[PATCH 8/8] mm: Remove cast from page_to_nid()

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

Now that PF_POISONED_CHECK() can take a const argument, we can drop
the cast.

Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
 include/linux/mm.h | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index c4a76520c967..21a8cfbe75aa 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1662,13 +1662,11 @@ static inline int page_zone_id(struct page *page)
 }
 
 #ifdef NODE_NOT_IN_PAGE_FLAGS
-extern int page_to_nid(const struct page *page);
+int page_to_nid(const struct page *page);
 #else
 static inline int page_to_nid(const struct page *page)
 {
-	struct page *p = (struct page *)page;
-
-	return (PF_POISONED_CHECK(p)->flags >> NODES_PGSHIFT) & NODES_MASK;
+	return (PF_POISONED_CHECK(page)->flags >> NODES_PGSHIFT) & NODES_MASK;
 }
 #endif
 
-- 
2.43.0