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=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 EBC8EC433E1 for ; Thu, 28 May 2020 15:03:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CBCFB2075F for ; Thu, 28 May 2020 15:03:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1590678200; bh=yCrRflPa+owv3moiIgb+n52ywNy7D1ovIWfQG7sa6Jc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=0uh4wah08jKakoJOqrwNsM6uwQiiDPfzKp+bUEh3DS7+qQMmJ14WIgcf9oUin60MA Ij+PKka+7JcwK41/2AzouTfQDhhQ7vVYwa/zY8VFRSdzmPk9PXX/2+BXKvWcd2wr8A 6KG0R7JVl/qVZyPdFGzGOPmrBTCEKlbRjYMUKJVY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2404156AbgE1PDS (ORCPT ); Thu, 28 May 2020 11:03:18 -0400 Received: from mail-wm1-f66.google.com ([209.85.128.66]:35115 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2403912AbgE1PDQ (ORCPT ); Thu, 28 May 2020 11:03:16 -0400 Received: by mail-wm1-f66.google.com with SMTP id n5so3561883wmd.0; Thu, 28 May 2020 08:03:13 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=evz1lutsdd2Eqt9o4+KgC57g/gR26qB8cQ2KV6NODWs=; b=VJx/HwbXl5o/d18rL9jXFWIru48CRcbu6zMa/nbL8uHL5RkpLFzluxqMPSHkiUACnq 8fpdo/KWej952ZGVeM52GUKte5NExvG3LpYfxGglSAuy0TBPmQxlIIK82X7RgOLgJmXB +pjpUIOL/bVQorU96JoWT/ysuQZBRxRchyXcPh4B01yzJEnbYuNZSzg4Di2PgdvnQw22 ksF9CdT4clBfpm1g7Phqf34d9bI09L/NOjel519iuryPdW9UVpqHeITg1pNWQgwAcNU0 V4UJuQwu9Zb4g6+2NLS3L5y+wF758rtkI/+FjSh/df4TUBaKBHx9YBdCX2ufGjpBOo78 eMbg== X-Gm-Message-State: AOAM5335KeIBGypNdrt0JATwyrPXP/uVxG66RygJwBLuKrIswRUKlp8s U+85bywfUrHGjRi+1zXV9K4= X-Google-Smtp-Source: ABdhPJzniI6Aw1b/FqGaEPNB/a6M/vRt8hKQ5Zx5UYlLdgljMoGjhh+KSxCloB6yCJzH8NHlfHrceg== X-Received: by 2002:a1c:b0c8:: with SMTP id z191mr3947280wme.165.1590678193035; Thu, 28 May 2020 08:03:13 -0700 (PDT) Received: from localhost (ip-37-188-185-40.eurotel.cz. [37.188.185.40]) by smtp.gmail.com with ESMTPSA id k14sm6163539wrq.97.2020.05.28.08.03.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 28 May 2020 08:03:11 -0700 (PDT) Date: Thu, 28 May 2020 17:03:10 +0200 From: Michal Hocko To: Naresh Kamboju Cc: Yafang Shao , Chris Down , Anders Roxell , "Linux F2FS DEV, Mailing List" , linux-ext4 , linux-block , Andrew Morton , open list , Linux-Next Mailing List , linux-mm , Arnd Bergmann , Andreas Dilger , Jaegeuk Kim , Theodore Ts'o , Chao Yu , Hugh Dickins , Andrea Arcangeli , Matthew Wilcox , Chao Yu , lkft-triage@lists.linaro.org, Johannes Weiner , Roman Gushchin , Cgroups Subject: Re: mm: mkfs.ext4 invoked oom-killer on i386 - pagecache_get_page Message-ID: <20200528150310.GG27484@dhcp22.suse.cz> References: <20200519075213.GF32497@dhcp22.suse.cz> <20200519084535.GG32497@dhcp22.suse.cz> <20200520190906.GA558281@chrisdown.name> <20200521095515.GK6462@dhcp22.suse.cz> <20200521163450.GV6462@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Fri 22-05-20 02:23:09, Naresh Kamboju wrote: > My apology ! > As per the test results history this problem started happening from > Bad : next-20200430 (still reproducible on next-20200519) > Good : next-20200429 > > The git tree / tag used for testing is from linux next-20200430 tag and reverted > following three patches and oom-killer problem fixed. > > Revert "mm, memcg: avoid stale protection values when cgroup is above > protection" > Revert "mm, memcg: decouple e{low,min} state mutations from protectinn checks" > Revert "mm-memcg-decouple-elowmin-state-mutations-from-protection-checks-fix" The discussion has fragmented and I got lost TBH. In http://lkml.kernel.org/r/CA+G9fYuDWGZx50UpD+WcsDeHX9vi3hpksvBAWbMgRZadb0Pkww@mail.gmail.com you have said that none of the added tracing output has triggered. Does this still hold? Because I still have a hard time to understand how those three patches could have the observed effects. -- Michal Hocko SUSE Labs