PERIOD
#define periodchar(c) ((c) == PERIOD)
int pch = PERIOD, ch = *dn++;
ns_to_ktime(PERIOD), 0,
hrtimer_forward(hrtimer, now, ns_to_ktime(PERIOD));
if (current == PERIOD && (udfLen - index -1) <= EXT_SIZE) {
else if (current != PERIOD && current != SPACE) {
newName[newIndex++] = PERIOD;