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Subject: Re: 2.6.17-rc4-mm3 cfq oops->panic w. fs damage
From: Mike Galbraith <efault@gmx.de>
To: Al Viro <viro@ftp.linux.org.uk>
Cc: lkml <linux-kernel@vger.kernel.org>, Jens Axboe <axboe@suse.de>
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Date: Mon, 29 May 2006 13:00:40 +0200
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On Sun, 2006-05-28 at 10:24 +0200, Mike Galbraith wrote: 
> On Sun, 2006-05-28 at 10:03 +0200, Mike Galbraith wrote:
> 
> > Yup, mm3 makes reliable kaboom.
> > 
> > I suppose the first thing to do is see if it's cfq, and then maybe toss
> > a dart at the patch list.
> 
> That was too easy.  It's git-cfq.patch.

Too easy indeed.

After staring at these changes, and not having anything poke me in the
eye that looked like it might cause list corruption, I decided to try
them in a different kernel.  I put them into 2.6.16-rt25, and there they
work peachy.  A diff of 2.6.16-rt25+git-cfq.patch->2.6.17-rc4-mm3 shows
what I was expecting (locking changes), but it's embedded in ~1000 lines
of diff, and doesn't look particularly trivial.

Hi Jens <punt> :)

	-Mike

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