157 	int old = refcount_read(r);  in refcount_add_not_zero()  local
160 		if (!old)  in refcount_add_not_zero()
162 	} while (!atomic_try_cmpxchg_relaxed(&r->refs, &old, old + i));  in refcount_add_not_zero()
164 	if (unlikely(old < 0 || old + i < 0))  in refcount_add_not_zero()
167 	return old;  in refcount_add_not_zero()
188 	int old = atomic_fetch_add_relaxed(i, &r->refs);  in refcount_add()  local
190 	if (unlikely(!old))  in refcount_add()
192 	else if (unlikely(old < 0 || old + i < 0))  in refcount_add()
253 	int old = atomic_fetch_sub_release(i, &r->refs);  in refcount_sub_and_test()  local
255 	if (old == i) {  in refcount_sub_and_test()
260 	if (unlikely(old < 0 || old - i < 0))  in refcount_sub_and_test()