358     KIRQL irql;  in AddInstance()  local
372     m_Parent->Lock(&irql);  in AddInstance()
376         update = m_Parent->DeferUpdateLocked(irql);  in AddInstance()
378     m_Parent->Unlock(irql);  in AddInstance()
392     KIRQL irql;  in RemoveInstance()  local
397     m_Parent->Lock(&irql);  in RemoveInstance()
430         update = m_Parent->DeferUpdateLocked(irql);  in RemoveInstance()
433     m_Parent->Unlock(irql);  in RemoveInstance()
447     KIRQL irql;  in GetInstanceIndex()  local
449     m_Parent->Lock(&irql);  in GetInstanceIndex()
457     m_Parent->Unlock(irql);  in GetInstanceIndex()
470     KIRQL irql;  in GetInstanceReferenced()  local
472     m_Parent->Lock(&irql);  in GetInstanceReferenced()
474     m_Parent->Unlock(irql);  in GetInstanceReferenced()