rwlock_acquire    431 include/linux/lockdep.h #  define rwlock_acquire(l, s, t, i)		lock_acquire(l, s, t, 0, 2, NULL, i)
rwlock_acquire    434 include/linux/lockdep.h #  define rwlock_acquire(l, s, t, i)		lock_acquire(l, s, t, 0, 1, NULL, i)
rwlock_acquire    439 include/linux/lockdep.h # define rwlock_acquire(l, s, t, i)		do { } while (0)