From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail143.messagelabs.com (mail143.messagelabs.com [216.82.254.35]) by kanga.kvack.org (Postfix) with ESMTP id E73328D0040 for ; Wed, 23 Mar 2011 09:40:49 -0400 (EDT) Received: by yxt33 with SMTP id 33so4388175yxt.14 for ; Wed, 23 Mar 2011 06:40:48 -0700 (PDT) Date: Wed, 23 Mar 2011 10:40:37 -0300 From: "Luis Claudio R. Goncalves" Subject: Re: [PATCH 2/5] Revert "oom: give the dying task a higher priority" Message-ID: <20110323134037.GP5212@uudg.org> References: <20110315153801.3526.A69D9226@jp.fujitsu.com> <20110322194721.B05E.A69D9226@jp.fujitsu.com> <20110322200657.B064.A69D9226@jp.fujitsu.com> <20110323164229.6b647004.kamezawa.hiroyu@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20110323164229.6b647004.kamezawa.hiroyu@jp.fujitsu.com> Sender: owner-linux-mm@kvack.org List-ID: To: KAMEZAWA Hiroyuki Cc: KOSAKI Motohiro , linux-kernel@vger.kernel.org, Andrew Morton , David Rientjes , Linus Torvalds , Rik van Riel , Oleg Nesterov , linux-mm , Andrey Vagin , Hugh Dickins On Wed, Mar 23, 2011 at 04:42:29PM +0900, KAMEZAWA Hiroyuki wrote: | On Tue, 22 Mar 2011 20:06:48 +0900 (JST) | KOSAKI Motohiro wrote: | | > This reverts commit 93b43fa55088fe977503a156d1097cc2055449a2. | > | > 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. | > | > The author need to resubmit it as adding knob and disabled | > by default if he really need this feature. | > | > Cc: Luis Claudio R. Goncalves | > Signed-off-by: KOSAKI Motohiro | | Acked-by: KAMEZAWA Hiroyuki The original patch was written to fix an issue observed in 2.6.24.7-rt. As the logic sounded useful, I ported it to upstream. Anyway,I am trying a few ideas to rework that patch. In the meantime, I'm pretty fine with reverting the commit. Acked-by: Luis Claudio R. Goncalves -- [ Luis Claudio R. Goncalves Bass - Gospel - RT ] [ Fingerprint: 4FDD B8C4 3C59 34BD 8BE9 2696 7203 D980 A448 C8F8 ] -- 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