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[152.165.125.156]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7f4c5093a56sm3565645b3a.47.2025.12.11.17.06.00 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 11 Dec 2025 17:06:04 -0800 (PST) Message-ID: <6edcb112-dabc-41ff-8e47-8b331de12f5c@gmail.com> Date: Fri, 12 Dec 2025 01:06:09 +0000 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC v2 02/11] iov_iter: introduce iter type for pre-registered dma To: Christoph Hellwig Cc: linux-block@vger.kernel.org, io-uring@vger.kernel.org, Vishal Verma , tushar.gohad@intel.com, Keith Busch , Jens Axboe , Christoph Hellwig , Sagi Grimberg , Alexander Viro , Christian Brauner , Andrew Morton , Sumit Semwal , =?UTF-8?Q?Christian_K=C3=B6nig?= , linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org References: Content-Language: en-US From: Pavel Begunkov In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251211_170606_289891_1A8433CC X-CRM114-Status: GOOD ( 13.15 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On 12/4/25 10:43, Christoph Hellwig wrote: > On Sun, Nov 23, 2025 at 10:51:22PM +0000, Pavel Begunkov wrote: >> diff --git a/include/linux/uio.h b/include/linux/uio.h >> index 5b127043a151..1b22594ca35b 100644 >> --- a/include/linux/uio.h >> +++ b/include/linux/uio.h >> @@ -29,6 +29,7 @@ enum iter_type { >> ITER_FOLIOQ, >> ITER_XARRAY, >> ITER_DISCARD, >> + ITER_DMA_TOKEN, > > Please use DMABUF/dmabuf naming everywhere, this is about dmabufs and > not dma in general. I guess I can do that (in all places) since it got that much fat around dmabuf, but for me it was always about passing dma addresses. Dmabuf was a way to pass buffers, even though mandatory for uapi. -- Pavel Begunkov