[issue1537] null mount does not accept -o update

[Matthew Dillon]

:Stathis Kamperis <ekamperi at gmail.com> added the comment:
:
:Ping!
:
:Anyone interested with time and clue to review the patch ?
:I'd like to push it at some point, before it gets too stale, but ain't gonn=
:a
:happen if at least someone else gives me a thumbs up.
:
:Cheers,
:Stathis

    It looks committable to me.   The only possible issue is whether
    the type field for mount -u operations can ever be NULL.  It
    doesn't seem to ever be NULL so I think we're ok there.

					-Matt
					Matthew Dillon 
					<dillon at backplane.com>