Date: Sat, 07 Jun 2003 00:19:48 -0700 (PDT)
Message-Id: <20030607.001948.38705799.davem@redhat.com>
To: davidm@hpl.hp.com, davidm@napali.hpl.hp.com
Cc: manfred@colorfullife.com, axboe@suse.de, linux-kernel@vger.kernel.org
Subject: Re: problem with blk_queue_bounce_limit()
From: "David S. Miller" <davem@redhat.com>
In-Reply-To: <16097.37454.827982.278024@napali.hpl.hp.com>
References: <200306062013.h56KDcLe026713@napali.hpl.hp.com>
	<20030606.234401.104035537.davem@redhat.com>
	<16097.37454.827982.278024@napali.hpl.hp.com>
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   From: David Mosberger <davidm@napali.hpl.hp.com>
   Date: Sat, 7 Jun 2003 00:20:46 -0700

   >>>>> On Fri, 06 Jun 2003 23:44:01 -0700 (PDT), "David S. Miller" <davem@redhat.com> said:
   
     DaveM>    This sounds all very dramatic, but try as I might, all I
     DaveM> find is three places where PCI_DMA_BUS_IS_PHYS is used:
   
     DaveM> Fix your grep,
   
   What am I missing?
   
Sorry, I was meaning to mention BIO_VMERGE_BOUNDARY which works in
concert with PCI_DMA_BUS_IS_PHYS.  You really have to set it
accurately to get the most out of the block layer's ability to
take advantage of IOMMUs.
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