Re: [PATCH 1/1] io_uring/zctx: separate notification user_data

[Jens Axboe <axboe@kernel.dk>]

On 2/16/26 4:48 AM, Pavel Begunkov wrote:
> People previously asked for the notification CQE to have a different
> user_data value from the main request completion. It's useful to
> separate buffer and request handling logic and avoid separately
> refcounting the request.
> 
> Let the user pass the notification user_data in sqe->addr3. If zero,
> it'll inherit sqe->user_data as before. It doesn't change the rules for
> when the user can expect a notification CQE, and it should still check
> the IORING_CQE_F_MORE flag.

This should use and sqe->ioprio flag to manage it, otherwise you're
excluding 0. Which may not be important in and of itself, but the
flag approach is expected way to do this.

Also, please use io_uring/net: for this in the subject and just
have the title reflect zerocopy send.

-- 
Jens Axboe