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
Date: Fri, 26 Feb 2010 14:01:05 +0100 [thread overview]
Message-ID: <20100226130105.GV1025@kernel.dk> (raw)
In-Reply-To: <1267188960.2077.10.camel@localhost>
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
prev parent reply other threads:[~2010-02-26 13:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-26 12:56 [PATCH] io: remove padding from io_context on 64bit builds Richard Kennedy
2010-02-26 13:01 ` Jens Axboe [this message]
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