From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 9 Sep 2008 16:37:21 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [RFC][PATCH] Remove cgroup member from struct page Message-Id: <20080909163721.76a2249d.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <48C5F91D.5070500@linux.vnet.ibm.com> References: <20080901161927.a1fe5afc.kamezawa.hiroyu@jp.fujitsu.com> <200809011743.42658.nickpiggin@yahoo.com.au> <48BD0641.4040705@linux.vnet.ibm.com> <20080902190256.1375f593.kamezawa.hiroyu@jp.fujitsu.com> <48BD0E4A.5040502@linux.vnet.ibm.com> <20080902190723.841841f0.kamezawa.hiroyu@jp.fujitsu.com> <48BD119B.8020605@linux.vnet.ibm.com> <20080902195717.224b0822.kamezawa.hiroyu@jp.fujitsu.com> <48BD337E.40001@linux.vnet.ibm.com> <20080903123306.316beb9d.kamezawa.hiroyu@jp.fujitsu.com> <20080908152810.GA12065@balbir.in.ibm.com> <20080909125751.37042345.kamezawa.hiroyu@jp.fujitsu.com> <48C5F91D.5070500@linux.vnet.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: balbir@linux.vnet.ibm.com Cc: Nick Piggin , Andrew Morton , hugh@veritas.com, menage@google.com, xemul@openvz.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: On Mon, 08 Sep 2008 21:18:37 -0700 Balbir Singh wrote: > KAMEZAWA Hiroyuki wrote: > > On Mon, 8 Sep 2008 20:58:10 +0530 > > Balbir Singh wrote: > >> Sorry for the delay in sending out the new patch, I am traveling and > >> thus a little less responsive. Here is the update patch > >> > >> > > Hmm.. I've considered this approach for a while and my answer is that > > this is not what you really want. > > > > Because you just moves the placement of pointer from memmap to > > radix_tree both in GFP_KERNEL, total kernel memory usage is not changed. > > Agreed, but we do reduce the sizeof(struct page) without adding on to > page_cgroup's size. So why don't we want this? > Because it's depends on CONFIG. But ok, I'll recall my patches from grave. Maybe it can be a hint for you. 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/ . Don't email: email@kvack.org