nvkm_umem
struct nvkm_umem *umem = nvkm_umem(object);
nvkm_umem = {
struct nvkm_umem *umem;
nvkm_object_ctor(&nvkm_umem, oclass, &umem->object);
static const struct nvkm_object_func nvkm_umem;
struct nvkm_umem *umem;
object = nvkm_object_search(client, handle, &nvkm_umem);
umem = nvkm_umem(object);
struct nvkm_umem *umem = nvkm_umem(object);
struct nvkm_umem *umem = nvkm_umem(object);
#define nvkm_umem(p) container_of((p), struct nvkm_umem, object)