#define spin_lock_init(lp) do { (lp)->lock = 0; } while(0)
#define spin_unlock_wait(lp) do { barrier(); } while(((volatile spinlock_t *)(lp))->lock)
#define spin_is_locked(x) ((x)->lock != 0)
+#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock)
extern inline void _raw_spin_lock(spinlock_t *lp)
{