From mboxrd@z Thu Jan  1 00:00:00 1970
From: Fengguang Wu <fengguang.wu@intel.com>
Subject: Re: [PATCH] fs: remove 8 bytes of padding from struct
 writeback_control on 64 bit builds
Date: Wed, 25 Apr 2012 21:57:34 +0800
Message-ID: <20120425135734.GA4995@localhost>
References: <1335361985.1885.16.camel@castor.rsk>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Cc: lkml <linux-kernel@vger.kernel.org>,
	linux-fsdevel <linux-fsdevel@vger.kernel.org>,
	Jan Kara <jack@suse.cz>
To: Richard Kennedy <richard@rsk.demon.co.uk>
Return-path: <linux-kernel-owner@vger.kernel.org>
Content-Disposition: inline
In-Reply-To: <1335361985.1885.16.camel@castor.rsk>
Sender: linux-kernel-owner@vger.kernel.org
List-Id: linux-fsdevel.vger.kernel.org

On Wed, Apr 25, 2012 at 02:53:05PM +0100, Richard Kennedy wrote:
> Reorder structure writeback_control to remove 8 bytes of padding on 64
> bit builds, this shrinks its size from 48 to 40 bytes.
> 
> This structure is always on the stack and uses C99 named initialisation,
> so should be safe and have a small impact on stack usage.
>     
> Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
> 
> --
> 
> patch against v3.4-rc4
> compiled and tested on x86_64
> 
> I've been running my desktop with this patch applied for several days
> and have not seen any problems.
> regards
> Richard

Applied, thanks!

Fengguang