[PATCH 6/9] mm: Remove a call to compound_head() from is_page_hwpoison()

["Matthew Wilcox (Oracle)" <willy@infradead.org>]

We can call it only once instead of twice.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
---
 include/linux/page-flags.h | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 6fb3cd42ee59..94eb8a11a321 100644
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -1065,11 +1065,14 @@ static inline bool PageHuge(const struct page *page)
  * best effort only and inherently racy: there is no way to synchronize with
  * failing hardware.
  */
-static inline bool is_page_hwpoison(struct page *page)
+static inline bool is_page_hwpoison(const struct page *page)
 {
+	const struct folio *folio;
+
 	if (PageHWPoison(page))
 		return true;
-	return PageHuge(page) && PageHWPoison(compound_head(page));
+	folio = page_folio(page);
+	return folio_test_hugetlb(folio) && PageHWPoison(&folio->page);
 }
 
 extern bool is_free_buddy_page(struct page *page);
-- 
2.43.0