static void trigger_event(struct work_struct *work)
{
	struct multipath *m =
		container_of(work, struct multipath, trigger_event);

	dm_table_event(m->ti->table);
}
static void trigger_event(struct work_struct *work)
{
	struct multipath *m =
		container_of(work, struct multipath, trigger_event);

	dm_table_event(m->ti->table);
}