diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 12c98dfc31b14481f3f605834a6d9a138a624ea0..3b6fb71bbeb31bbd8edc9622ca10baafa97012ec 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -1200,13 +1200,13 @@ unsigned long __init node_memmap_size_bytes(int, unsigned long, unsigned long);
  * the zone and PFN linkages are still valid. This is expensive, but walkers
  * of the full memmap are extremely rare.
  */
-int memmap_valid_within(unsigned long pfn,
+bool memmap_valid_within(unsigned long pfn,
 					struct page *page, struct zone *zone);
 #else
-static inline int memmap_valid_within(unsigned long pfn,
+static inline bool memmap_valid_within(unsigned long pfn,
 					struct page *page, struct zone *zone)
 {
-	return 1;
+	return true;
 }
 #endif /* CONFIG_ARCH_HAS_HOLES_MEMORYMODEL */
 
diff --git a/mm/mmzone.c b/mm/mmzone.c
index 7d87ebb0d63249ead3ff2f3e2f0b096b590cafaf..52687fb4de6f46ebcb095987b9474e3957b5eafd 100644
--- a/mm/mmzone.c
+++ b/mm/mmzone.c
@@ -72,16 +72,16 @@ struct zoneref *next_zones_zonelist(struct zoneref *z,
 }
 
 #ifdef CONFIG_ARCH_HAS_HOLES_MEMORYMODEL
-int memmap_valid_within(unsigned long pfn,
+bool memmap_valid_within(unsigned long pfn,
 					struct page *page, struct zone *zone)
 {
 	if (page_to_pfn(page) != pfn)
-		return 0;
+		return false;
 
 	if (page_zone(page) != zone)
-		return 0;
+		return false;
 
-	return 1;
+	return true;
 }
 #endif /* CONFIG_ARCH_HAS_HOLES_MEMORYMODEL */