From: Christoph Hellwig <hch@infradead.org>
Subject: Re: [NFS] [GIT] NFS client update for 2.6.16
Date: Tue, 21 Mar 2006 17:46:34 +0000
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Cc: Linus Torvalds <torvalds@osdl.org>, linux-kernel@vger.kernel.org,
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To: Trond Myklebust <trond.myklebust@fys.uio.no>
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> commit 47989d7454398827500d0e73766270986a3b488f
> Author: Chuck Lever <cel@netapp.com>
> Date:   Mon Mar 20 13:44:32 2006 -0500
> 
>     NFS: remove support for multi-segment iovs in the direct write path
>     
>     Eliminate the persistent use of automatic storage in all parts of the
>     NFS client's direct write path to pave the way for introducing support
>     for aio against files opened with the O_DIRECT flag.

NACK.  We have patches pending that consolidate ->aio_read/write and
->read/writev into one operation.  this change is completely counterproductive
towards that goal which has been discussed on -fsdevel for a while.