Received: by 2002:a05:6358:a55:b0:ec:fcf4:3ecf with SMTP id 21csp4082554rwb;
        Sat, 21 Jan 2023 05:38:31 -0800 (PST)
X-Google-Smtp-Source: AMrXdXvZCctAYZ37myh9/AFKeYqyVaU0lKdXbymUib4+ZjAknjBWB34h2iiLbkGp3XjcdDQVg57r
X-Received: by 2002:a17:906:8154:b0:866:d17a:e50 with SMTP id z20-20020a170906815400b00866d17a0e50mr18517386ejw.70.1674308311502;
        Sat, 21 Jan 2023 05:38:31 -0800 (PST)
ARC-Seal: i=1; a=rsa-sha256; t=1674308311; cv=none;
        d=google.com; s=arc-20160816;
        b=KtC07a6zIfyDkD8el6vUlrlwkHYAg7wcVUElUwM3QZM2Rqqx14Lg+j1nqYFiVJM6ie
         2icTj92N9nkv2mgjAb1Y4JPfPmhFVZzxdMnpPtMgaLagfCiYZWLQ7bIGViNAbumal58G
         aKORJHteIqOUj+pv3H1H3Ac+vcIrcwk8lT4leWDeYq5ALkYJRk6EToK2hZ1pvpJGX90o
         PqxiVNNGYc0GFAlLypM77WLyVjDQ3tciEQ2Q4CVt3JAfFehHquC9AloUtLonVJhkV7Y2
         cHIYU9yFrs09fiYD0zNUWMgjbfb4W5s/CZ3jC2og1NAgaHarvl4h8HU/CJ4ulF5xDrza
         Q7/g==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
        h=list-id:precedence:in-reply-to:content-disposition:mime-version
         :references:message-id:subject:cc:to:from:date:dkim-signature;
        bh=YlB0kyjevk0alEzZ7VHdw8fRbblsbas/G7ZnWLhfR0I=;
        b=IifltWKH5nQ3UD75u9MNdVrcn0iNe6GaaQ+f+fv4KkQfEfN59NvRHSKkXtiwax0MUI
         4j0/VVfxdbtMfXlCwhCb/FgCxTaioGay534h3oraUbCH/oaZXDVEDWKr3QolMS8gwvFV
         GJLB1YYZF/ZyJYcPzyKiheXY4IkwwP5ouzSireLz+W9MufrTSB6R6CJOz5edQCHOx/d1
         Auq9P5HiH0LLQu0kmTIK4mtVA4sOEnqIoopT8stbPy9YhJI5dwMlGEZ2GeznZPdZR8aY
         Az+QpaQ1Ab48oz2Wj3Uz0cxlXkU+C0TaNAKoqRXgQCp4qFe7cOw0iDmLOrJL1HNd42iV
         1ZKw==
ARC-Authentication-Results: i=1; mx.google.com;
       dkim=pass header.i=@infradead.org header.s=bombadil.20210309 header.b=vbo3G0Cb;
       spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20])
        by mx.google.com with ESMTP id wu1-20020a170906eec100b0081a9c3ca498si49673790ejb.314.2023.01.21.05.38.17;
        Sat, 21 Jan 2023 05:38:31 -0800 (PST)
Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Authentication-Results: mx.google.com;
       dkim=pass header.i=@infradead.org header.s=bombadil.20210309 header.b=vbo3G0Cb;
       spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S229669AbjAUNBb (ORCPT <rfc822;acleo0523@gmail.com> + 50 others);
        Sat, 21 Jan 2023 08:01:31 -0500
Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38654 "EHLO
        lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S229484AbjAUNBa (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Sat, 21 Jan 2023 08:01:30 -0500
Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133])
        by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CEEC623132;
        Sat, 21 Jan 2023 05:01:28 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
        d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version
        :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To:
        Content-Transfer-Encoding:Content-ID:Content-Description;
        bh=YlB0kyjevk0alEzZ7VHdw8fRbblsbas/G7ZnWLhfR0I=; b=vbo3G0CbyJKakxu3dY8cMdcaYu
        2wqlYcaRc5vQnwt+WljyEznrzEtm+WA8fUrgqXcA3AiuWlnjj82mgXvIoRfEbX0FCydnBAFiN+BBf
        MVtVm3YVRYrrkr5X+E2q5G941cqCYtiIxFxRNWLttfaKbJB1oxTBXwAipzcVl4hUXK77ECp4R2vKI
        xxgDFUrrr+XKzWXazL/5jhBoqUBJAvCQ9QBSeKLmyeIWVjUUHNXaQRk4C3NL7X0rmzRpqmrd0BMrA
        ffD5uBT6vNGOtAKrkQA9EmCGAT6F0OxxtEJUdX6yultP/+dwX9doPqr62L/16Dk/lvTFz+Z3iZL/X
        oQiYVZ1w==;
Received: from hch by bombadil.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux))
        id 1pJDUg-00Ds6m-16; Sat, 21 Jan 2023 13:01:14 +0000
Date:   Sat, 21 Jan 2023 05:01:14 -0800
From:   Christoph Hellwig <hch@infradead.org>
To:     David Howells <dhowells@redhat.com>
Cc:     Al Viro <viro@zeniv.linux.org.uk>,
        Christoph Hellwig <hch@infradead.org>,
        Matthew Wilcox <willy@infradead.org>,
        Jens Axboe <axboe@kernel.dk>, Jan Kara <jack@suse.cz>,
        Jeff Layton <jlayton@kernel.org>,
        Logan Gunthorpe <logang@deltatee.com>,
        linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH v7 1/8] iov_iter: Define flags to qualify page extraction.
Message-ID: <Y8viGuz5//4AP7tZ@infradead.org>
References: <20230120175556.3556978-1-dhowells@redhat.com>
 <20230120175556.3556978-2-dhowells@redhat.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20230120175556.3556978-2-dhowells@redhat.com>
X-SRS-Rewrite: SMTP reverse-path rewritten from <hch@infradead.org> by bombadil.infradead.org. See http://www.infradead.org/rpr.html
X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED,
        DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,
        SPF_NONE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6
X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on
        lindbergh.monkeyblade.net
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Fri, Jan 20, 2023 at 05:55:49PM +0000, David Howells wrote:
> For now only a flag to allow peer-to-peer DMA is allowed; but in future,
> additional flags will be provided to indicate the I/O direction.

Al still doesn't seem to be sold on the latter part, so maybe just
drop this sentence for now.