Re: Remount root RO after the root dentry drops from the namespace

[Karel Zak <kzak@redhat.com>]

On Wed, Nov 18, 2009 at 01:58:31PM +0100, Miklos Szeredi wrote:
> On Wed, 18 Nov 2009, Daniel Drake wrote:
> > 
> > 	if (flags & MS_BIND)
> > 		err = change_mount_flags(path->mnt, flags);
> > 	else
> > 		err = do_remount_sb(sb, flags, data, 0);
> > 
> 
> Note: the "flags" tested here are supplied from the argument of
> mount(2), and are not flags stored in the mount.  And btw, MS_BIND is
> not stored in the mount at all, there's absolutely no difference
> between a mount created with "--bind" and one without.

 The "flags" argument of mount(2) always contains MS_BIND for bind
 mounts (if you use standard mount(8) command and /etc/mtab) for -o
 remount.
 
    Karel

-- 
 Karel Zak  <kzak@redhat.com>