amdgpu_ttm_tt_affect_userptr
if (!amdgpu_ttm_tt_affect_userptr(bo->tbo.ttm, start, end))
if (amdgpu_ttm_tt_affect_userptr(bo->tbo.ttm,
bool amdgpu_ttm_tt_affect_userptr(struct ttm_tt *ttm, unsigned long start,