> +bool static_dev_dax(struct dev_dax *dev_dax) > +{ > + return is_static(dev_dax->region); > +} > +EXPORT_SYMBOL_GPL(static_dev_dax); This function would massively benefit from documentic what a static DAX region is and why someone would want to care. Because even as someone occasionally dabbling with the DAX code I have no idea at all what that means.