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([2620:10d:c092:600::1:640]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6a050c5cf0bsm661299a12.23.2026.07.29.03.40.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 29 Jul 2026 03:40:57 -0700 (PDT) Message-ID: <7217c204-786f-4fb1-9c09-fc1ac7c8a249@gmail.com> Date: Wed, 29 Jul 2026 11:40:48 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 02/14] iov_iter: add iterator type for dmabuf maps To: Christoph Hellwig Cc: Jens Axboe , Keith Busch , Sagi Grimberg , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org, io-uring@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, Alexander Viro , Christian Brauner , Andrew Morton , Sumit Semwal , =?UTF-8?Q?Christian_K=C3=B6nig?= , Nitesh Shetty , Kanchan Joshi , Anuj Gupta , Tushar Gohad , William Power , Phil Cayton , Jason Gunthorpe , Damien Le Moal , Alasdair Kergon , Mike Snitzer , Mikulas Patocka , Benjamin Marzinski , Vishal Verma , David Sterba , Ilya Dryomov , dm-devel@lists.linux.dev, nvdimm@lists.linux.dev, linux-btrfs@vger.kernel.org, ceph-devel@vger.kernel.org References: <132442812a40277a5904cb2a8ca1e02f4f6e82a2.1785274111.git.asml.silence@gmail.com> <20260729065953.GB9534@lst.de> Content-Language: en-US From: Pavel Begunkov In-Reply-To: <20260729065953.GB9534@lst.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 7/29/26 07:59, Christoph Hellwig wrote: > On Tue, Jul 28, 2026 at 10:29:14PM +0100, Pavel Begunkov wrote: >> Introduce a new iterator type for dmabuf maps. The map in an opaque >> object with internals and format specific to the subsystem / driver, and >> only it can use that subsystem / driver for issuing IO. The task of the >> middle layers is to pass the map / iterator further down, maybe doing >> basic splitting and length checking. The iterator can only be used by >> operations of the file the associated map was created for. >> >> Suggested-by: Keith Busch >> Signed-off-by: Pavel Begunkov > > Looks good: > > Reviewed-by: Christoph Hellwig Thanks, > I'm also pretty sure I reviewed this and vairous other patches > before.. There was a lot of shuffling, so I dropped the tag after a 10th amendment to the patch as I didn't know whether you want to keep it. I'll keep it all for v5 unless anything conceptual changes. -- Pavel Begunkov