drm_gem_shmem_is_purgeable
drm_WARN_ON(obj->dev, !drm_gem_shmem_is_purgeable(shmem));
if (drm_gem_shmem_is_purgeable(shmem))
if (drm_gem_shmem_is_purgeable(shmem) &&
ret = drm_gem_shmem_is_purgeable(shmem);
ret = drm_gem_shmem_is_purgeable(shmem);