11 static inline int init_rwsem(struct rw_semaphore *sem)  in init_rwsem()  argument
13 	return pthread_rwlock_init(&sem->lock, NULL);  in init_rwsem()
16 static inline int exit_rwsem(struct rw_semaphore *sem)  in exit_rwsem()  argument
18 	return pthread_rwlock_destroy(&sem->lock);  in exit_rwsem()
21 static inline int down_read(struct rw_semaphore *sem)  in down_read()  argument
23 	return pthread_rwlock_rdlock(&sem->lock);  in down_read()
26 static inline int up_read(struct rw_semaphore *sem)  in up_read()  argument
28 	return pthread_rwlock_unlock(&sem->lock);  in up_read()
31 static inline int down_write(struct rw_semaphore *sem)  in down_write()  argument
33 	return pthread_rwlock_wrlock(&sem->lock);  in down_write()
36 static inline int up_write(struct rw_semaphore *sem)  in up_write()  argument
38 	return pthread_rwlock_unlock(&sem->lock);  in up_write()
41 #define down_read_nested(sem, subclass)		down_read(sem)  argument
42 #define down_write_nested(sem, subclass)	down_write(sem)  argument