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;
Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates
 216.228.117.160 as permitted sender) receiver=protection.outlook.com;
 client-ip=216.228.117.160; helo=mail.nvidia.com; pr=C
Message-ID: <743ad0e5-6936-9287-d093-2ce1c2a3e32d@nvidia.com>
Date:   Mon, 24 Oct 2022 12:15:56 -0700
MIME-Version: 1.0
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101
 Thunderbird/102.4.0
Subject: Re: [PATCH v11 0/9] Userspace P2PDMA with O_DIRECT NVMe devices
Content-Language: en-US
To:     Christoph Hellwig <hch@lst.de>,
        Logan Gunthorpe <logang@deltatee.com>
CC:     <linux-kernel@vger.kernel.org>, <linux-nvme@lists.infradead.org>,
        <linux-block@vger.kernel.org>, <linux-pci@vger.kernel.org>,
        <linux-mm@kvack.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "Dan Williams" <dan.j.williams@intel.com>,
        Jason Gunthorpe <jgg@ziepe.ca>,
        =?UTF-8?Q?Christian_K=c3=b6nig?= <christian.koenig@amd.com>,
        Don Dutile <ddutile@redhat.com>,
        Matthew Wilcox <willy@infradead.org>,
        Daniel Vetter <daniel.vetter@ffwll.ch>,
        Minturn Dave B <dave.b.minturn@intel.com>,
        "Jason Ekstrand" <jason@jlekstrand.net>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Xiong Jianxin <jianxin.xiong@intel.com>,
        Bjorn Helgaas <helgaas@kernel.org>,
        Ira Weiny <ira.weiny@intel.com>,
        Robin Murphy <robin.murphy@arm.com>,
        "Martin Oliveira" <martin.oliveira@eideticom.com>,
        Chaitanya Kulkarni <ckulkarnilinux@gmail.com>,
        Ralph Campbell <rcampbell@nvidia.com>,
        "Stephen Bates" <sbates@raithlin.com>, <viro@zeniv.linux.org.uk>
References: <20221021174116.7200-1-logang@deltatee.com>
 <20221024150320.GA26731@lst.de>
From:   John Hubbard <jhubbard@nvidia.com>
In-Reply-To: <20221024150320.GA26731@lst.de>
Content-Type: text/plain; charset="UTF-8"; format=flowed
Content-Transfer-Encoding: 7bit
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Oct 2022 19:16:08.8953
 (UTC)
X-MS-Exchange-CrossTenant-Network-Message-Id: b2a06d9f-ab78-4ebf-82ef-08dab5f434e6
X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a
X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com]
X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT068.eop-nam11.prod.protection.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Anonymous
X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem
X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB7571
X-Spam-Status: No, score=-1.6 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH,
        DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO,
        NICE_REPLY_A,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,
        SPF_NONE autolearn=no 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 10/24/22 08:03, Christoph Hellwig wrote:
> The series looks good to me know. How do we want to handle it?  I think
> we need a special branch somewhere (maybe in the block or mm trees?)
> so that we can base the other iov_iter work from John on it.  Also
> Al has a whole bunch of iov_iter changes that we probably want on
> the same branch as well, although some of those (READ vs WRITE fixups)
> look like 6.1 material to me.
> 

A little earlier, Jens graciously offered [1] to provide a topic branch,
such as:

     for-6.2/block-gup [2]

(I've moved the name forward from 6.1 to 6.2, because that discussion
was 7 weeks ago.)


[1] https://lore.kernel.org/ae675a01-90e6-4af1-6c43-660b3a6c7b72@kernel.dk
[2] https://lore.kernel.org/55a2d67f-9a12-9fe6-d73b-8c3f5eb36f31@kernel.dk

thanks,
-- 
John Hubbard
NVIDIA