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Date: Wed, 27 Nov 2002 00:37:49 -0800
From: Andrew Morton <akpm@digeo.com>
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To: Jens Axboe <axboe@suse.de>
CC: Srihari Vijayaraghavan <harisri@bigpond.com>,
       Neil Brown <neilb@cse.unsw.edu.au>, linux-kernel@vger.kernel.org,
       Arjan van de Ven <arjanv@redhat.com>
Subject: Re: 2.5.49: kernel BUG at drivers/block/ll_rw_blk.c:1950!
References: <200211262203.20088.harisri@bigpond.com> <3DE3D1D1.BE5B30ED@digeo.com> <15843.54741.609413.371274@notabene.cse.unsw.edu.au> <200211271912.05131.harisri@bigpond.com> <20021127082931.GD19903@suse.de>
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Jens Axboe wrote:
> 
> On Wed, Nov 27 2002, Srihari Vijayaraghavan wrote:
> > Hello Neil,
> >
> > On Wednesday 27 November 2002 07:13, Neil Brown wrote:
> > > Srihari, could you possibly try with the following patch please to see
> > > if it gives more useful information.
> >
> > No worries. That did the trick.
> >
> > The following message appears just before the first oops:
> > Nov 27 18:56:32 localhost kernel: bio_add_page: want to add 4096 at 17658 but
> > only allowed 3072 - prepare to oops...
> 
> Neil, this is the problem. Currently a driver _must_ be able to accept a
> page worth of data at any location...

Even if pages are 64kbytes?
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