[PATCH RFC 16/35] mm/pagewalk: drop nth_page() usage within folio in folio_walk_start()

[David Hildenbrand]

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

Signed-off-by: David Hildenbrand <da...@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