MSM_MADV_DONTNEED
case MSM_MADV_DONTNEED:
if (msm_obj->madv == MSM_MADV_DONTNEED)
GEM_WARN_ON(msm_obj->madv != MSM_MADV_DONTNEED);
case MSM_MADV_DONTNEED:
return (msm_obj->madv == MSM_MADV_DONTNEED) && msm_obj->sgt &&