drm_vma_offset_remove
drm_vma_offset_remove(dev->vma_offset_manager, &obj->vma_node);
EXPORT_SYMBOL(drm_vma_offset_remove);
void drm_vma_offset_remove(struct drm_vma_offset_manager *mgr,
drm_vma_offset_remove(&bdev->vma_manager, &bo->vma_node);