diff -dur a/tmpfs/node.c b/tmpfs/node.c
--- a/tmpfs/node.c	2010-05-19 15:51:44.000000000 +0200
+++ b/tmpfs/node.c	2010-05-19 15:53:47.000000000 +0200
@@ -489,7 +489,7 @@
     {
       error_t err = default_pager_object_create (default_pager,
 						 &np->dn->u.reg.memobj,
-						 np->allocsize);
+						 vm_page_size);
       if (err)
 	{
 	  errno = err;