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=-5.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 431ACC433E0 for ; Mon, 13 Jul 2020 11:05:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 12D8520773 for ; Mon, 13 Jul 2020 11:05:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chrisdown.name header.i=@chrisdown.name header.b="RqGITRMK" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729523AbgGMLFB (ORCPT ); Mon, 13 Jul 2020 07:05:01 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52748 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729303AbgGMLE7 (ORCPT ); Mon, 13 Jul 2020 07:04:59 -0400 Received: from mail-ed1-x542.google.com (mail-ed1-x542.google.com [IPv6:2a00:1450:4864:20::542]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BEF76C061794 for ; Mon, 13 Jul 2020 04:04:58 -0700 (PDT) Received: by mail-ed1-x542.google.com with SMTP id g20so13154215edm.4 for ; Mon, 13 Jul 2020 04:04:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chrisdown.name; s=google; h=date:from:to:cc:subject:message-id:mime-version:content-disposition :user-agent; bh=nN3m2m7pEWJxxgE22EVhuHKcD4TrCFPuvsPIp3KGX9k=; b=RqGITRMKNmMiYRdu6+vlFczkTYWFJp1c6+1yOC3ohAOzxc8vpAusqQEaQ0E2axiD3D QON4GHysm7Te5zUXV4Lz0GiISjc4xgU5T3b391ZpRcwJGbZ1amHXgAgqFQDjhLNJfgyG eX0sdzLY1TPzVvZ6Y5DHPyyoWITelQBhUSBaE= 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:mime-version :content-disposition:user-agent; bh=nN3m2m7pEWJxxgE22EVhuHKcD4TrCFPuvsPIp3KGX9k=; b=ElJHNfDOokTv3+di8wba5xkBAoYohChuZ38OiaAR0dlaA+lQmNIQcM0vEzKoEYdSwm vEYVJZXhponDyYttaMkbNn5IZaO7R84ePSDoRPfR5QF+NkTVZ0a6AmZFA9kt2oEw+pQ3 6/fDlkjnOcu70940mQvzMgRpo3XPnxiX8a6KJ8nabqQfdfT7iVR7oYcEEtIG7/y9tw4+ VTBfL5znDWVuoTAK/P6VBh5/jx/8FTRDH5CZ1F76pDamcqPBpQndNlILVxswazvZM/1l zZdox4+Nj07AZgrfbQYOpox64ks9svM9KbfU5csGgnn00ffzxvjyQugRZBmEuGYqJoTb ZLFw== X-Gm-Message-State: AOAM532PUZN1RkHvu6muTybrWp8I1hQISQ1gVrKJmb1zMcsSEr5QiM7g 5IpCpOayfNsIF2obm54+FV23aw== X-Google-Smtp-Source: ABdhPJxJ/mazTAbJfCnV5ZLs6gKzw7Mb01cM+wDRYPldnGl3iBlU+mkR/ggy29bNiaIxfIFLSI4DFw== X-Received: by 2002:a50:b5e3:: with SMTP id a90mr50641671ede.381.1594638297371; Mon, 13 Jul 2020 04:04:57 -0700 (PDT) Received: from localhost ([2620:10d:c093:400::5:ef88]) by smtp.gmail.com with ESMTPSA id j21sm11395375edq.20.2020.07.13.04.04.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Jul 2020 04:04:56 -0700 (PDT) Date: Mon, 13 Jul 2020 12:04:56 +0100 From: Chris Down To: Andrew Morton Cc: Johannes Weiner , Michal Hocko , Roman Gushchin , Yafang Shao , linux-mm@kvack.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 0/2] mm, memcg: memory.{low,min} reclaim fix & cleanup Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.14.5 (2020-06-23) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This series contains a fix for a edge case in my earlier protection calculation patches, and a patch to make the area overall a little more robust to hopefully help avoid this in future. Changes in v4: - Fix premature OOM when checking protection on root memcg. Thanks Naresh and Michal for helping debug. Chris Down (1): mm, memcg: Decouple e{low,min} state mutations from protection checks Yafang Shao (1): mm, memcg: Avoid stale protection values when cgroup is above protection include/linux/memcontrol.h | 95 ++++++++++++++++++++++++++++++++------ mm/memcontrol.c | 36 ++++++--------- mm/vmscan.c | 20 +++----- 3 files changed, 103 insertions(+), 48 deletions(-) -- 2.27.0