linux-kernel - Re: [PATCH 4/5] [V2] Define is_global_init() and is_container

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Message-Id: <20070720154113.db9fb8a4.akpm@linux-foundation.org>
Date:	Fri, 20 Jul 2007 15:41:13 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	sukadev@...ibm.com
Cc:	linux-kernel@...r.kernel.org,
	Containers <containers@...ts.osdl.org>,
	Oleg Nesterov <oleg@...sign.ru>,
	Pavel Emelianov <xemul@...nvz.org>
Subject: Re: [PATCH 4/5] [V2] Define is_global_init() and
 is_container_init()

On Thu, 19 Jul 2007 00:21:58 -0700
sukadev@...ibm.com wrote:

> --- lx26-22-rc6-mm1a.orig/kernel/pid.c	2007-07-16 12:55:15.000000000 -0700
> +++ lx26-22-rc6-mm1a/kernel/pid.c	2007-07-16 13:10:48.000000000 -0700
> @@ -69,6 +69,13 @@ struct pid_namespace init_pid_ns = {
>  	.last_pid = 0,
>  	.child_reaper = &init_task
>  };
> +EXPORT_SYMBOL(init_pid_ns);
> +
> +int is_global_init(struct task_struct *tsk)
> +{
> +	return tsk == init_pid_ns.child_reaper;
> +}
> +EXPORT_SYMBOL(is_global_init);

I don't immediately see why init_pid_ns was exported to modules.

It would need to be exported if is_global_init() was made static inline in a
header (which seems like a sensible thing to do), but it wasn't.

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