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Date: Fri, 15 Apr 2011 17:34:48 +0200
From: Christoph Hellwig <hch@lst.de>
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Subject: Re: [Qemu-devel] [PATCH] raw-posix: Linearize direct I/O on
	Linux	NFS
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To: Stefan Hajnoczi <stefanha@gmail.com>
Cc: Kevin Wolf <kwolf@redhat.com>, Anthony Liguori <aliguori@us.ibm.com>, Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>, qemu-devel@nongnu.org, Khoa Huynh <khoa@us.ibm.com>, Badari Pulavarty <pbadari@us.ibm.com>, Christoph Hellwig <hch@lst.de>

On Fri, Apr 15, 2011 at 04:26:41PM +0100, Stefan Hajnoczi wrote:
> On Fri, Apr 15, 2011 at 4:05 PM, Christoph Hellwig <hch@lst.de> wrote:
> > NAK. ?Just wait for the bloody NFS client fix to get in instead of
> > adding crap like that.
> 
> That's totally fine if NFS client will be fixed in the near future but
> this doesn't seem likely:
> 
> http://www.spinics.net/lists/linux-nfs/msg20462.html

The code to use preadv/pwritev has been in qemu for over 2 years,
and it took people to notice the NFS slowdown until now, so don't
expect it to be fixed three days layer.

I can't event see you in the relevent threads arguing for getting it
fixed, so don't complain.