dma_resv_list_entry
dma_resv_list_entry(list, i, NULL, &fence, NULL);
dma_resv_list_entry(old, i, obj, &fence, &usage);
dma_resv_list_entry(fobj, i, obj, &old, &old_usage);
dma_resv_list_entry(list, i, obj, &old, NULL);
dma_resv_list_entry(cursor->fences, cursor->index++,
dma_resv_list_entry(cursor->fences, cursor->index++,