diff --git a/arch/h8300/mm/memory.c b/arch/h8300/mm/memory.c
index ccd6ade..40d8aa8 100644
--- a/arch/h8300/mm/memory.c
+++ b/arch/h8300/mm/memory.c
@@ -44,8 +44,8 @@
 {
 }
 
-/* Map some physical address range into the kernel address space. The
- * code is copied and adapted from map_chunk().
+/*
+ * Map some physical address range into the kernel address space.
  */
 
 unsigned long kernel_map(unsigned long paddr, unsigned long size,
diff --git a/arch/m68k/mm/kmap.c b/arch/m68k/mm/kmap.c
index cf93cdd..6934584 100644
--- a/arch/m68k/mm/kmap.c
+++ b/arch/m68k/mm/kmap.c
@@ -99,8 +99,7 @@
 #endif
 
 /*
- * Map some physical address range into the kernel address space. The
- * code is copied and adapted from map_chunk().
+ * Map some physical address range into the kernel address space.
  */
 /* Rewritten by Andreas Schwab to remove all races. */
 
diff --git a/arch/m68knommu/mm/memory.c b/arch/m68knommu/mm/memory.c
index f93b88b..d5b9e13 100644
--- a/arch/m68knommu/mm/memory.c
+++ b/arch/m68knommu/mm/memory.c
@@ -24,7 +24,6 @@
 
 /*
  * Map some physical address range into the kernel address space.
- * The code is copied and adapted from map_chunk().
  */
 
 unsigned long kernel_map(unsigned long paddr, unsigned long size,