rangelock_init
if (rangelock_init(&range_regular) == -1)
if (rangelock_init(&range_sync) == -1)
int rangelock_init(struct rangelocks **rlsp);
rangelock_init(&shmfd->shm_rl);
rangelock_init(&vp->v_rl);
void rangelock_init(struct rangelock *lock);