mm: remove cast from page_to_nid()

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

Link: https://lkml.kernel.org/r/20240227192337.757313-9-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 02547c8adda0c4300d810dcf89ef2f536e8b4bed..699e850d143cfe6eacf2c9416e207b7eaa751fcf 100644 (file)
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1641,13 +1641,11 @@ 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