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Date:      Mon, 28 May 2001 06:22:28 -0700
From:      Doug Barton <DougB@DougBarton.net>
To:        Bruce Evans <bde@zeta.org.au>
Cc:        n_hibma@FreeBSD.org, Poul-Henning Kamp <phk@FreeBSD.org>, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject:   Re: cvs commit: src/sys/kern subr_disk.c
Message-ID:  <3B125114.68EAC4D7@DougBarton.net>
References:  <Pine.BSF.4.21.0105282255010.2091-100000@besplex.bde.org>

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Bruce Evans wrote:
> 
> On Mon, 28 May 2001 n_hibma@FreeBSD.org wrote:
> 
> > Reverting this commit avoids the panic I just mailed you. No idea why.
> >
> > Anything you want me to try to look into this? Little problem is that I
> > don't have a serial console and the panic happens before dumpdev is set.
> 
> This may be related to rev.1.38 of subr_disk.c breaking most disk devices
> in the non-devfs case.  Their devsw() is 0 so spec_open() returns ENXIO.
> Places that don't check for a null devsw() would just panic.  I think

	I tried compiling a nodevfs kernel this weekend, and while it compiled and
found root ok, / was the only partition it could mount. Attempting to
access any other device got "device not configured" errors. Yes, I did make
the devices in the non-devfs /dev.

Doug

> > On Thu, 24 May 2001, Poul-Henning Kamp wrote:
> >
> > > phk         2001/05/24 13:27:17 PDT
> > >
> > >   Modified files:
> > >     sys/kern             subr_disk.c
> > >   Log:
> > >   Don't take the detour around devsw() to find out if the proto-cdevsw
> > >   is already initialized.
> > >
> > >   Revision  Changes    Path
> > >   1.38      +2 -4      src/sys/kern/subr_disk.c
> > >
> > >   http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/kern/subr_disk.c?r1=1.37&r2=1.38&cvsroot=freebsd

-- 
    I need someone really bad. Are you really bad?

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