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[2620:137:e000::1:20]) by mx.google.com with ESMTP id j68-20020a636e47000000b00542da138a68si2612572pgc.226.2023.06.09.05.11.13; Fri, 09 Jun 2023 05:11:29 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@bytedance.com header.s=google header.b=PRc3ZLG9; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=bytedance.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239859AbjFIMFQ (ORCPT + 99 others); Fri, 9 Jun 2023 08:05:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51970 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240217AbjFIME6 (ORCPT ); Fri, 9 Jun 2023 08:04:58 -0400 Received: from mail-pf1-x42c.google.com (mail-pf1-x42c.google.com [IPv6:2607:f8b0:4864:20::42c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3F5D730FB for ; Fri, 9 Jun 2023 05:04:32 -0700 (PDT) Received: by mail-pf1-x42c.google.com with SMTP id d2e1a72fcca58-662f0feafb2so1317702b3a.1 for ; Fri, 09 Jun 2023 05:04:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1686312272; x=1688904272; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=lp6OV13Bt/hNYfWu+dUWpmpBFuOi+D6XcFIiA8tjOKg=; b=PRc3ZLG9xumYTe3iNTpYxXmSIfnSJd3hDh7S5Kbt9/Im5mvIeUsyviNVibu6klxK4i A2qhQgXsIsD4vx5O6T/e9xkVtT6XySDs3rp6HVIU+P2iyuE/6ugFVGT+GJQTll5OkUnD nrc65hI+bajJDfpIq0Yfm8XovTN0AiqZnU7deGI0gtJ8C8lqDPzdxBx47MVXwRmtj1OF T3g2sr5SU8kShraGEVEpWfve2NHe5Q/eje488uWjHo2du6l4xBVDNYChX2pON9axAJd8 i96aK6DqlBqd7CvDHL8aMoabvlhd5FYQDMh6jDiaTfH9EPUe9ZzmC0CXSqgV1hYezvPc JXQg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686312272; x=1688904272; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=lp6OV13Bt/hNYfWu+dUWpmpBFuOi+D6XcFIiA8tjOKg=; b=ZVbHZkMA5pOovsXD6M1BEGS6d23iK+bQWXJzrVeFFrzQZvCtkRXJCf1j5WzBKZ0nq1 9gKxvptu0JDo+YnZRPjSOc7Wq+ucjLJhUcYlYQZv3AXYfBvy965yilpGfAgqCZ4q15Bd P3q9zFj/040JN1jyyhXFXR8AtRpNvUhk/EtRWbq7AyaMnq7PCSGrlwfo4bC/mRT5O3bc qOLmWTO7HljwUEjvC43c2YkHjDVArz8jBKEa+JTQQU8YOlEG/cHM/i9I59wsiUN50w4T pm0BlbaKJ/1m0YtNMOvC7RgRbSY2lpd2nrJf6BT6lTGp+Hj+GMD3WcB+2GPxg9Vzol/q OCrw== X-Gm-Message-State: AC+VfDxUKPA7351v3Zo9hXZsyXwHZblhlWJ9IWN5F2c4Naf7tVeuhAm3 6X7mdcwhSQPhTHarxo+o2JmnSQ== X-Received: by 2002:a05:6a20:3947:b0:10c:2c30:4765 with SMTP id r7-20020a056a20394700b0010c2c304765mr2091168pzg.1.1686312271708; Fri, 09 Jun 2023 05:04:31 -0700 (PDT) Received: from localhost.localdomain ([139.177.225.249]) by smtp.gmail.com with ESMTPSA id v12-20020a65568c000000b00514256c05c2sm2619168pgs.7.2023.06.09.05.04.29 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Fri, 09 Jun 2023 05:04:31 -0700 (PDT) From: Peng Zhang To: Liam.Howlett@oracle.com Cc: akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, maple-tree@lists.infradead.org, Peng Zhang Subject: [PATCH v2 0/3] Optimize the fast path of mas_store() Date: Fri, 9 Jun 2023 20:03:44 +0800 Message-Id: <20230609120347.63936-1-zhangpeng.00@bytedance.com> X-Mailer: git-send-email 2.37.0 (Apple Git-136) MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=ham 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 X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1768227014105018567?= X-GMAIL-MSGID: =?utf-8?q?1768227014105018567?= Add fast paths for mas_wr_append() and mas_wr_slot_store() respectively. The newly added fast path of mas_wr_append() is used in fork() and how much it benefits fork() depends on how many VMAs are duplicated. Changes since v1: - Revise comment and commit log. [3/3] - Add test for mas_wr_modify() fast path. [1/3] v1: https://lore.kernel.org/lkml/20230602075353.5917-1-zhangpeng.00@bytedance.com/ Peng Zhang (3): maple_tree: add test for mas_wr_modify() fast path maple_tree: optimize mas_wr_append(), also improve duplicating VMAs maple_tree: add a fast path case in mas_wr_slot_store() lib/maple_tree.c | 69 ++++++++++++++++++++++++++++--------------- lib/test_maple_tree.c | 65 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 111 insertions(+), 23 deletions(-)