NOTIFY_STOP_MASK 157 include/linux/notifier.h #define NOTIFY_BAD (NOTIFY_STOP_MASK|0x0002) NOTIFY_STOP_MASK 162 include/linux/notifier.h #define NOTIFY_STOP (NOTIFY_OK|NOTIFY_STOP_MASK) NOTIFY_STOP_MASK 167 include/linux/notifier.h return NOTIFY_STOP_MASK | (NOTIFY_OK - err); NOTIFY_STOP_MASK 173 include/linux/notifier.h ret &= ~NOTIFY_STOP_MASK; NOTIFY_STOP_MASK 90 kernel/notifier.c if ((ret & NOTIFY_STOP_MASK) == NOTIFY_STOP_MASK)