- } else {
- /*
- * In this case, swapped-out-but-not-discarded swap-cache
- * is remapped. So, no need to update page->mapping here.
- * We convice anon_vma poitned by page->mapping is not obsolete
- * because vma->anon_vma is necessary to be a family of it.
- */
- if (PageAnon(page))
- return;
- }