152 	int old = refcount_read(r);  in __refcount_add_not_zero()  local
155 		if (!old)  in __refcount_add_not_zero()
157 	} while (!atomic_try_cmpxchg_relaxed(&r->refs, &old, old + i));  in __refcount_add_not_zero()
160 		*oldp = old;  in __refcount_add_not_zero()
162 	if (unlikely(old < 0 || old + i < 0))  in __refcount_add_not_zero()
165 	return old;  in __refcount_add_not_zero()
193 	int old = atomic_fetch_add_relaxed(i, &r->refs);  in __refcount_add()  local
196 		*oldp = old;  in __refcount_add()
198 	if (unlikely(!old))  in __refcount_add()
200 	else if (unlikely(old < 0 || old + i < 0))  in __refcount_add()
272 	int old = atomic_fetch_sub_release(i, &r->refs);  in __refcount_sub_and_test()  local
275 		*oldp = old;  in __refcount_sub_and_test()
277 	if (old == i) {  in __refcount_sub_and_test()
282 	if (unlikely(old < 0 || old - i < 0))  in __refcount_sub_and_test()
338 	int old = atomic_fetch_sub_release(1, &r->refs);  in __refcount_dec()  local
341 		*oldp = old;  in __refcount_dec()
343 	if (unlikely(old <= 1))  in __refcount_dec()