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Date: Tue, 11 Dec 2001 14:04:09 -0800 (PST)
Message-Id: <20011211.140409.21593464.davem@redhat.com>
To: anton@samba.org
Cc: axboe@suse.de, plars@austin.ibm.com, linux-kernel@vger.kernel.org,
        torvalds@transmeta.com
Subject: Re: Scsi problems in 2.5.1-pre9
From: "David S. Miller" <davem@redhat.com>
In-Reply-To: <20011211212802.GA30520@krispykreme>
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	<20011211165426.GD13498@suse.de>
	<20011211212802.GA30520@krispykreme>
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   From: Anton Blanchard <anton@samba.org>
   Date: Wed, 12 Dec 2001 08:28:02 +1100
   
   This seems to be happening because we now allow sg merging through
   the BIOVEC_MERGEABLE macro. On ppc64 (and sparc64) we can coalesce two
   sg entries if the first one ends on a page boundary and the next one
   starts on a page boundary because we have an IO MMU. (I know that you
   know this, Im just explaining it for those who dont :)

In that case you perhaps should be defining DMA_CHUNK_SIZE in
asm/dma.h :-)
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