mm: Turn page_anon_vma() into folio_anon_vma()

Move the prototype from mm.h to mm/internal.h and convert all callers
to pass a folio.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/mm/ksm.c b/mm/ksm.c
index ea82fef93a31..b25d545e0cd1 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -2554,7 +2554,8 @@ void __ksm_exit(struct mm_struct *mm)
 struct page *ksm_might_need_to_copy(struct page *page,
 			struct vm_area_struct *vma, unsigned long address)
 {
-	struct anon_vma *anon_vma = page_anon_vma(page);
+	struct folio *folio = page_folio(page);
+	struct anon_vma *anon_vma = folio_anon_vma(folio);
 	struct page *new_page;
 
 	if (PageKsm(page)) {