TFD_TIMER_CANCEL_ON_SET  147 fs/timerfd.c   	    (flags & TFD_TIMER_ABSTIME) && (flags & TFD_TIMER_CANCEL_ON_SET)) {
TFD_TIMER_CANCEL_ON_SET   18 include/linux/timerfd.h #define TFD_SETTIME_FLAGS (TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET)