Re: [PATCH v9] kernel/fork: beware of __put_task_struct calling context

[Matthew Wilcox]

On Tue, May 16, 2023 at 04:14:41PM -0300, Wander Lairson Costa wrote:
> +void __put_task_struct_rcu_cb(struct rcu_head *rhp)
> +{
> +	struct task_struct *task = container_of(rhp, struct task_struct, rcu);
> +
> +	__put_task_struct(task);
> +}
> +EXPORT_SYMBOL_GPL(__put_task_struct_rcu_cb);

Why does this need to be exported when its only caller is within the
main kernel and cannot possibly be built as a module?