From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx161.postini.com [74.125.245.161]) by kanga.kvack.org (Postfix) with SMTP id 2B4E16B004A for ; Tue, 13 Mar 2012 01:15:32 -0400 (EDT) Received: from m3.gw.fujitsu.co.jp (unknown [10.0.50.73]) by fgwmail5.fujitsu.co.jp (Postfix) with ESMTP id 17D873EE0C0 for ; Tue, 13 Mar 2012 14:15:30 +0900 (JST) Received: from smail (m3 [127.0.0.1]) by outgoing.m3.gw.fujitsu.co.jp (Postfix) with ESMTP id EF3CA45DEB5 for ; Tue, 13 Mar 2012 14:15:29 +0900 (JST) Received: from s3.gw.fujitsu.co.jp (s3.gw.fujitsu.co.jp [10.0.50.93]) by m3.gw.fujitsu.co.jp (Postfix) with ESMTP id D4D7745DEB4 for ; Tue, 13 Mar 2012 14:15:29 +0900 (JST) Received: from s3.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s3.gw.fujitsu.co.jp (Postfix) with ESMTP id B9C541DB803F for ; Tue, 13 Mar 2012 14:15:29 +0900 (JST) Received: from ml14.s.css.fujitsu.com (ml14.s.css.fujitsu.com [10.240.81.134]) by s3.gw.fujitsu.co.jp (Postfix) with ESMTP id 539551DB8044 for ; Tue, 13 Mar 2012 14:15:29 +0900 (JST) Date: Tue, 13 Mar 2012 14:13:52 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [PATCH] memcg: revert fix to mapcount check for this release Message-Id: <20120313141352.e390056f.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: References: <1330719189-20047-1-git-send-email-n-horiguchi@ah.jp.nec.com> <1330719189-20047-2-git-send-email-n-horiguchi@ah.jp.nec.com> <20120309101658.8b36ce4f.kamezawa.hiroyu@jp.fujitsu.com> <20120309122448.92931dc6.kamezawa.hiroyu@jp.fujitsu.com> <20120309150109.51ba8ea1.nishimura@mxp.nes.nec.co.jp> <20120309162357.71c8c573.kamezawa.hiroyu@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Hugh Dickins Cc: Linus Torvalds , Andrew Morton , Daisuke Nishimura , Naoya Horiguchi , Andrea Arcangeli , Hillf Danton , linux-kernel@vger.kernel.org, linux-mm@kvack.org On Fri, 9 Mar 2012 13:37:32 -0800 (PST) Hugh Dickins wrote: > Respectfully revert commit e6ca7b89dc76 "memcg: fix mapcount check > in move charge code for anonymous page" for the 3.3 release, so that > it behaves exactly like releases 2.6.35 through 3.2 in this respect. > > Horiguchi-san's commit is correct in itself, 1 makes much more sense > than 2 in that check; but it does not go far enough - swapcount > should be considered too - if we really want such a check at all. > > We appear to have reached agreement now, and expect that 3.4 will > remove the mapcount check, but had better not make 3.3 different. > > Signed-off-by: Hugh Dickins Acked-by: KAMEZAWA Hiroyuki -- 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