From patchwork Thu Apr 7 22:42:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yosry Ahmed X-Patchwork-Id: 559057 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5AB25C433EF for ; Thu, 7 Apr 2022 22:42:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232256AbiDGWow (ORCPT ); Thu, 7 Apr 2022 18:44:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35724 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232240AbiDGWov (ORCPT ); Thu, 7 Apr 2022 18:44:51 -0400 Received: from mail-pg1-x549.google.com (mail-pg1-x549.google.com [IPv6:2607:f8b0:4864:20::549]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E284C152831 for ; Thu, 7 Apr 2022 15:42:48 -0700 (PDT) Received: by mail-pg1-x549.google.com with SMTP id c32-20020a631c60000000b0039cec64e9f1so685991pgm.3 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=bI73I3WsEu/TRVWdgjLm8+HXg5nf2sse7uETIkMNavQ37eo8dcG65c0uZ7kxyCP2Vo YZ0OhgyGtOsgoJYbRa+lAmmfvR9skqceeN8ZcX1nMUn6sM0WBoEv76M6Tm6wzKuYi+8o V8bpQIJUav5pZT9WM73ZqHMwm3E0TNkEknmo0kFqCMTA7ffF4rmWcy9P0fEvbH4C4dW4 9Z4r9zNxQug66eHzEN8+yJPmQFskJwTF8wBZmKZYQSxQVfoGVCvYJCdue24jCozcaR+d P583vwb9Zhc4EwL/tWTWas5H7DRsfAhkpJy6tIWbSYR0g1WUhTv5EPXJVpumjkYaATfg 0OUQ== X-Gm-Message-State: AOAM530S4DzN08XvuuUzkJm3Vmmb9+uI/Y7lsmMVlACQKdKJfy4ydrm5 QwHZtv/4sccEd2l9Vq0+2jTF7u5qjHnmXC7u X-Google-Smtp-Source: ABdhPJwlNJ+NsHyswmzk8S8aUJPENy0C4JQyTzYFWx7UJ9STkknW1VVVp9zPNMHpVNXpn76wXS46DNMY8mlzVMZv 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_Koutn=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 Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@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(-)