#ifdef CONFIG_HUGETLB_PAGE
int PageHuge(struct page *page);
-int PageHeadHuge(struct page *page);
-static inline bool folio_test_hugetlb(struct folio *folio)
-{
- return PageHeadHuge(&folio->page);
-}
+bool folio_test_hugetlb(struct folio *folio);
#else
TESTPAGEFLAG_FALSE(Huge, hugetlb)
-TESTPAGEFLAG_FALSE(HeadHuge, headhuge)
#endif
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
}
EXPORT_SYMBOL_GPL(PageHuge);
-/*
- * PageHeadHuge() only returns true for hugetlbfs head page, but not for
- * normal or transparent huge pages.
+/**
+ * folio_test_hugetlb - Determine if the folio belongs to hugetlbfs
+ * @folio: The folio to test.
+ *
+ * Context: Any context. Caller should have a reference on the folio to
+ * prevent it from being turned into a tail page.
+ * Return: True for hugetlbfs folios, false for anon folios or folios
+ * belonging to other filesystems.
*/
-int PageHeadHuge(struct page *page_head)
+bool folio_test_hugetlb(struct folio *folio)
{
- struct folio *folio = (struct folio *)page_head;
if (!folio_test_large(folio))
- return 0;
+ return false;
return folio->_folio_dtor == HUGETLB_PAGE_DTOR;
}
-EXPORT_SYMBOL_GPL(PageHeadHuge);
+EXPORT_SYMBOL_GPL(folio_test_hugetlb);
/*
* Find and lock address space (mapping) in write mode.