Date: Thu, 10 Mar 2005 14:01:37 -0800
From: Andrew Morton <akpm@osdl.org>
To: "Chen, Kenneth W" <kenneth.w.chen@intel.com>
Cc: linux-kernel@vger.kernel.org, axboe@suse.de
Subject: Re: Direct io on block device has performance regression on 2.6.x
 kernel
Message-Id: <20050310140137.09c7040b.akpm@osdl.org>
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	<200503102142.j2ALgCg04691@unix-os.sc.intel.com>
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"Chen, Kenneth W" <kenneth.w.chen@intel.com> wrote:
>
> Let me work on the readv/writev support (unless someone beat me to it).

Please also move it to the address_space_operations level.  Yes, there are
performance benefits from simply omitting the LFS checks, the mmap
consistency fixes, etc.  But they're there for a reason.

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