Re: [PATCH RFC v3 2/4] pidfd: add CLONE_PIDFD_AUTOKILL

[Oleg Nesterov]

On 02/17, Christian Brauner wrote:
>
> @@ -2470,8 +2479,11 @@ __latent_entropy struct task_struct *copy_process(
>  	syscall_tracepoint_update(p);
>  	write_unlock_irq(&tasklist_lock);
>  
> -	if (pidfile)
> +	if (pidfile) {
> +		if (clone_flags & CLONE_PIDFD_AUTOKILL)
> +			p->signal->autokill_pidfd = pidfile;
>  		fd_install(pidfd, pidfile);

Just curious... Instead of adding signal->autokill_pidfd, can't we
add another "not fcntl" PIDFD_AUTOKILL flag that lives in ->f_flags ?

Oleg.