MIN_LS_INTERVAL
tv.tv_sec = MIN_LS_INTERVAL;
if (v->changed + MIN_LS_INTERVAL >= now)
tv.tv_sec = MIN_LS_INTERVAL;
tv.tv_sec = MIN_LS_INTERVAL;
if (v->changed + MIN_LS_INTERVAL >= now)
tv.tv_sec = MIN_LS_INTERVAL;