From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.6 required=3.0 tests=DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,T_DKIM_INVALID autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 11F07C43140 for ; Wed, 20 Jun 2018 19:36:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BDF7C20020 for ; Wed, 20 Jun 2018 19:36:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=cmpxchg.org header.i=@cmpxchg.org header.b="kbFv9gPZ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BDF7C20020 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=cmpxchg.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755002AbeFTTgO (ORCPT ); Wed, 20 Jun 2018 15:36:14 -0400 Received: from gum.cmpxchg.org ([85.214.110.215]:48640 "EHLO gum.cmpxchg.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754858AbeFTTgM (ORCPT ); Wed, 20 Jun 2018 15:36:12 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=cmpxchg.org ; s=x; h=In-Reply-To:Content-Type:MIME-Version:References:Message-ID:Subject: Cc:To:From:Date:Sender:Reply-To:Content-Transfer-Encoding:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=e+M0KcvkbVw+2eImN+ms6sV/25aIIbGAi8gsMKrQUnw=; b=kbFv9gPZZsKSSwHd4Ro9w3GoEc UXDblvR4BqXkeFFw9QPzwTKW2w0hYGZ/53zk3sbx3hjEBKRWwQZumcb8FpU0+BiCnsIO4TZSWJBPx WrVVY5jypvoot56ktR2PVE1cJRnFhvJtmgELDkwhMbI6cola2Pih7de+hVL7lYMZT7mc=; Date: Wed, 20 Jun 2018 15:38:36 -0400 From: Johannes Weiner To: Michal Hocko Cc: linux-mm@kvack.org, Greg Thelen , Shakeel Butt , Andrew Morton , LKML Subject: Re: [RFC PATCH] memcg, oom: move out_of_memory back to the charge path Message-ID: <20180620193836.GB4734@cmpxchg.org> References: <20180620103736.13880-1-mhocko@kernel.org> <20180620151812.GA2441@cmpxchg.org> <20180620153148.GO13685@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180620153148.GO13685@dhcp22.suse.cz> User-Agent: Mutt/1.10.0 (2018-05-17) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 20, 2018 at 05:31:48PM +0200, Michal Hocko wrote: > * Please note that mem_cgroup_oom_synchronize might fail to find a > * victim and then we have rely on mem_cgroup_oom_synchronize otherwise > * we would fall back to the global oom killer in pagefault_out_of_memory I can't quite figure out what this paragraph is trying to say. "oom_synchronize might fail [...] and we have to rely on oom_synchronize". Hm?