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=-2.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 5674DC43331 for ; Fri, 27 Mar 2020 08:00:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1461B2073B for ; Fri, 27 Mar 2020 08:00:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=web.de header.i=@web.de header.b="Ryiw2eq6" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726360AbgC0IAl (ORCPT ); Fri, 27 Mar 2020 04:00:41 -0400 Received: from mout.web.de ([212.227.15.4]:35393 "EHLO mout.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726063AbgC0IAk (ORCPT ); Fri, 27 Mar 2020 04:00:40 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1585296012; bh=qsrIXvyI5XAqFT/bXzhp7BN576w9yn0qWhtkPLd/MFw=; h=X-UI-Sender-Class:Subject:To:Cc:References:From:Date:In-Reply-To; b=Ryiw2eq6p32Xptvn5yWb7YreK0Za1tgDc3HYdL2Ihe9vKkdmymexPsG7HtpCiThzi eV/oKZqPXMHP5Rqouy8bQmuaVGLd2mK8YV6S6wsPYat9dKK4WnYMYmyMB9m0xWN+wD NMwYLMRvkT2w8umMu5PCe+zkwhM+DYMvr05hdyh8= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from [192.168.1.2] ([2.244.164.253]) by smtp.web.de (mrweb003 [213.165.67.108]) with ESMTPSA (Nemesis) id 0LwHmQ-1jJHP819OI-0184q1; Fri, 27 Mar 2020 09:00:12 +0100 Subject: Re: [v2 04/10] mmap locking API: use coccinelle to convert mmap_sem rwsem call sites To: Michel Lespinasse , linux-mm@kvack.org Cc: LKML , Coccinelle , Andrew Morton , Vlastimil Babka , Matthew Wilcox , Liam Howlett , Jerome Glisse , Davidlohr Bueso , David Rientjes , Hugh Dickins , Jason Gunthorpe , Peter Zijlstra , Laurent Dufour , Ying Han References: <20200327021058.221911-1-walken@google.com> <20200327021058.221911-5-walken@google.com> From: Markus Elfring Autocrypt: addr=Markus.Elfring@web.de; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:dcMcueHUQVFFNviLz6d709esPHEAERQJVckeYupwVRHYfZecXUp 1EGDL62O3La6nHt6FcNxgS/FDwRFKOT9DEQ73MYKBjSUn2AD+3Pv2EWlyYsuf055nCyuwd7 +gmH1gakD06lj/3D/WBSXx16LdBICFUI4/7Gqzfn3k24szzMWYsP4iqsZ/xmgALYUyJ58VN CPp/VVGJ2WvyJwKNR/NSQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:ejVoErBuYBY=:9acXfw6axRJDdBeYIHcMi+ ZNXDEGEAEIBMzfuuMt56ox6NlmngAdN5MlFRDXNwb42acqxyKdZ80uKwf3+v/vrJ1bLn5qEE0 fgrNZ9oYYu0qDK/8te0mBLXhdZE7vlP1NWgSWvMT+MztY+vsoqXdvYdw0sZeopppOLgeIBsTO IgH9CFNJ621sB+Gm29AODQcIJSsp6OSftLzihMRpFDDjeENFQsEKDQMAZAzvMj6NsuKS8zitl dAe3oUXMR1yFhy5f6xtcJDgtL6wgU1mgcrCW0JkDx/PjV8NSpt9j7AMKS+8hbj0QHxYLqrihA sJgna/GwQIYgiCyOTnreVbco5SU3oknhal00MZs7xqQmjjjal8xeI5M9WrSt59Kd3t47OFQPD 28mzXuRkk5OWzITpQWh3xfCoeWjwU36wrpslTp8h8Hs+aahXEd36pHPG4dSLGD5gT2LSKeUaT FVftCQ7Bxe/ua3h3cZCSxCBfXQJHFDLTpMk+yGRrhHjvhowHy8XuLIbeLOueb8G6NuyrQmo63 MPlC+hkXhWqVLfnpJSeMRTezHCxQE77yTO2vEEvHsxWShJquk2sj77XSsiG+I659sCw/11GZx LVkdmNoVuzp4uAksulCzwCxIt3EufGh4i730KoFwubfhZXbhih4WT/N1TmmU1EGqOn4xaKEFD FWNtaq4Y0I28hxsLigd0lgUFC9IUkbSMzTVx51K6ZlHq+3sEZ+tmIbZA2YZzscJWzBizrMEK6 JJEoXc4DAYa7pfoBINh+8VqP57e4xKd7A6PnLp2oeyy1xkIbZsmDkJDsLKmMMSJcfQODtVLtL UDEcfP9A30lBPklh3yXiYJd+hlmH/XmIHyTbY460auIcFrb9e8OaFNQ3Lh7o68HoAjpC8Yq65 6s/yb9fvctu7u4Qk/OE3T0/IYiIT0RPwmA94FXOAj6JsivJPn3cNY/QOD/6mRheZF04d5WOEG IN95Ttw2YVd5Z7Qobi+tr06G8Qf5MgXhGsZUNLiEyYplvtC9Jt2eOkXTH0wqozqGIdf+xKctP pT49WwoEHDMMIuXO1cBBRD51L7tHWVREdqh0/bt2c0G6CIsXOn+ZexV2qaQKyAbvWO/ALHaaZ zFMucRRtncbLfeQuCpU72jWvZUHU3J/COJsMU5zPbOCxjjIC15fvJbUFwV3WOfkU0fgC1NYU7 NeEUYbPbHkDdnBP3NjHyPl7R0BJEgMekqQk6ubJjsJcPQOAQ4pqFM6zW3Zg1e1YYG4rL6FZ85 WgHhDZNf2HySCs6I7 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >>> The change is generated using coccinelle with the following rules: >> >> Would you like to apply only a single SmPL rule here? > > I think this version of the patch is already a single rule, > similar to what you suggested ? Yes. - But you repeated the wording =E2=80=9Crules=E2=80=9D in the change = description. Are there any other software extensions still in the waiting queue? > I'm not sure it matters that much, as long as it produces the correct > end result. The run takes about 25 seconds before any optimizations, > which I find very acceptable. I am used to look also at the run time characteristics of SmPL script execution. The discussed SmPL code can be good enough for your current needs. 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s=dbaedf251592; t=1585296012; bh=qsrIXvyI5XAqFT/bXzhp7BN576w9yn0qWhtkPLd/MFw=; h=X-UI-Sender-Class:Subject:To:Cc:References:From:Date:In-Reply-To; b=Ryiw2eq6p32Xptvn5yWb7YreK0Za1tgDc3HYdL2Ihe9vKkdmymexPsG7HtpCiThzi eV/oKZqPXMHP5Rqouy8bQmuaVGLd2mK8YV6S6wsPYat9dKK4WnYMYmyMB9m0xWN+wD NMwYLMRvkT2w8umMu5PCe+zkwhM+DYMvr05hdyh8= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from [192.168.1.2] ([2.244.164.253]) by smtp.web.de (mrweb003 [213.165.67.108]) with ESMTPSA (Nemesis) id 0LwHmQ-1jJHP819OI-0184q1; Fri, 27 Mar 2020 09:00:12 +0100 To: Michel Lespinasse , linux-mm@kvack.org References: <20200327021058.221911-1-walken@google.com> <20200327021058.221911-5-walken@google.com> From: Markus Elfring Autocrypt: addr=Markus.Elfring@web.de; prefer-encrypt=mutual; keydata= mQINBFg2+xABEADBJW2hoUoFXVFWTeKbqqif8VjszdMkriilx90WB5c0ddWQX14h6w5bT/A8 +v43YoGpDNyhgA0w9CEhuwfZrE91GocMtjLO67TAc2i2nxMc/FJRDI0OemO4VJ9RwID6ltwt mpVJgXGKkNJ1ey+QOXouzlErVvE2fRh+KXXN1Q7fSmTJlAW9XJYHS3BDHb0uRpymRSX3O+E2 lA87C7R8qAigPDZi6Z7UmwIA83ZMKXQ5stA0lhPyYgQcM7fh7V4ZYhnR0I5/qkUoxKpqaYLp YHBczVP+Zx/zHOM0KQphOMbU7X3c1pmMruoe6ti9uZzqZSLsF+NKXFEPBS665tQr66HJvZvY GMDlntZFAZ6xQvCC1r3MGoxEC1tuEa24vPCC9RZ9wk2sY5Csbva0WwYv3WKRZZBv8eIhGMxs rcpeGShRFyZ/0BYO53wZAPV1pEhGLLxd8eLN/nEWjJE0ejakPC1H/mt5F+yQBJAzz9JzbToU 5jKLu0SugNI18MspJut8AiA1M44CIWrNHXvWsQ+nnBKHDHHYZu7MoXlOmB32ndsfPthR3GSv jN7YD4Ad724H8fhRijmC1+RpuSce7w2JLj5cYj4MlccmNb8YUxsE8brY2WkXQYS8Ivse39MX BE66MQN0r5DQ6oqgoJ4gHIVBUv/ZwgcmUNS5gQkNCFA0dWXznQARAQABtCZNYXJrdXMgRWxm cmluZyA8TWFya3VzLkVsZnJpbmdAd2ViLmRlPokCVAQTAQgAPhYhBHDP0hzibeXjwQ/ITuU9 Figxg9azBQJYNvsQAhsjBQkJZgGABQsJCAcCBhUICQoLAgQWAgMBAh4BAheAAAoJEOU9Figx g9azcyMP/iVihZkZ4VyH3/wlV3nRiXvSreqg+pGPI3c8J6DjP9zvz7QHN35zWM++1yNek7Ar OVXwuKBo18ASlYzZPTFJZwQQdkZSV+atwIzG3US50ZZ4p7VyUuDuQQVVqFlaf6qZOkwHSnk+ CeGxlDz1POSHY17VbJG2CzPuqMfgBtqIU1dODFLpFq4oIAwEOG6fxRa59qbsTLXxyw+PzRaR LIjVOit28raM83Efk07JKow8URb4u1n7k9RGAcnsM5/WMLRbDYjWTx0lJ2WO9zYwPgRykhn2 sOyJVXk9xVESGTwEPbTtfHM+4x0n0gC6GzfTMvwvZ9G6xoM0S4/+lgbaaa9t5tT/PrsvJiob kfqDrPbmSwr2G5mHnSM9M7B+w8odjmQFOwAjfcxoVIHxC4Cl/GAAKsX3KNKTspCHR0Yag78w i8duH/eEd4tB8twcqCi3aCgWoIrhjNS0myusmuA89kAWFFW5z26qNCOefovCx8drdMXQfMYv g5lRk821ZCNBosfRUvcMXoY6lTwHLIDrEfkJQtjxfdTlWQdwr0mM5ye7vd83AManSQwutgpI q+wE8CNY2VN9xAlE7OhcmWXlnAw3MJLW863SXdGlnkA3N+U4BoKQSIToGuXARQ14IMNvfeKX NphLPpUUnUNdfxAHu/S3tPTc/E/oePbHo794dnEm57LuuQINBFg2+xABEADZg/T+4o5qj4cw nd0G5pFy7ACxk28mSrLuva9tyzqPgRZ2bdPiwNXJUvBg1es2u81urekeUvGvnERB/TKekp25 4wU3I2lEhIXj5NVdLc6eU5czZQs4YEZbu1U5iqhhZmKhlLrhLlZv2whLOXRlLwi4jAzXIZAu 76mT813jbczl2dwxFxcT8XRzk9+dwzNTdOg75683uinMgskiiul+dzd6sumdOhRZR7YBT+xC wzfykOgBKnzfFscMwKR0iuHNB+VdEnZw80XGZi4N1ku81DHxmo2HG3icg7CwO1ih2jx8ik0r riIyMhJrTXgR1hF6kQnX7p2mXe6K0s8tQFK0ZZmYpZuGYYsV05OvU8yqrRVL/GYvy4Xgplm3 DuMuC7/A9/BfmxZVEPAS1gW6QQ8vSO4zf60zREKoSNYeiv+tURM2KOEj8tCMZN3k3sNASfoG fMvTvOjT0yzMbJsI1jwLwy5uA2JVdSLoWzBD8awZ2X/eCU9YDZeGuWmxzIHvkuMj8FfX8cK/ 2m437UA877eqmcgiEy/3B7XeHUipOL83gjfq4ETzVmxVswkVvZvR6j2blQVr+MhCZPq83Ota xNB7QptPxJuNRZ49gtT6uQkyGI+2daXqkj/Mot5tKxNKtM1Vbr/3b+AEMA7qLz7QjhgGJcie qp4b0gELjY1Oe9dBAXMiDwARAQABiQI8BBgBCAAmFiEEcM/SHOJt5ePBD8hO5T0WKDGD1rMF Alg2+xACGwwFCQlmAYAACgkQ5T0WKDGD1rOYSw/+P6fYSZjTJDAl9XNfXRjRRyJSfaw6N1pA Ahuu0MIa3djFRuFCrAHUaaFZf5V2iW5xhGnrhDwE1Ksf7tlstSne/G0a+Ef7vhUyeTn6U/0m +/BrsCsBUXhqeNuraGUtaleatQijXfuemUwgB+mE3B0SobE601XLo6MYIhPh8MG32MKO5kOY hB5jzyor7WoN3ETVNQoGgMzPVWIRElwpcXr+yGoTLAOpG7nkAUBBj9n9TPpSdt/npfok9ZfL /Q+ranrxb2Cy4tvOPxeVfR58XveX85ICrW9VHPVq9sJf/a24bMm6+qEg1V/G7u/AM3fM8U2m tdrTqOrfxklZ7beppGKzC1/WLrcr072vrdiN0icyOHQlfWmaPv0pUnW3AwtiMYngT96BevfA qlwaymjPTvH+cTXScnbydfOQW8220JQwykUe+sHRZfAF5TS2YCkQvsyf7vIpSqo/ttDk4+xc Z/wsLiWTgKlih2QYULvW61XU+mWsK8+ZlYUrRMpkauN4CJ5yTpvp+Orcz5KixHQmc5tbkLWf x0n1QFc1xxJhbzN+r9djSGGN/5IBDfUqSANC8cWzHpWaHmSuU3JSAMB/N+yQjIad2ztTckZY pwT6oxng29LzZspTYUEzMz3wK2jQHw+U66qBFk8whA7B2uAU1QdGyPgahLYSOa4XAEGb6wbI FEE= Message-ID: Date: Fri, 27 Mar 2020 09:00:10 +0100 User-Agent: Mozilla/5.0 (X11; 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