--- linux-2.6.10-rc2-mm2/mm/mmap.c.nvidia	2004-11-18 22:10:39.259326934 -0500
+++ linux-2.6.10-rc2-mm2/mm/mmap.c	2004-11-18 22:22:46.877972513 -0500
@@ -1026,7 +1026,8 @@ out:	
 	__vm_stat_account(mm, vm_flags, file, len >> PAGE_SHIFT);
 	if (vm_flags & VM_LOCKED) {
 		mm->locked_vm += len >> PAGE_SHIFT;
-		make_pages_present(addr, addr + len);
+		if (!(vm_flags & VM_IO))
+			make_pages_present(addr, addr + len);
 	}
 	if (flags & MAP_POPULATE) {
 		up_write(&mm->mmap_sem);