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=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 6A5DEC73C46 for ; Tue, 9 Jul 2019 15:39:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 475FC214AF for ; Tue, 9 Jul 2019 15:39:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726133AbfGIPjI convert rfc822-to-8bit (ORCPT ); Tue, 9 Jul 2019 11:39:08 -0400 Received: from mail-pf1-f196.google.com ([209.85.210.196]:33734 "EHLO mail-pf1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726060AbfGIPjI (ORCPT ); Tue, 9 Jul 2019 11:39:08 -0400 Received: by mail-pf1-f196.google.com with SMTP id g2so4695474pfq.0; Tue, 09 Jul 2019 08:39:08 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=Vhv+QzLlEpVv7HK4hE6vt/AhsNBtiAPjkQj7ht//l1E=; b=oowxynKi3iz0kJck73l/N7/XoZO2T/JTuG4wOujXQjNA1tLKAgyMV41BRjyChMmZ/8 haQrL31h896dBszH/+Qeu/0wl51XGeN8ydY7sCkLEsA8rsSVzV61leyrDJBcJ33QrIa2 GTNgzGCAKc8Lnjm/VdUw0tyQxE8ObUoJ+7jSH+3NuoHcI28d9A9YdbiJLJ1WOceIm1mb EuYgBs8e82je8awxUe9PIkJlzgppycxDUqij6HV9cBCHPQxriPr38yk8oHpoofg8T1Z5 9wtPU067F9EzkmXCka99/f7r7HQVi3lx5TRZ5hjSCCWBZMQHMRVE/8CeyS4HBF2XsMBX vW4Q== X-Gm-Message-State: APjAAAVdQ9bxkA+/oy/IjEx5YQAA4KHdHPE8u/1SSfuYo18MD0jdernq pE9hsbSUdMdM51CSvL/uVr4= X-Google-Smtp-Source: APXvYqxMR7+jf2ZFl2+F56L8/KBnAO4b1VibdZP7NSJnCfanld2bX/P5rfxgysndHg7gEYvOe5w6Cw== X-Received: by 2002:a17:90a:d3d4:: with SMTP id d20mr853370pjw.28.1562686747859; Tue, 09 Jul 2019 08:39:07 -0700 (PDT) Received: from [10.254.204.66] (50-242-106-94-static.hfc.comcastbusiness.net. [50.242.106.94]) by smtp.gmail.com with ESMTPSA id j15sm22232513pfr.146.2019.07.09.08.39.05 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 09 Jul 2019 08:39:06 -0700 (PDT) Subject: Re: [PATCH v4 00/25] InfiniBand Transport (IBTRS) and Network Block Device (IBNBD) To: Greg KH , Leon Romanovsky Cc: Danil Kipnis , Jack Wang , linux-block@vger.kernel.org, linux-rdma@vger.kernel.org, axboe@kernel.dk, Christoph Hellwig , Sagi Grimberg , jgg@mellanox.com, dledford@redhat.com, Roman Pen References: <20190620150337.7847-1-jinpuwang@gmail.com> <20190709110036.GQ7034@mtr-leonro.mtl.com> <20190709111737.GB6719@kroah.com> From: Bart Van Assche Message-ID: <4d1b1e56-dc66-a07d-8697-5b51c4c8f5c7@acm.org> Date: Tue, 9 Jul 2019 08:39:04 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.1 MIME-Version: 1.0 In-Reply-To: <20190709111737.GB6719@kroah.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8BIT Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On 7/9/19 4:17 AM, Greg KH wrote: > So if these developers are willing to do the work to get something out > of staging, and into the "real" part of the kernel, I will gladly take > it. Linus once famously said "given enough eyeballs, all bugs are shallow". There are already two block-over-RDMA driver pairs upstream (NVMeOF and SRP). Accepting the IBTRS and IBNBD drivers upstream would reduce the number of users of the upstream block-over-RDMA drivers and hence would fragment the block-over-RDMA driver user base further. Additionally, I'm not yet convinced that the interesting parts of IBNBD cannot be integrated into the existing upstream drivers. So it's not clear to me whether taking the IBTRS and IBNBD drivers upstream would help the Linux user community. Bart.