rwsem_acquire_read
rwsem_acquire_read(&q->q_lockdep_map, 0, 0, _RET_IP_);
rwsem_acquire_read(&q->io_lockdep_map, 0, 0, _RET_IP_);
rwsem_acquire_read(&q->io_lockdep_map, 0, 0, _RET_IP_);
rwsem_acquire_read(&q->io_lockdep_map, 0, 0, _RET_IP_);
rwsem_acquire_read(&sem->dep_map, subclass, 0, _RET_IP_);
rwsem_acquire_read(&sem->dep_map, 0, 1, _RET_IP_);
rwsem_acquire_read(&owner->lock##_map, 0, 0, _THIS_IP_)
rwsem_acquire_read(&owner->vfs_inode.lock.dep_map, 0, 0, _THIS_IP_)
rwsem_acquire_read(&owner->btrfs_state_change_map[i], 0, 0, _THIS_IP_)
rwsem_acquire_read(&journal->j_trans_commit_map, 0, 1, _THIS_IP_);
rwsem_acquire_read(&kn->dep_map, 0, 1, _RET_IP_);
rwsem_acquire_read(&lockres->l_lockdep_map, l_subclass,
rwsem_acquire_read(&sem->dep_map, 0, 1, _RET_IP_);
rwsem_acquire_read(&sem->dep_map, 0, 0, _RET_IP_);
rwsem_acquire_read(&sem->dep_map, 0, 0, _RET_IP_);
rwsem_acquire_read(&sem->dep_map, 0, 0, _RET_IP_);
rwsem_acquire_read(&sem->dep_map, 0, 0, _RET_IP_);
rwsem_acquire_read(&sem->dep_map, 0, 1, _RET_IP_);
rwsem_acquire_read(&sem->dep_map, subclass, 0, _RET_IP_);
rwsem_acquire_read(&sem->dep_map, subclass, 0, _RET_IP_);
rwsem_acquire_read(&zsl->dep_map, 0, 0, _RET_IP_);