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[2620:137:e000::1:18]) by mx.google.com with ESMTPS id q11-20020a170902bd8b00b0015620aa1c68si886347pls.451.2022.04.07.16.11.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 Apr 2022 16:11:02 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20210112 header.b=LTNa5mWx; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 8B45A154494; Thu, 7 Apr 2022 15:42:56 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232265AbiDGWow (ORCPT + 99 others); Thu, 7 Apr 2022 18:44:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35660 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232228AbiDGWou (ORCPT ); Thu, 7 Apr 2022 18:44:50 -0400 Received: from mail-pj1-x104a.google.com (mail-pj1-x104a.google.com [IPv6:2607:f8b0:4864:20::104a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DE7CA152823 for ; Thu, 7 Apr 2022 15:42:48 -0700 (PDT) Received: by mail-pj1-x104a.google.com with SMTP id x3-20020a17090a6c0300b001cab7230b41so4264616pjj.9 for ; Thu, 07 Apr 2022 15:42:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:message-id:mime-version:subject:from:to:cc; bh=6TC/fcsrdvkufWtZCTMpd2QTNgth1gYBFeUR7KMTO3o=; b=LTNa5mWxit+bHznZj3tr4HARnvMRLGMcNuJSn+VXMiSstVWYzjo8RrN+E1ms6VTeiU nFOM753PV0ux/FjpS7u2I8H53Ls+iBrNQ2VqMkJ4/013wYWzOkTOMvmPlfAViGmsT7JI wz5hfFfmebTV4K8w6FLtQJbWTKHCf1RVY3yK5HCK8UW5AxATe0Hhq4JXxY2zummMacbw 7WdJ0FJA8Bcsx0SQlqs5lD1wWFqEVYOi93AQ+e8nhUdpDGM/3Zb7Qs408eH4czs6r98a v6ypkffmKqRINf6d0u5JEFrGrfWgcL+egNOTvvTXneQR/WkDoHb0cWVv6VuyGlMHSD9n t4YA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=6TC/fcsrdvkufWtZCTMpd2QTNgth1gYBFeUR7KMTO3o=; b=MydfHOzytN45zYCyo3TgdPQL0i9S5DrPivGyskIXC3laQdjJpTRSNx2pkYR8N6U399 2EPs58m+Yo6uvWhszRAhY2Xui6oVel1VujHvUb3+fWtdJ4wlt5d+la0kHP2xb82AF5OS x1LHZczMHIFIUbS3t8evBI10w9O4dHMLGcSA7FO81hlieH9uGxzIFY+6wnGwSI3Mz0x3 Y9HE4SBQCmoJVfur8HkICtn3T/oj2HAE7urniuZzSny7qeIFQiuKC2WhW5KfONcyN9OF zKtdSifd61P2QcyceChoI1KfVF24pyargvXOXSw8kSubzZ5nGKN7l/FLm9G2mvuzGpcR x0Zw== X-Gm-Message-State: AOAM532AE9i/Us0RFAXLi0WsT990qJ8NRMw1NHLBXL/7qiYdDpYzXLx6 n0OaBoNIiEmTaiN8X8Um/no2npff4dP7EQC4 X-Received: from yosry.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:2327]) (user=yosryahmed job=sendgmr) by 2002:a65:4b8f:0:b0:39c:c85d:7e7a with SMTP id t15-20020a654b8f000000b0039cc85d7e7amr4074145pgq.324.1649371368364; Thu, 07 Apr 2022 15:42:48 -0700 (PDT) Date: Thu, 7 Apr 2022 22:42:40 +0000 Message-Id: <20220407224244.1374102-1-yosryahmed@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.35.1.1178.g4f1659d476-goog Subject: [PATCH v2 0/4] memcg: introduce per-memcg proactive reclaim From: Yosry Ahmed To: Johannes Weiner , Michal Hocko , Shakeel Butt , Andrew Morton , Roman Gushchin Cc: David Rientjes , Tejun Heo , Zefan Li , Jonathan Corbet , Shuah Khan , Yu Zhao , Dave Hansen , Wei Xu , Greg Thelen , Chen Wandun , Vaibhav Jain , Huang@google.com, Ying , "=?UTF-8?q?Michal=20Koutn=C3=BD?=" , Tim Chen , cgroups@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, Yosry Ahmed Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-9.5 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RDNS_NONE,SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE, USER_IN_DEF_DKIM_WL autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch series adds a memory.reclaim proactive reclaim interface. The rationale behind the interface and how it works are in the first patch. --- Changes in V2: - Add the interface to root as well. - Added a selftest. - Documented the interface as a nested-keyed interface, which makes adding optional arguments in the future easier (see doc updates in the first patch). - Modified the commit message to reflect changes and add a timeout argument as a suggested possible extension - Return -EAGAIN if the kernel fails to reclaim the full requested amount. --- Shakeel Butt (1): memcg: introduce per-memcg reclaim interface Yosry Ahmed (3): selftests: cgroup: return the errno of write() in cg_write() on failure selftests: cgroup: fix alloc_anon_noexit() instantly freeing memory selftests: cgroup: add a selftest for memory.reclaim Documentation/admin-guide/cgroup-v2.rst | 21 +++++ mm/memcontrol.c | 37 ++++++++ tools/testing/selftests/cgroup/cgroup_util.c | 11 ++- .../selftests/cgroup/test_memcontrol.c | 94 ++++++++++++++++++- 4 files changed, 156 insertions(+), 7 deletions(-) -- 2.35.1.1178.g4f1659d476-goog