linux-kernel - Re: [PATCH 6/7] io_uring: add task fork hook

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Message-ID: <20260127-spangen-wahlkabine-1224340b32f9@brauner>
Date: Tue, 27 Jan 2026 11:07:41 +0100
From: Christian Brauner <brauner@...nel.org>
To: Jens Axboe <axboe@...nel.dk>
Cc: io-uring@...r.kernel.org, jannh@...gle.com, kees@...nel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/7] io_uring: add task fork hook

On Mon, Jan 19, 2026 at 04:54:29PM -0700, Jens Axboe wrote:
> Called when copy_process() is called to copy state to a new child.
> Right now this is just a stub, but will be used shortly to properly
> handle fork'ing of task based io_uring restrictions.
> 
> Signed-off-by: Jens Axboe <axboe@...nel.dk>
> ---

Reviewed-by: Christian Brauner (Microsoft) <brauner@...nel.org>

> diff --git a/include/linux/sched.h b/include/linux/sched.h
> index d395f2810fac..9abbd11bb87c 100644
> --- a/include/linux/sched.h
> +++ b/include/linux/sched.h
> @@ -1190,6 +1190,7 @@ struct task_struct {
>  
>  #ifdef CONFIG_IO_URING
>  	struct io_uring_task		*io_uring;
> +	struct io_restriction		*io_uring_restrict;
>  #endif

Somewhat should make a graph how much struct task_struct grew in the
last 5 years. :D