SPINLOCK_MAGIC
.magic = SPINLOCK_MAGIC, \
SPIN_BUG_ON(lock->magic != SPINLOCK_MAGIC, lock, "bad magic");
lock->magic = SPINLOCK_MAGIC;
SPIN_BUG_ON(READ_ONCE(lock->magic) != SPINLOCK_MAGIC, lock, "bad magic");
SPINLOCK_MAGIC) ||
SPINLOCK_MAGIC) ||
SPINLOCK_MAGIC) ||
SPINLOCK_MAGIC))
SPINLOCK_MAGIC) ||
SPINLOCK_MAGIC) ||
SPINLOCK_MAGIC))