From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with ESMTP id 5DE31900086 for ; Wed, 13 Apr 2011 14:41:28 -0400 (EDT) Received: from wpaz9.hot.corp.google.com (wpaz9.hot.corp.google.com [172.24.198.73]) by smtp-out.google.com with ESMTP id p3DIfL1Q008142 for ; Wed, 13 Apr 2011 11:41:22 -0700 Received: from pzk12 (pzk12.prod.google.com [10.243.19.140]) by wpaz9.hot.corp.google.com with ESMTP id p3DIf3uc000558 (version=TLSv1/SSLv3 cipher=RC4-SHA bits=128 verify=NOT) for ; Wed, 13 Apr 2011 11:41:20 -0700 Received: by pzk12 with SMTP id 12so1097046pzk.25 for ; Wed, 13 Apr 2011 11:41:20 -0700 (PDT) Date: Wed, 13 Apr 2011 11:41:18 -0700 (PDT) From: David Rientjes Subject: Re: [PATCH 2/4] remove boost_dying_task_prio() In-Reply-To: <20110411143215.0074.A69D9226@jp.fujitsu.com> Message-ID: References: <20110411142949.006C.A69D9226@jp.fujitsu.com> <20110411143215.0074.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: KOSAKI Motohiro Cc: Andrey Vagin , Minchan Kim , KAMEZAWA Hiroyuki , "Luis Claudio R. Goncalves" , LKML , linux-mm , Oleg Nesterov , Andrew Morton , Linus Torvalds On Mon, 11 Apr 2011, KOSAKI Motohiro wrote: > This is a almost revert commit 93b43fa (oom: give the dying > task a higher priority). > > The commit dramatically improve oom killer logic when fork-bomb > occur. But, I've found it has nasty corner case. Now cpu cgroup > has strange default RT runtime. It's 0! That said, if a process > under cpu cgroup promote RT scheduling class, the process never > run at all. > > Eventually, kernel may hang up when oom kill occur. > I and Luis who original author agreed to disable this logic at > once. > > Signed-off-by: KOSAKI Motohiro > Acked-by: Luis Claudio R. Goncalves > Acked-by: KAMEZAWA Hiroyuki > Reviewed-by: Minchan Kim Acked-by: David Rientjes -- 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