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Date: Sun, 29 Aug 2004 15:57:34 -0700
From: Andrew Morton <akpm@osdl.org>
To: Krzysztof "Sierota (o2.pl/tlen.pl)" <Krzysztof.Sierota@firma.o2.pl>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.6.9-rc1-mm1 kernel BUG at fs/jbd/checkpoint.c:646!
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Krzysztof "Sierota (o2.pl/tlen.pl)" <Krzysztof.Sierota@firma.o2.pl> wrote:
>
> this keeps happening on the SMP highmem box under heavy sync IO load.
> 
>  kernel BUG at fs/jbd/checkpoint.c:646!

Are you using the data=journal mount option?