42 #define	down_write(_rw)			sx_xlock(&(_rw)->sx)  argument
43 #define	up_write(_rw)			sx_xunlock(&(_rw)->sx)  argument
44 #define	down_read(_rw)			sx_slock(&(_rw)->sx)  argument
45 #define	up_read(_rw)			sx_sunlock(&(_rw)->sx)  argument
46 #define	down_read_trylock(_rw)		!!sx_try_slock(&(_rw)->sx)  argument
47 #define	down_read_killable(_rw)		linux_down_read_killable(_rw)  argument
48 #define	down_write_trylock(_rw)		!!sx_try_xlock(&(_rw)->sx)  argument
49 #define	down_write_killable(_rw)	linux_down_write_killable(_rw)  argument
50 #define	downgrade_write(_rw)		sx_downgrade(&(_rw)->sx)  argument
51 #define	down_read_nested(_rw, _sc)	down_read(_rw)  argument
52 #define	init_rwsem(_rw)			linux_init_rwsem(_rw, rwsem_name("lnxrwsem"))  argument
53 #define	down_write_nest_lock(sem, _rw)	down_write(_rw)  argument