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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4FCF3C77B60 for ; Mon, 3 Apr 2023 09:22:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231911AbjDCJWR (ORCPT ); Mon, 3 Apr 2023 05:22:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48008 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231984AbjDCJWK (ORCPT ); Mon, 3 Apr 2023 05:22:10 -0400 Received: from mail-wm1-x333.google.com (mail-wm1-x333.google.com [IPv6:2a00:1450:4864:20::333]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E987BE3A0 for ; Mon, 3 Apr 2023 02:21:44 -0700 (PDT) Received: by mail-wm1-x333.google.com with SMTP id i5-20020a05600c354500b003edd24054e0so19349809wmq.4 for ; Mon, 03 Apr 2023 02:21:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; t=1680513701; h=content-transfer-encoding:subject:from:to:content-language :user-agent:mime-version:date:message-id:from:to:cc:subject:date :message-id:reply-to; bh=3UnQuvwF/ZhX13io7inQEeewhfhVgW08UzcPve6QHtQ=; b=Vzgr4GWWLdpJJaFC0qzHyQbHh8wW45sk0zIxUaOXaa8uztapv3s61v9/BadBdre+FN sHzv4+NkQDqi0wVNMn3vgo8gBk46rU57fBcqHdwRp8TsR0s3kNXEYHSSawPBt+EKNA2V 2X88G/XT3wHdcvodEjq/06pht3oDnJrAXBpjAunZLAmYFDpSar9wIKGaKzd98cslXqgN P67PaTjZDYnxM5ybo5zyz3TTZO9QE/7+kLv4HDyEJn6TGjTXKKSRjpNo8outREs6z6gC 93/NHrwV/CUpUkF5fU3ehDkAjw7OGRY/1AlsD98aPQwlI3Ph6Qn+KSMEdogImlCRAHb5 76mQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680513701; h=content-transfer-encoding:subject:from:to:content-language :user-agent:mime-version:date:message-id:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=3UnQuvwF/ZhX13io7inQEeewhfhVgW08UzcPve6QHtQ=; b=YewxDpxF5lRuQLCOSGremg/KfBXdByK4PgMBUDOqQOnyZGKgio7zSVoPv5xMB9RSWc u1mdnBJRQKHyRz4Tcp21Pe72lAGCmmrgGDGTJOit0Q3uArvvLsy5bzimUzbA4d3j1onL fUQDsTlX6Lz5VlZZDP/bc6CFHj2koa4NP/KqzbvgRQUDhSqoUkC947iH+ENUlaCYUt89 kFxl2sv9CAbY1PndJKb2uUvkC53+poqgavEFPtZXL9eGKv+pZRo+1in1JWeHTx2BoxUm WJ+eY20xvQYY0NoLd2qv5gIODn64txx8BzZ3Tw85M91Tp27laZG2FTMB6HyqL7gdhRtc awsQ== X-Gm-Message-State: AO0yUKXMMK33pv9/RK0l81onc7EChIryK1jxP1exDbxdt/tNpCewf0/6 tbKuxjwTEy0L1wHeQ7rztqAtFpT0rGY= X-Google-Smtp-Source: AK7set9DvIAnkA8B0JeMLxvfNRTcgsK1S97Cga6TmS3oDgHl0qqmxkjL7y7L/ZKDvg49UbkBHutmGQ== X-Received: by 2002:a05:600c:220e:b0:3ee:a205:848f with SMTP id z14-20020a05600c220e00b003eea205848fmr24950314wml.20.1680513700825; Mon, 03 Apr 2023 02:21:40 -0700 (PDT) Received: from ?IPV6:2001:660:3305:123:8aeb:8247:342b:85d5? ([2001:660:3305:123:8aeb:8247:342b:85d5]) by smtp.gmail.com with ESMTPSA id z7-20020a05600c220700b003f04646838esm10304082wml.39.2023.04.03.02.21.40 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 03 Apr 2023 02:21:40 -0700 (PDT) Message-ID: <180269da-a7a3-97be-4e8e-c8b82e33d430@gmail.com> Date: Mon, 3 Apr 2023 11:21:39 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.9.0 Content-Language: en-US, fr To: linux-kernel@vger.kernel.org From: Daniel Diaz Subject: Possible dual license for rbtree ? Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Dear Linux maintainers, This is a question about a possible dual license for the rbtree implementation (lib/rbtree.c). Please apologize if it is not the right place to ask. Thank you for personally CC me in the answers/comments posted to the list in response to this post. Looking for an efficient red-black tree implementation in C, I discovered the wonderful rbtree utility. I really appreciate the clever approach of this « invasive » implementation on the top of which one can build his specific maps. I saw this rbtree implementation is famous and widely mentioned but its usage is limited by its GPL license. Could you consider extending this license by a dual license as allowed by docs.kernel.org/process/license-rules.html which states the some individual files can be provided under a dual license including MIT, BSD, etc. Would then it be possible to release rbtree under a dual license more permissive, e.g. MIT ? Be sure this would be very appreciated by a lot of C programmers ! This comes down to modyfy the SPDX descriptions of lib/rbtree.c and include/rbtree.h, include/rbtree_augmented.h, include/rbtree_types.h as follows:     SPDX-License-Identifier: GPL-2.0-or-later OR MIT Thank you for your attention. Daniel