linux-kernel - Re: [PATCH linux-next] signal: Remove outdated __send_signal references in? do_notify

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Message-ID: <20250728095405.GA25567@redhat.com>
Date: Mon, 28 Jul 2025 11:54:05 +0200
From: Oleg Nesterov <oleg@...hat.com>
To: fan.yu9@....com.cn, Andrew Morton <akpm@...ux-foundation.org>
Cc: tglx@...utronix.de, frederic@...nel.org, peterz@...radead.org,
	brauner@...nel.org, iro@...iv.linux.org.uk,
	joel.granados@...nel.org, lorenzo.stoakes@...cle.com,
	linux-kernel@...r.kernel.org, xu.xin16@....com.cn,
	yang.yang29@....com.cn
Subject: Re: [PATCH linux-next] signal: Remove outdated __send_signal
 references in? do_notify_parent

On 07/28, fan.yu9@....com.cn wrote:
>
> From: Fan Yu <fan.yu9@....com.cn>
>
> The function __send_signal was renamed to __send_signal_locked in
> commit 157cc18122b4 ("signal: Rename send_signal send_signal_locked"),
> making the existing comments in do_notify_parent obsolete.
>
> This patch removes these outdated references to maintain code clarity
> and prevent confusion about the current implementation.
>
> Signed-off-by: Fan Yu <fan.yu9@....com.cn>
> ---
>  kernel/signal.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/kernel/signal.c b/kernel/signal.c
> index e2c928de7d2c..30a52d884f87 100644
> --- a/kernel/signal.c
> +++ b/kernel/signal.c
> @@ -2251,10 +2251,7 @@ bool do_notify_parent(struct task_struct *tsk, int sig)
>  		if (psig->action[SIGCHLD-1].sa.sa_handler == SIG_IGN)
>  			sig = 0;
>  	}
> -	/*
> -	 * Send with __send_signal as si_pid and si_uid are in the
> -	 * parent's namespaces.
> -	 */
> +
>  	if (valid_signal(sig) && sig)
>  		__send_signal_locked(sig, &info, tsk->parent, PIDTYPE_TGID, false);
>  	__wake_up_parent(tsk, tsk->parent);

Acked-by: Oleg Nesterov <oleg@...hat.com>