:31:22 2004
+++ linux/mm/mmap.c	Wed Jan 14 14:22:20 2004
@@ -1134,6 +1134,8 @@
 	struct mmu_gather *tlb;
 	unsigned long nr_accounted = 0;
 
+	flush_cache_range(vma, start, end);
+
 	lru_add_drain();
 	tlb = tlb_gather_mmu(mm, 0);
 	unmap_vmas(&tlb, mm, vma, start, end, &nr_accounted);