From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: [PATCH] libata: reorder ata_queued_cmd to remove alignment padding on 64 bit builds Date: Fri, 17 Sep 2010 02:13:19 -0400 Message-ID: <4C9306FF.70202@pobox.com> References: <1284117583.1903.8.camel@castor.rsk> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-qy0-f181.google.com ([209.85.216.181]:34952 "EHLO mail-qy0-f181.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752551Ab0IQGNX (ORCPT ); Fri, 17 Sep 2010 02:13:23 -0400 In-Reply-To: <1284117583.1903.8.camel@castor.rsk> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Richard Kennedy Cc: Tejun Heo , lkml , linux-ide@vger.kernel.org On 09/10/2010 07:19 AM, Richard Kennedy wrote: > Reorder structure ata_queued_cmd to remove 8 bytes of alignment padding > on 64 bit builds& therefore reduce the size of structure ata_port by > 256 bytes. > > Overall this will have little impact, other than reducing the amount of > memory that is cleared when allocating ata_ports. > > Signed-off-by: Richard Kennedy > ---- > patch against 2.6.36-rc3 > compiled& tested on x86_64 > > I've been running this patch for a couple of weeks with no apparent > issues. > > regards applied