57 	unsigned old, new;  in refcount_inc_not_zero()  local
60 		old = atomic_read(&rc->rc_count);  in refcount_inc_not_zero()
61 		if (old == 0)  in refcount_inc_not_zero()
63 		new = old + 1;  in refcount_inc_not_zero()
64 	} while (atomic_cmpxchg(&rc->rc_count, old, new) != old);  in refcount_inc_not_zero()
66 	return old;  in refcount_inc_not_zero()
72 	unsigned old, new;  in refcount_dec_and_test()  local
75 		old = atomic_read(&rc->rc_count);  in refcount_dec_and_test()
76 		KASSERT(old);  in refcount_dec_and_test()
77 		new = old - 1;  in refcount_dec_and_test()
78 	} while (atomic_cmpxchg(&rc->rc_count, old, new) != old);  in refcount_dec_and_test()
80 	return old == 1;  in refcount_dec_and_test()
94 	unsigned old, new;  in refcount_dec_and_mutex_lock()  local
97 		old = atomic_read(&rc->rc_count);  in refcount_dec_and_mutex_lock()
98 		KASSERT(old);  in refcount_dec_and_mutex_lock()
99 		if (old == 1) {  in refcount_dec_and_mutex_lock()
106 		new = old - 1;  in refcount_dec_and_mutex_lock()
107 	} while (atomic_cmpxchg(&rc->rc_count, old, new) != old);  in refcount_dec_and_mutex_lock()
109 	KASSERT(old != 1);  in refcount_dec_and_mutex_lock()