Date: Tue, 22 Feb 2011 16:21:47 -0700
From: Jonathan Corbet <corbet@lwn.net>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: Andrea Righi <arighi@develer.com>,
        Balbir Singh <balbir@linux.vnet.ibm.com>,
        Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>,
        KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
        Greg Thelen <gthelen@google.com>,
        Wu Fengguang <fengguang.wu@intel.com>,
        Gui Jianfeng <guijianfeng@cn.fujitsu.com>,
        Ryo Tsuruta <ryov@valinux.co.jp>,
        Hirokazu Takahashi <taka@valinux.co.jp>, Jens Axboe <axboe@kernel.dk>,
        Andrew Morton <akpm@linux-foundation.org>,
        containers@lists.linux-foundation.org, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/5] page_cgroup: make page tracking available for blkio
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On Tue, 22 Feb 2011 18:06:30 -0500
Vivek Goyal <vgoyal@redhat.com> wrote:

> I think John suggested replacing mem_cgroup pointer with css_set so that
> size of the strcuture does not increase but it leads extra level of 
> indirection.

That is what I was thinking.  But I did also say it's probably premature
generalization at this point, especially given that there'd be a runtime
cost.

jon
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