From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from d01relay02.pok.ibm.com (d01relay02.pok.ibm.com [9.56.227.234]) by e6.ny.us.ibm.com (8.13.8/8.13.8) with ESMTP id m8CGM5SK026670 for ; Fri, 12 Sep 2008 12:22:05 -0400 Received: from d01av04.pok.ibm.com (d01av04.pok.ibm.com [9.56.224.64]) by d01relay02.pok.ibm.com (8.13.8/8.13.8/NCO v9.1) with ESMTP id m8CGJHOU227654 for ; Fri, 12 Sep 2008 12:19:17 -0400 Received: from d01av04.pok.ibm.com (loopback [127.0.0.1]) by d01av04.pok.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id m8CGJGHu022595 for ; Fri, 12 Sep 2008 12:19:16 -0400 Subject: Re: [RFC] [PATCH 8/9] memcg: remove page_cgroup pointer from memmap From: Dave Hansen In-Reply-To: <48CA9500.5060309@linux.vnet.ibm.com> References: <20080911200855.94d33d3b.kamezawa.hiroyu@jp.fujitsu.com> <20080911202249.df6026ae.kamezawa.hiroyu@jp.fujitsu.com> <48CA9500.5060309@linux.vnet.ibm.com> Content-Type: text/plain Date: Fri, 12 Sep 2008 09:19:14 -0700 Message-Id: <1221236354.17910.18.camel@nimitz> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: balbir@linux.vnet.ibm.com Cc: KAMEZAWA Hiroyuki , "xemul@openvz.org" , "hugh@veritas.com" , linux-mm@kvack.org, linux-kernel@vger.kernel.org, menage@google.com, Dave Hansen List-ID: On Fri, 2008-09-12 at 09:12 -0700, Balbir Singh wrote: > 3. Integrate with sparsemem (last resort for performance), Dave Hansen suggested > adding a mem_section member and using that. I also suggested using the sparsemem *structure* without necessarily using it for pfn_to_page() lookups. That'll take some rework to separate out SPARSEMEM_FOR_MEMMAP vs. CONFIG_SPARSE_STRUCTURE_FUN, but it should be able to be prototyped pretty fast. -- Dave -- 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