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=-6.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, 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 2F461C433E1 for ; Fri, 26 Mar 2021 17:00:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id F0C8D61A36 for ; Fri, 26 Mar 2021 17:00:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230287AbhCZRAU (ORCPT ); Fri, 26 Mar 2021 13:00:20 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:33663 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230197AbhCZRAK (ORCPT ); Fri, 26 Mar 2021 13:00:10 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1616778008; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=zDI1NIJimYujCPbkiU9AZ+QP7d2Pl5mPSzE4i31Ne64=; b=bZTK/0dbqMQpzi3rYR8Y8DuCwlJ/oXa3Gr0L8MLRsvBLmFk57yhzBIsWZvuGy8+z52kUUj FrdLm9+81tN5z4nY1TKntapPhG4jvpRabt3X7M+RDcT+nZkr0Vf6n2iQD8IkvWPrLEuQqp gogdfML6MlPDcm3ODqgHxGCH/w+ha4E= Received: from mail-wm1-f71.google.com (mail-wm1-f71.google.com [209.85.128.71]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-354-crML0KyYOGuLtOVESFxO0g-1; Fri, 26 Mar 2021 13:00:07 -0400 X-MC-Unique: crML0KyYOGuLtOVESFxO0g-1 Received: by mail-wm1-f71.google.com with SMTP id r65-20020a1c2b440000b029010f4ee06223so2621037wmr.1 for ; Fri, 26 Mar 2021 10:00:07 -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=zDI1NIJimYujCPbkiU9AZ+QP7d2Pl5mPSzE4i31Ne64=; b=Dh0yVvCFOYMAbSrweTl4KI3QJ17OKCrgop0Lxg5+PPdCQ8TrSizaDo4QnUeq/IPmYH TCWpN5waBs3Cxf0KQsXOswGxQPy4sx59raEkDQ/XvjNWvq6zR6W6l5Z/pVp+xiZeLtvB QJmrmw0f/nKKE27sgXSihTBrcvqtnZTkmIMyBV8oW5lKfTQd1C+0B32sZsI4sCsHH5Av uEYB8SA6Y5bARWB4N3R3YD3ptWOu9x+oGowVkCPvgQORGURh+Ko5q2bNJh6bTQV3bMNP 2Oi8pK98GA9jiQZxg3lEAae6Kpb3KEkkM1AQCbhDCTz0WGPvDAsDQkFtXFKhZAIA9xOD PMrw== X-Gm-Message-State: AOAM532PbpzXAjkvG5hHPgCu5044c4lVQjBUBKJnDNxh+kUUqIGxnYSM ei02gTmWNwC5gtelMYwRTFq1grLLaerd2PBfFMp/Wk8G7YBxIMe9pRXBJW4rq0/afW0AjUJjk39 +v5b3vTa2RyVkp9EwoBPeAIo= X-Received: by 2002:a05:6000:2c8:: with SMTP id o8mr15591463wry.407.1616778005932; Fri, 26 Mar 2021 10:00:05 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwfaEr3I/dLH/2y0YJ1ZgF2BxggRLlTouqN6WfZyBmabs7IMKC8CyqSUQPboNTSAzSaKjlwYA== X-Received: by 2002:a05:6000:2c8:: with SMTP id o8mr15591450wry.407.1616778005758; Fri, 26 Mar 2021 10:00:05 -0700 (PDT) Received: from localhost (cpc111743-lutn13-2-0-cust979.9-3.cable.virginm.net. [82.17.115.212]) by smtp.gmail.com with ESMTPSA id m132sm11824941wmf.45.2021.03.26.10.00.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 Mar 2021 10:00:05 -0700 (PDT) Date: Fri, 26 Mar 2021 17:00:04 +0000 From: Aaron Tomlin To: Michal Hocko Cc: linux-mm@kvack.org, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, Vlastimil Babka Subject: Re: [PATCH] mm/page_alloc: try oom if reclaim is unable to make forward progress Message-ID: <20210326170004.ahzt4xhe6msje7wl@ava.usersys.com> References: <20210315165837.789593-1-atomlin@redhat.com> <20210319172901.cror2u53b7caws3a@ava.usersys.com> <20210325210159.r565fvfitoqeuykp@ava.usersys.com> <20210326112254.jy5jkiwtgj3pqkt2@ava.usersys.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri 2021-03-26 16:36 +0100, Michal Hocko wrote: > We should be focusing on the compaction retry logic and see whether we > can have some "run away" scenarios there. Fair enough. > Seeing so many retries without compaction bailing out sounds like a bug > in that retry logic. Agreed - I will continue to look into this. Kind regards, -- Aaron Tomlin