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 57807C4360C for ; Thu, 26 Sep 2019 15:42:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 29DA221D56 for ; Thu, 26 Sep 2019 15:42:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=cloud.ionos.com header.i=@cloud.ionos.com header.b="a/hAnKXS" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726666AbfIZPmu (ORCPT ); Thu, 26 Sep 2019 11:42:50 -0400 Received: from mail-wr1-f68.google.com ([209.85.221.68]:47009 "EHLO mail-wr1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726845AbfIZPmu (ORCPT ); Thu, 26 Sep 2019 11:42:50 -0400 Received: by mail-wr1-f68.google.com with SMTP id o18so3005907wrv.13 for ; Thu, 26 Sep 2019 08:42:49 -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=PpwR5OQB+xY3WIuqEisZKwNt0UQoj8JXmNFXuSMJCwE=; b=a/hAnKXS+9HDKuYBXiN1sVD4g4PquoPFi8ebytrUwHR8OJMwuZRMeQI25EdVSSFe9A SVGe2DOCg6OXIcYs7fPjBuk60lwOWeOZHIUYqG4uM8uaT9hk3rVcVRvO9sZMTzIo+KGk F1wYVu+9TREFKB2WOafva31ThLdwFRYDWrmB1AhO4N8hkM9B1Daog+LCHkWGP5O3SPhV qjEsmAcDfMp/PogyNldplHRPHRCWsvA11I6VZO0tNq6ys7mnoclHtLhE4dr3GK2Sa8mH Eb1qGxOs4wBUuEohF5lkro8Ja5JF+qIoMiSiz+QcH/xzqYVh0FIjXADByAH7yj36HisR uUWw== 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=PpwR5OQB+xY3WIuqEisZKwNt0UQoj8JXmNFXuSMJCwE=; b=KMMxIieoMSKUNAR+mkOHWy/nw4wb9b4OyppFi9arYtNxWAbMbtDuAKPm7ny+TS5hrW G9IhHCU9cGHyiPLrqGRnqAEZ0tvL2aMliJ7vWml+1bj3bHSk1QLYmNmaaiobqYRmnNV1 FYadKndN5qWEMtJeL0kUJvsurGrBwpwkbCmfUyjHDwZNjbSBJBHacMNOhc8043L8BHox hsh4H/chW3gfIMecHTMPgv/oelau7GXOdzk95BWqnw1I56aoM9sSllKFcQJIR5muzpS6 U5Ti79dmxqOUuoIUdQskoYuyMwdgZPoXmcsiXHl5bPbopTPPGuOyeWK6rKisj0XwJULt U4jg== X-Gm-Message-State: APjAAAV+teTFhX2bieNXRxwyUpQ1Z8iQYXkkPlLExoLft0kbVK0hdvE/ 1rQCqjS4LlI0vnK9sLRZo3XeV2iqzTI+WLcQbO7xUQ== X-Google-Smtp-Source: APXvYqy0nPzyGNaJknLG1OMjqhZXNCiRKAKzkH96nghdpSnxJUn80IzRIGN4BTWgrBrAo7mL/czNLCFCX7zGEqpW0FM= X-Received: by 2002:a5d:6785:: with SMTP id v5mr3833859wru.9.1569512568417; Thu, 26 Sep 2019 08:42:48 -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: From: Jinpu Wang Date: Thu, 26 Sep 2019 17:42:37 +0200 Message-ID: Subject: Re: [PATCH v4 21/25] ibnbd: server: functionality for IO submission to file or block dev To: Danil Kipnis Cc: Bart Van Assche , 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-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Thu, Sep 26, 2019 at 5:38 PM Danil Kipnis wrote: > > > > 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? Yes, we should drop it in next round.