The original MS_COMMENT is in conflict with MS_UNBINDABLE.

--- util-linux-2.12r/mount/mount.c.orig	2007-01-31 15:30:42 +0000

+++ util-linux-2.12r/mount/mount.c	2007-01-31 15:31:13 +0000

@@ -99,7 +99,7 @@ struct opt_map {

 #define MS_USER		0x20000000

 #define MS_OWNER	0x10000000

 #define MS_GROUP	0x08000000

-#define MS_COMMENT	0x00020000

+#define MS_COMMENT	0x02000000

 #define MS_LOOP		0x00010000

 /* Options that we keep the mount system call from seeing.  */