From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx168.postini.com [74.125.245.168]) by kanga.kvack.org (Postfix) with SMTP id 35F386B00E7 for ; Mon, 19 Mar 2012 03:58:13 -0400 (EDT) Received: from m1.gw.fujitsu.co.jp (unknown [10.0.50.71]) by fgwmail6.fujitsu.co.jp (Postfix) with ESMTP id 586AA3EE0B5 for ; Mon, 19 Mar 2012 16:58:11 +0900 (JST) Received: from smail (m1 [127.0.0.1]) by outgoing.m1.gw.fujitsu.co.jp (Postfix) with ESMTP id 3DE0245DE56 for ; Mon, 19 Mar 2012 16:58:11 +0900 (JST) Received: from s1.gw.fujitsu.co.jp (s1.gw.fujitsu.co.jp [10.0.50.91]) by m1.gw.fujitsu.co.jp (Postfix) with ESMTP id 250E545DE5A for ; Mon, 19 Mar 2012 16:58:11 +0900 (JST) Received: from s1.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s1.gw.fujitsu.co.jp (Postfix) with ESMTP id 168761DB804E for ; Mon, 19 Mar 2012 16:58:11 +0900 (JST) Received: from m106.s.css.fujitsu.com (m106.s.css.fujitsu.com [10.240.81.146]) by s1.gw.fujitsu.co.jp (Postfix) with ESMTP id C06AB1DB8046 for ; Mon, 19 Mar 2012 16:58:10 +0900 (JST) Message-ID: <4F66E6A5.10804@jp.fujitsu.com> Date: Mon, 19 Mar 2012 16:56:21 +0900 From: KAMEZAWA Hiroyuki MIME-Version: 1.0 Subject: [RFC][PATCH 0/3] page cgroup diet Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org Cc: cgroups@vger.kernel.org, Johannes Weiner , Michal Hocko , Hugh Dickins , Han Ying , Glauber Costa , "Aneesh Kumar K.V" , Andrew Morton , suleiman@google.com, n-horiguchi@ah.jp.nec.com, khlebnikov@openvz.org, Tejun Heo This is just an RFC...test is not enough yet. I know it's merge window..this post is just for sharing idea. This patch merges pc->flags and pc->mem_cgroup into a word. Then, memcg's overhead will be 8bytes per page(4096bytes?). Because this patch will affect all memory cgroup developers, I'd like to show patches before MM Summit. I think we can agree the direction to reduce size of page_cgroup..and finally integrate into 'struct page' (and remove cgroup_disable= boot option...) Patch 1/3 - introduce pc_to_mem_cgroup and hide pc->mem_cgroup Patch 2/3 - remove pc->mem_cgroup Patch 3/3 - remove memory barriers. I'm now wondering when this change should be merged.... Thanks, -Kame -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org