util-linux/util-linux-2.12r-mount_mtab_update.patch

Index: mount/mount.c
===================================================================
--- mount/mount.c.orig
+++ mount/mount.c
@@ -842,6 +842,7 @@ try_mount_one (const char *spec0, const 
   int mnt5_res = 0;		/* only for gcc */
   int mnt_err;
   int flags;
+  int isroot;
   char *extra_opts;		/* written in mtab */
   char *mount_opts;		/* actually used on system call */
   const char *opts, *spec, *node, *types;
@@ -942,13 +943,17 @@ retry_nfs:
       if (loop)
 	  opt_loopdev = loopdev;
 
-      update_mtab_entry(loop ? loopfile : spec,
+	isroot = (streq (node, "/") || streq (node, "root") ||
+	streq (node, "rootfs"));
+	if (!isroot) {
+	update_mtab_entry(loop ? loopfile : spec,
 			node,
 			types ? types : "unknown",
 			fix_opts_string (flags & ~MS_NOMTAB, extra_opts, user),
 			flags,
 			freq,
 			pass);
+			}
 
       block_signals (SIG_UNBLOCK);
       res = 0;