openbsd solution to mounted umass removal

[M. Warner Losh]

In message: <48285372.9060103 at icyb.net.ua>
            Andriy Gapon <avg at icyb.net.ua> writes:
: 
: I've just came back from a good 2 week vacation and catching up on news.
: In release notes for OpenBSD 4.3 I see the following:
: http://openbsd.org/43.html
: Filesystems on USB devices are automatically dismounted if the device is
: disconnected.
: 
: Does anybody have more [technical] details on this?

effectively, that's what -current winds up doing...  except for the
actual umount() call...

Warner