Re: [PATCH v5 0/5] io_uring/uring_cmd: allow non-iopoll cmds with IORING_SETUP_IOPOLL

[Jens Axboe]

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

Best regards,
-- 
Jens Axboe