linux-kernel - Re: [PATCH] virtio_blk: don't bounce highmem requests

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Message-ID: <20090708181053.GA10552@lst.de>
Date:	Wed, 8 Jul 2009 20:10:53 +0200
From:	Christoph Hellwig <hch@....de>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	Christoph Hellwig <hch@....de>, linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org
Subject: Re: [PATCH] virtio_blk: don't bounce highmem requests

On Tue, Jun 23, 2009 at 04:42:52PM +0930, Rusty Russell wrote:
> On Sun, 21 Jun 2009 04:02:15 am Christoph Hellwig wrote:
> > Looks like I sent a patch that doesn't actually compile because qui
> > decided to apply those fixes to a different one.  Here's the correc
> > one:
> >
> > --
> >
> > Subject: virtio_blk: don't bounce highmem requests
> > From: Christoph Hellwig <hch@....de>
> >
> > By default a block driver bounces highmem requests, but virtio-blk is
> > perfectly fine with any request that fit into it's 64 bit addressing
> > scheme, mapped in the kernel virtual space or not.
> 
> Thanks, applied.

Can you forward it to Linus for 2.6.31?  It's a trivial fix for an issue
causing a lot of pain to people with highmem enabled.

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