diff -du hurd-deb.orig/tmpfs/tmpfs.h hurd/tmpfs/tmpfs.h
--- hurd-deb.orig/tmpfs/tmpfs.h	2010-05-06 11:37:31.000000000 +0200
+++ hurd/tmpfs/tmpfs.h	2010-05-18 16:13:53.000000000 +0200
@@ -64,6 +64,7 @@
 {
   struct tmpfs_dirent *next;
   struct disknode *dn;
+  char padding[3]; /* align with dirent structure */
   uint8_t namelen;
   char name[0];
 };