> Allow tasks to migrate from one container to the other. We migrate
> mm_struct's mem_container only when the thread group id migrates.

> +	/*
> +	 * Only thread group leaders are allowed to migrate, the mm_struct is
> +	 * in effect owned by the leader
> +	 */
> +	if (p->tgid != p->pid)
> +		goto out;

does it mean that you can't move a process between containers
once its thread group leader exited?

YAMAMOTO Takashi
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