From patchwork Wed Dec 9 14:51:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vitaly Wool X-Patchwork-Id: 340710 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=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham 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 A11CBC4167B for ; Wed, 9 Dec 2020 14:53:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6FD92233EA for ; Wed, 9 Dec 2020 14:53:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733205AbgLIOxD (ORCPT ); Wed, 9 Dec 2020 09:53:03 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40038 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732372AbgLIOwz (ORCPT ); Wed, 9 Dec 2020 09:52:55 -0500 Received: from mail-wr1-x441.google.com (mail-wr1-x441.google.com [IPv6:2a00:1450:4864:20::441]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8B6D3C06179C for ; Wed, 9 Dec 2020 06:52:14 -0800 (PST) Received: by mail-wr1-x441.google.com with SMTP id i9so2051747wrc.4 for ; Wed, 09 Dec 2020 06:52:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=konsulko.com; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=8B63CdA/mRT8RO3l7gAf79HFX2FaCdIB/HywCX4XINw=; b=FYMgce+eZibf5yzoliI0r7tMr9W4JEwA95+OcIwL/9vZauhXQ+9k8Om2Jlj3OAkkQp N5bK1A3Hw6Up9bdT+ot7lYont8QnneacAbUIvCXcD9ZgcvEkBfvvLd51E7snhHbTYA6W hHwZB7lPkV1VD9eFA+NFHckGmmy/fnoIsQN+Y= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=8B63CdA/mRT8RO3l7gAf79HFX2FaCdIB/HywCX4XINw=; b=K/LPPiULqa7cCV92mn5Z2YgN4KNwda9+GhPRPO3HL5oK95kz0OF4eaVv0jkckYGrQp 0eOakrFr3ZhIHcLnDOxldnvb3Wy9gHbZmgktVqNBANWVZRVu03M8sSWbDNnSxZnH9Dzj k+ovuNVujmG1cAijdWWpduMun4L+7+Ewwtj7qfIbZE8vwG1AQ7+r96/0AtzDBpONGXUR MDoljbV+Ytacl866teiiv7ui9E2IxeqVoghFiW1doPwQyehx2LpRsOSSiLk04ZtMBDuJ 72mGNROe4TY06wVEL9xO7WE3HFY7FhtVGcXN7TGXYTWbVc3XxTan8b4qXC43cOtl9z80 I6tA== X-Gm-Message-State: AOAM531wnowlt+GHPzD1C6PSRptt1E1VdCGuEDaqj3ayaSfQBaEA31ue TgRH7lZczF7BUPwX1Z8m5742/kTlQF7i6f9U X-Google-Smtp-Source: ABdhPJwrS/p3e9ysk2dI08RtwuFRzCtLqaqaSWeKSAOmwoxMMEWcrzGWSCnrZ/Zd2unz3jtUeEBPPg== X-Received: by 2002:a5d:6250:: with SMTP id m16mr3154057wrv.400.1607525533379; Wed, 09 Dec 2020 06:52:13 -0800 (PST) Received: from taos.konsulko.bg (lan.nucleusys.com. [92.247.61.126]) by smtp.gmail.com with ESMTPSA id 189sm3831957wma.22.2020.12.09.06.52.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Dec 2020 06:52:12 -0800 (PST) From: Vitaly Wool To: linux-mm@kvack.org Cc: lkml@vger.kernel.org, linux-rt-users@vger.kernel.org, Sebastian Andrzej Siewior , Mike Galbraith , akpm@linux-foundation.org, Vitaly Wool Subject: [PATCH 0/3] z3fold: stability / rt fixes Date: Wed, 9 Dec 2020 16:51:48 +0200 Message-Id: <20201209145151.18994-1-vitaly.wool@konsulko.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-rt-users@vger.kernel.org This patchset addresses z3fold stability issues under stress load, primarily in the reclaim and free aspects. Besides, it fixes the locking problems that were only seen in real-time kernel configuration. Vitaly Wool (2): z3fold: simplify freeing slots z3fold: stricter locking and more careful reclaim Mike Galbraith (1): z3fold: Remove preempt disabled sections for RT mm/z3fold.c | 191 ++++++++++++++++++++++++++-------------------------- 1 file changed, 96 insertions(+), 95 deletions(-)