static void io_ring_file_ref_switch(struct work_struct *work)
{
	struct fixed_file_data *data;

	data = container_of(work, struct fixed_file_data, ref_work);
	io_ring_file_ref_flush(data);
	percpu_ref_get(&data->refs);
	percpu_ref_switch_to_percpu(&data->refs);
}
static void io_ring_file_ref_switch(struct work_struct *work)
{
	struct fixed_file_data *data;

	data = container_of(work, struct fixed_file_data, ref_work);
	io_ring_file_ref_flush(data);
	percpu_ref_get(&data->refs);
	percpu_ref_switch_to_percpu(&data->refs);
}