[PATCH v2 17/37] mm/pagewalk: drop nth_page() usage within folio in folio_walk_start()

David Hildenbrand
2025-09-01T15:09:06Z

It's no longer required to use nth_page() within a folio, so let's just
drop the nth_page() in folio_walk_start().

Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
mm/pagewalk.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/pagewalk.c b/mm/pagewalk.c
index c6753d370ff4e..9e4225e5fcf5c 100644
--- a/mm/pagewalk.c
+++ b/mm/pagewalk.c
@@ -1004,7 +1004,7 @@ struct folio *folio_walk_start(struct folio_walk *fw,
found:
if (expose_page)
/* Note: Offset from the mapped page, not the folio start. */
- fw->page = nth_page(page, (addr & (entry_size - 1)) >> PAGE_SHIFT);
+ fw->page = page + ((addr & (entry_size - 1)) >> PAGE_SHIFT);
else
fw->page = NULL;
fw->ptl = ptl;
--
2.50.1