static __poll_t cgroup_file_poll(struct kernfs_open_file *of, poll_table *pt)
{
	struct cftype *cft = of_cft(of);

	if (cft->poll)
		return cft->poll(of, pt);

	return kernfs_generic_poll(of, pt);
}
static __poll_t cgroup_file_poll(struct kernfs_open_file *of, poll_table *pt)
{
	struct cftype *cft = of_cft(of);

	if (cft->poll)
		return cft->poll(of, pt);

	return kernfs_generic_poll(of, pt);
}