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Mon, 16 Mar 2026 18:01:55 -0700 (PDT) Received: from [192.168.1.150] ([198.8.77.157]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7d77c961e79sm10284487a34.7.2026.03.16.18.01.54 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 16 Mar 2026 18:01:54 -0700 (PDT) Message-ID: <307e4126-91ed-4ca8-9eb0-3f24f1490aa8@kernel.dk> Date: Mon, 16 Mar 2026 19:01:53 -0600 Precedence: bulk X-Mailing-List: io-uring@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 0/5] io_uring/uring_cmd: allow non-iopoll cmds with IORING_SETUP_IOPOLL From: Jens Axboe To: Christoph Hellwig , Keith Busch , Sagi Grimberg , Caleb Sander Mateos Cc: io-uring@vger.kernel.org, linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, Anuj Gupta , Kanchan Joshi , Ming Lei References: <20260302172914.2488599-1-csander@purestorage.com> <177369928494.700746.8101380068186003544.b4-ty@kernel.dk> Content-Language: en-US In-Reply-To: <177369928494.700746.8101380068186003544.b4-ty@kernel.dk> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 3/16/26 4:14 PM, Jens Axboe wrote: > > On Mon, 02 Mar 2026 10:29:09 -0700, Caleb Sander Mateos wrote: >> Currently, creating an io_uring with IORING_SETUP_IOPOLL requires all >> requests issued to it to support iopoll. This prevents, for example, >> using ublk zero-copy together with IORING_SETUP_IOPOLL, as ublk >> zero-copy buffer registrations are performed using a uring_cmd. There's >> no technical reason why these non-iopoll uring_cmds can't be supported. >> They will either complete synchronously or via an external mechanism >> that calls io_uring_cmd_done(), io_uring_cmd_post_mshot_cqe32(), or >> io_uring_mshot_cmd_post_cqe(), so they don't need to be polled. >> >> [...] > > Applied, thanks! > > [1/5] io_uring: add REQ_F_IOPOLL > commit: 9165dc4fa969b64c2d4396ee4e1546a719978dd1 > [2/5] io_uring: remove iopoll_queue from struct io_issue_def > commit: 7995be40deb3ab8b5df7bdf0621f33aa546aefa7 > [3/5] io_uring: count CQEs in io_iopoll_check() > commit: 3a5e96d47f7ea37fb6adf37882eec1521f8ca75e > [4/5] io_uring/uring_cmd: allow non-iopoll cmds with IORING_SETUP_IOPOLL > commit: 23475637b0c47e5028817c9fd4dabe8f7409ca6c > [5/5] nvme: remove nvme_dev_uring_cmd() IO_URING_F_IOPOLL check > commit: f144dbac4b177cfd026e417ab98da518ff3372cb Caleb, want to send the liburing tests and documentation updates too? -- Jens Axboe