From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from sd0109e.au.ibm.com (d23rh905.au.ibm.com [202.81.18.225]) by e23smtp03.au.ibm.com (8.13.1/8.13.1) with ESMTP id m8R6vEYZ021894 for ; Sat, 27 Sep 2008 16:57:14 +1000 Received: from d23av02.au.ibm.com (d23av02.au.ibm.com [9.190.235.138]) by sd0109e.au.ibm.com (8.13.8/8.13.8/NCO v9.1) with ESMTP id m8R6wOm7226586 for ; Sat, 27 Sep 2008 16:58:26 +1000 Received: from d23av02.au.ibm.com (loopback [127.0.0.1]) by d23av02.au.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id m8R6wO5Z022549 for ; Sat, 27 Sep 2008 16:58:24 +1000 Message-ID: <48DDD98D.3050303@linux.vnet.ibm.com> Date: Sat, 27 Sep 2008 12:28:21 +0530 From: Balbir Singh Reply-To: balbir@linux.vnet.ibm.com MIME-Version: 1.0 Subject: Re: [PATCH 5/12] memcg make page_cgroup->flags atomic References: <20080925151124.25898d22.kamezawa.hiroyu@jp.fujitsu.com> <20080925151734.5b24d494.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20080925151734.5b24d494.kamezawa.hiroyu@jp.fujitsu.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: KAMEZAWA Hiroyuki Cc: "linux-mm@kvack.org" , "nishimura@mxp.nes.nec.co.jp" , "xemul@openvz.org" , Andrew Morton , LKML , Dave Hansen , ryov@valinux.co.jp List-ID: KAMEZAWA Hiroyuki wrote: > This patch makes page_cgroup->flags to be atomic_ops and define > functions (and macros) to access it. > > This patch itself makes memcg slow but this patch's final purpose is > to remove lock_page_cgroup() and allowing fast access to page_cgroup. > (And total performance will increase after all patches applied.) > Looks good to me Acked-by: Balbir Singh provided we push in the lockless ones too :) -- Balbir -- 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/ . Don't email: email@kvack.org