[PATCH 21/22] hugetlb: Remove uses of compound_dtor and compound_nr

["Matthew Wilcox (Oracle)" <willy@xxxxxxxxxxxxx>]

Convert the entire file to use the folio equivalents.

Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
 mm/hugetlb.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 0a6bb471c1a7..72f21bdc581e 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -2042,11 +2042,12 @@ static bool prep_compound_gigantic_folio_for_demote(struct folio *folio,
  */
 int PageHuge(struct page *page)
 {
+	struct folio *folio;
+
 	if (!PageCompound(page))
 		return 0;
-
-	page = compound_head(page);
-	return page[1].compound_dtor == HUGETLB_PAGE_DTOR;
+	folio = page_folio(page);
+	return folio->_folio_dtor == HUGETLB_PAGE_DTOR;
 }
 EXPORT_SYMBOL_GPL(PageHuge);
 
@@ -2056,10 +2057,11 @@ EXPORT_SYMBOL_GPL(PageHuge);
  */
 int PageHeadHuge(struct page *page_head)
 {
-	if (!PageHead(page_head))
+	struct folio *folio = (struct folio *)page_head;
+	if (!folio_test_large(folio))
 		return 0;
 
-	return page_head[1].compound_dtor == HUGETLB_PAGE_DTOR;
+	return folio->_folio_dtor == HUGETLB_PAGE_DTOR;
 }
 EXPORT_SYMBOL_GPL(PageHeadHuge);
 
-- 
2.35.1