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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 20B38C4360C for ; Thu, 26 Sep 2019 15:38:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EBED521D56 for ; Thu, 26 Sep 2019 15:38:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=cloud.ionos.com header.i=@cloud.ionos.com header.b="Vx2Q2UPg" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726666AbfIZPi0 (ORCPT ); Thu, 26 Sep 2019 11:38:26 -0400 Received: from mail-io1-f68.google.com ([209.85.166.68]:33657 "EHLO mail-io1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726105AbfIZPi0 (ORCPT ); Thu, 26 Sep 2019 11:38:26 -0400 Received: by mail-io1-f68.google.com with SMTP id z19so7815151ior.0 for ; Thu, 26 Sep 2019 08:38:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cloud.ionos.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=Rh5tIrifhCGwEblEk0uaUyXDhhvPj9j5rW2V2gwVGcU=; b=Vx2Q2UPgYEUF8Xmkx/9xhohOpE68qdaWbVcHX5UDNohEKa9qV/UagHZar2QRyYaxv5 cQ2Tan6V7e1oZVkIvtuwao3YX/9M4KR+NvjbunDEycr3rq8sECiLESEL9yw3y7ysvdBx Utf66xm2wwRHmcKiEoozzcemO9ROevzJeoab7iZRKluzv+8RfoDTPdAmsno6KL7mW0II ObVi9yeBbc3dXcQxfCoS3b7DrmNgg4FXi0is9Jh/TFKNIC/AkZ7mtU6nDj0h1d8FpyFW F+hRaAPPCCO+NQCj1sYl6ENT+cYyDuYBN6hNiUasFnzSjF3w3S8nYr/WJpqkdvrpbRe7 gQQQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Rh5tIrifhCGwEblEk0uaUyXDhhvPj9j5rW2V2gwVGcU=; b=Qa9Ih653kDhELBbNBKX223hDolB3pHwy1XcMGVvWs+RxxkvKEeDalyVLAb7kEQabLp rfk+YlL37VaW6wpqGbX0UvzzYTu5T9xtK07A5oQcYnYx5LHgw6soeKORAAI7OjLtWRxC C5Iin8tlLno2xkp5a88EZYi3mpAlTzdOenPZqomgud/WnfZ6BSi3eGGifLEehmyYHzmZ ob6appxDWGzEBQI1rn40T553swjUjxvGIGD40l7sMahr3XzW6KyVcr4x1O10ZDng91Xo sWfFB5f9LLjdLkDjHzPIMTGR0EY0vo9Q8j65sO97+y+UzFfIVjfHHmSNHk3MWgd9N46e q0PA== X-Gm-Message-State: APjAAAVrAT6KtNt4IUlh67js1eQldaqF7cP0E3/+NowSS0xtS8NyVCK3 JhZ+XqXZcxY7fz2JssBfc+CcHSdpES775cRtkJY2cnj9Mw== X-Google-Smtp-Source: APXvYqxVAcTskR1MOwPRDd2AEz8PUi5T5ga+pwMPnis+3DCwSXqmMNV4Ui9T+PF8wy6NWAyUda+SOJWPK/eX/su4NvA= X-Received: by 2002:a6b:c348:: with SMTP id t69mr3871001iof.66.1569512304072; Thu, 26 Sep 2019 08:38:24 -0700 (PDT) MIME-Version: 1.0 References: <20190620150337.7847-1-jinpuwang@gmail.com> <20190620150337.7847-22-jinpuwang@gmail.com> <40f69402-5f38-c78b-8922-3a77babb4c6c@acm.org> In-Reply-To: <40f69402-5f38-c78b-8922-3a77babb4c6c@acm.org> From: Danil Kipnis Date: Thu, 26 Sep 2019 17:38:13 +0200 Message-ID: Subject: Re: [PATCH v4 21/25] ibnbd: server: functionality for IO submission to file or block dev To: Bart Van Assche Cc: Jinpu Wang , Jack Wang , linux-block@vger.kernel.org, linux-rdma@vger.kernel.org, Jens Axboe , Christoph Hellwig , Sagi Grimberg , Jason Gunthorpe , Doug Ledford , rpenyaev@suse.de Content-Type: text/plain; charset="UTF-8" Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org > > Bart, would it in your opinion be OK to drop the file_io support in > > IBNBD entirely? We implemented this feature in the beginning of the > > project to see whether it could be beneficial in some use cases, but > > never actually found any. > > I think that's reasonable since the loop driver can be used to convert a > file into a block device. Jack, shall we drop it?