linux-kernel - Re: [PATCH 10/10] Bsdacct: account dying tasks in all relevant namespaces

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Date:	Thu, 15 May 2008 19:44:38 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Pavel Emelyanov <xemul@...nvz.org>
Cc:	Oleg Nesterov <oleg@...sign.ru>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 10/10] Bsdacct: account dying tasks in all relevant
 namespaces

On Thu, 15 May 2008 15:11:55 +0400 Pavel Emelyanov <xemul@...nvz.org> wrote:

> +/**
> + * acct_process - now just a wrapper around do_acct_process

comment seems wrong.

> + * handles process accounting for an exiting task
> + */
> +void acct_process(void)
> +{
> +	struct pid_namespace *ns;
> +
> +	for (ns = task_active_pid_ns(current); ns != NULL; ns = ns->parent)
> +		acct_process_in_ns(ns);
> +}

Is it really safe to walk this list locklessly?
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