Date: Fri, 26 Feb 2010 14:01:05 +0100
From: Jens Axboe <jens.axboe@oracle.com>
To: Richard Kennedy <richard@rsk.demon.co.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>,
       Nikanth Karthikesan <knikanth@suse.de>, Jeff Moyer <jmoyer@redhat.com>,
       Vivek Goyal <vgoyal@redhat.com>, lkml <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] io: remove padding from io_context on 64bit builds
Message-ID: <20100226130105.GV1025@kernel.dk>
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On Fri, Feb 26 2010, Richard Kennedy wrote:
> On 64 bit builds when CONFIG_BLK_CGROUP=n (the default) this removes 8
> bytes of padding from structure io_context and drops its size from 72 to
> 64 bytes, so needing one fewer cachelines and allowing more objects per
> slab in it's kmem_cache.
> 
> Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>

Thanks Richard, applied.

-- 
Jens Axboe

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