nvdimm_allocate_dpa
res = nvdimm_allocate_dpa(ndd, &label_id,
res = nvdimm_allocate_dpa(ndd, label_id, nd_mapping->start, n);
new_res = nvdimm_allocate_dpa(ndd, label_id,
struct resource *nvdimm_allocate_dpa(struct nvdimm_drvdata *ndd,