From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail137.messagelabs.com (mail137.messagelabs.com [216.82.249.19]) by kanga.kvack.org (Postfix) with SMTP id A99FA8D0039 for ; Thu, 27 Jan 2011 22:28:58 -0500 (EST) Received: from m4.gw.fujitsu.co.jp (unknown [10.0.50.74]) by fgwmail5.fujitsu.co.jp (Postfix) with ESMTP id 34A993EE0B5 for ; Fri, 28 Jan 2011 12:28:56 +0900 (JST) Received: from smail (m4 [127.0.0.1]) by outgoing.m4.gw.fujitsu.co.jp (Postfix) with ESMTP id 119A145DE50 for ; Fri, 28 Jan 2011 12:28:56 +0900 (JST) Received: from s4.gw.fujitsu.co.jp (s4.gw.fujitsu.co.jp [10.0.50.94]) by m4.gw.fujitsu.co.jp (Postfix) with ESMTP id EEC6745DE51 for ; Fri, 28 Jan 2011 12:28:55 +0900 (JST) Received: from s4.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s4.gw.fujitsu.co.jp (Postfix) with ESMTP id E121B1DB8040 for ; Fri, 28 Jan 2011 12:28:55 +0900 (JST) Received: from m108.s.css.fujitsu.com (m108.s.css.fujitsu.com [10.249.87.108]) by s4.gw.fujitsu.co.jp (Postfix) with ESMTP id ACE921DB803E for ; Fri, 28 Jan 2011 12:28:55 +0900 (JST) Date: Fri, 28 Jan 2011 12:22:29 +0900 From: KAMEZAWA Hiroyuki Subject: [BUGFIX][PATCH 0/4] Fixes for memcg with THP Message-Id: <20110128122229.6a4c74a2.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 To: "linux-mm@kvack.org" Cc: "linux-kernel@vger.kernel.org" , "hannes@cmpxchg.org" , "nishimura@mxp.nes.nec.co.jp" , "balbir@linux.vnet.ibm.com" List-ID: On recent -mm, when I run make -j 8 under 200M limit of memcg, as == # mount -t cgroup none /cgroup/memory -o memory # mkdir /cgroup/memory/A # echo 200M > /cgroup/memory/A/memory.limit_in_bytes # echo $$ > /cgroup/memory/A/tasks # make -j 8 kernel == I see hangs with khugepaged. That's because memcg's memory reclaim routine doesn't handle HUGE_PAGE request in proper way. And khugepaged doesn't know about memcg. This patch set is for fixing above hang. Patch 1-3 seems obvious and has the same concept as patches in RHEL. Patch 4 may need discussion. I think this version is much simpler because I dropped almost all cosmetics. Please review. This patch is onto mmotm-0125. 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 policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: email@kvack.org