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To: Daniel McNeil <daniel@osdl.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [rfc patch 2/2] direct-io: remove address alignment check
References: <1121298112.6025.21.camel@ibm-c.pdx.osdl.net.suse.lists.linux.kernel>
From: Andi Kleen <ak@suse.de>
Date: 14 Jul 2005 15:18:11 +0200
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Daniel McNeil <daniel@osdl.org> writes:

> This patch relaxes the direct i/o alignment check so that user addresses
> do not have to be a multiple of the device block size.

The original reason for this limit was that lots of drivers
(not only IDE) explode when you give them odd sizes. Sometimes
it is even worse.

I doubt all of them have been fixed.

Very risky change.

-Andi