is read-write nullfs safe?

[Rong-en Fan]

On 6/21/07, Peter Jeremy <peterjeremy at optushome.com.au> wrote:
> On 2007-Jun-19 02:58:20 -0400, Kris Kennaway <kris at obsecurity.org> wrote:
> >On Tue, Jun 19, 2007 at 02:39:22PM +0800, Rong-en Fan wrote:
> >> I was asking about nullfs because the following lines
> >> in sys/conf/NOTES:
> >>
> >> # NB: The NULL, PORTAL, UMAP and UNION filesystems are known to be
> >> # buggy, and WILL panic your system if you attempt to do anything with
> >> # them.  They are included here as an incentive for some enterprising
> >> # soul to sit down and fix them.
> >
> >Yeah, that's almost completely stale for both 6.x and 7.x.
>
> Since this issue pops up fairly regularly, would it be possible to
> correct, tone down or remove this warning before 6.3/7.0?

Ya, how about this one:

http://people.freebsd.org/~rafan/remove-nullfs-warning.diff

It just remove NULL from the warning list. If no one objects,
I will ask re@ for approval tomorrow. BTW, since umapfs
is disconnected from build, shall we axe it?

Regards,
Rong-En Fan