Subject: Re: vnd0 causes "locking against myself"
To: Jason Thorpe <email@example.com>
From: Frank van der Linden <firstname.lastname@example.org>
Date: 10/04/1997 20:44:34
On Sat, Oct 04, 1997 at 10:10:06AM -0700, Jason Thorpe wrote:
> On Sat, 04 Oct 1997 12:33:41 -0400
> "Perry E. Metzger" <email@example.com> wrote:
> > Andrew Gillham writes:
> > > And wham, it panics with "locking against myself."
> > Ah. How old is your -current? A bug like this was fixed a couple of
> > weeks ago...
> Not really... it sounds like a vnode locking issue, not a vm_map locking
> issue. the fact that the error messages are similar means nothing :-)
It is a vnode locking issue. There was a PR on this a while ago, and
it was looked into. Pk did a good analysis of the problem, and AFAIR
a suggested fix is to remove locking calls at a certain spot in the
vnd code, because that should be safe and prevent trouble.
I can't remember the PR number at the moment. It would be good to fix
it before 1.3