linux-kernel - Re: [PATCH 1 of 5] xen/blkfront: Make sure we don't use bounce buffers, we don't need them

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Message-ID: <4840AFFD.1000606@pobox.com>
Date:	Fri, 30 May 2008 21:55:09 -0400
From:	Jeff Garzik <jgarzik@...ox.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	Jens Axboe <jens.axboe@...cle.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1 of 5] xen/blkfront: Make sure we don't use bounce buffers,
 we don't need them

Jeremy Fitzhardinge wrote:
> From: Ian Campbell <ian.campbell@...source.com>
> 
> [ linux-2.6.18-xen changeset 667228bf8fc5 ]
> 
> Signed-off-by: Ian Campbell <ian.campbell@...source.com>
> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@...rix.com>
> ---
>  drivers/block/xen-blkfront.c |    3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
> --- a/drivers/block/xen-blkfront.c
> +++ b/drivers/block/xen-blkfront.c
> @@ -324,6 +324,9 @@
>  	/* Make sure buffer addresses are sector-aligned. */
>  	blk_queue_dma_alignment(rq, 511);
>  
> +	/* Make sure we don't use bounce buffers. */
> +	blk_queue_bounce_limit(rq, BLK_BOUNCE_ANY);
> +
>  	gd->queue = rq;

ACK


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