11 #define req_ref_zero_or_close_to_overflow(req)	\  argument
12 	((unsigned int) atomic_read(&(req->refs)) + 127u <= 127u)
14 static inline bool req_ref_inc_not_zero(struct io_kiocb *req)  in req_ref_inc_not_zero()  argument
16 	WARN_ON_ONCE(!(req->flags & REQ_F_REFCOUNT));  in req_ref_inc_not_zero()
17 	return atomic_inc_not_zero(&req->refs);  in req_ref_inc_not_zero()
20 static inline bool req_ref_put_and_test_atomic(struct io_kiocb *req)  in req_ref_put_and_test_atomic()  argument
22 	WARN_ON_ONCE(!(data_race(req->flags) & REQ_F_REFCOUNT));  in req_ref_put_and_test_atomic()
23 	WARN_ON_ONCE(req_ref_zero_or_close_to_overflow(req));  in req_ref_put_and_test_atomic()
24 	return atomic_dec_and_test(&req->refs);  in req_ref_put_and_test_atomic()
27 static inline bool req_ref_put_and_test(struct io_kiocb *req)  in req_ref_put_and_test()  argument
29 	if (likely(!(req->flags & REQ_F_REFCOUNT)))  in req_ref_put_and_test()
32 	WARN_ON_ONCE(req_ref_zero_or_close_to_overflow(req));  in req_ref_put_and_test()
33 	return atomic_dec_and_test(&req->refs);  in req_ref_put_and_test()
36 static inline void req_ref_get(struct io_kiocb *req)  in req_ref_get()  argument
38 	WARN_ON_ONCE(!(req->flags & REQ_F_REFCOUNT));  in req_ref_get()
39 	WARN_ON_ONCE(req_ref_zero_or_close_to_overflow(req));  in req_ref_get()
40 	atomic_inc(&req->refs);  in req_ref_get()
43 static inline void req_ref_put(struct io_kiocb *req)  in req_ref_put()  argument
45 	WARN_ON_ONCE(!(req->flags & REQ_F_REFCOUNT));  in req_ref_put()
46 	WARN_ON_ONCE(req_ref_zero_or_close_to_overflow(req));  in req_ref_put()
47 	atomic_dec(&req->refs);  in req_ref_put()
50 static inline void __io_req_set_refcount(struct io_kiocb *req, int nr)  in __io_req_set_refcount()  argument
52 	if (!(req->flags & REQ_F_REFCOUNT)) {  in __io_req_set_refcount()
53 		req->flags |= REQ_F_REFCOUNT;  in __io_req_set_refcount()
54 		atomic_set(&req->refs, nr);  in __io_req_set_refcount()
58 static inline void io_req_set_refcount(struct io_kiocb *req)  in io_req_set_refcount()  argument
60 	__io_req_set_refcount(req, 1);  in io_req_set_refcount()