From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with ESMTP id ACBBA8D0040 for ; Thu, 24 Mar 2011 19:41:37 -0400 (EDT) Received: from m1.gw.fujitsu.co.jp (unknown [10.0.50.71]) by fgwmail5.fujitsu.co.jp (Postfix) with ESMTP id A063D3EE081 for ; Fri, 25 Mar 2011 08:41:33 +0900 (JST) Received: from smail (m1 [127.0.0.1]) by outgoing.m1.gw.fujitsu.co.jp (Postfix) with ESMTP id 80AE845DE55 for ; Fri, 25 Mar 2011 08:41:33 +0900 (JST) Received: from s1.gw.fujitsu.co.jp (s1.gw.fujitsu.co.jp [10.0.50.91]) by m1.gw.fujitsu.co.jp (Postfix) with ESMTP id 6A07545DE54 for ; Fri, 25 Mar 2011 08:41:33 +0900 (JST) Received: from s1.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s1.gw.fujitsu.co.jp (Postfix) with ESMTP id 5B0B7E38002 for ; Fri, 25 Mar 2011 08:41:33 +0900 (JST) Received: from m107.s.css.fujitsu.com (m107.s.css.fujitsu.com [10.240.81.147]) by s1.gw.fujitsu.co.jp (Postfix) with ESMTP id 25891E08001 for ; Fri, 25 Mar 2011 08:41:33 +0900 (JST) Date: Fri, 25 Mar 2011 08:35:00 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [PATCH] Accelerate OOM killing Message-Id: <20110325083500.0ec98acb.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <1300960353-2596-1-git-send-email-minchan.kim@gmail.com> References: <1300960353-2596-1-git-send-email-minchan.kim@gmail.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: Minchan Kim Cc: Andrew Morton , linux-mm , LKML , KOSAKI Motohiro , Andrey Vagin On Thu, 24 Mar 2011 18:52:33 +0900 Minchan Kim wrote: > When I test Andrey's problem, I saw the livelock and sysrq-t says > there are many tasks in cond_resched after try_to_free_pages. > > If did_some_progress is false, cond_resched could delay oom killing so > It might be killing another task. > > This patch accelerates oom killing without unnecessary giving CPU > to another task. It could help avoding unnecessary another task killing > and livelock situation a litte bit. > > Cc: KOSAKI Motohiro > Cc: KAMEZAWA Hiroyuki > Cc: Andrey Vagin > Signed-off-by: Minchan Kim Reviewed-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