nvdimm_volatile_region_create
p->region = nvdimm_volatile_region_create(p->bus, &ndr_desc);
nfit_spa->nd_region = nvdimm_volatile_region_create(nvdimm_bus,
region = nvdimm_volatile_region_create(bus, &ndr_desc);
EXPORT_SYMBOL_GPL(nvdimm_volatile_region_create);
struct nd_region *nvdimm_volatile_region_create(struct nvdimm_bus *nvdimm_bus,