#define cfs_up(s) cfs_mutex_up(s)
#define cfs_mutex_down(s) __down(s)
#define cfs_down(s) cfs_mutex_down(s)
+#define cfs_mutex_down_interruptible(s) __down_interruptible(s)
+#define cfs_down_interruptible(s) cfs_mutex_down_interruptible(s)
#define cfs_init_mutex(x) cfs_sema_init(x, 1)
#define cfs_init_mutex_locked(x) cfs_sema_init(x, 0)