1 #ifndef __XFS_SUPPORT_RWSEM_H__
2 #define __XFS_SUPPORT_RWSEM_H__
9 #define rw_semaphore sx
11 #define init_rwsem(sem) sx_init(sem, "rwsem")
12 #define free_rwsem(sem) sx_destroy(sem)
13 #define down_read(sem) sx_slock(sem)
14 #define down_read_trylock(sem) sx_try_slock(sem)
15 #define down_write(sem) sx_xlock(sem)
16 #define down_write_trylock(sem) sx_try_xlock(sem)
17 #define up_read(sem) sx_sunlock(sem)
18 #define up_write(sem) sx_xunlock(sem)
19 #define downgrade_write(sem) sx_downgrade(sem)
21 #endif /* __XFS_SUPPORT_RWSEM_H__ */