if (time_after
(jiffies - data->last_updated, (unsigned long) (HZ + HZ / 2))
|| time_before(jiffies, data->last_updated) || !data->valid) {
if (time_after
(jiffies - data->last_updated, (unsigned long) (HZ + HZ / 2))
|| time_before(jiffies, data->last_updated) || !data->valid) {