diff --git a/include/asm-s390/pgtable.h b/include/asm-s390/pgtable.h
index fd336f2..c7f4f8e 100644
--- a/include/asm-s390/pgtable.h
+++ b/include/asm-s390/pgtable.h
@@ -129,7 +129,7 @@
 #define VMEM_MAX_PAGES	((VMEM_MAP_END - VMALLOC_END) / sizeof(struct page))
 #define VMEM_MAX_PFN	min(VMALLOC_START >> PAGE_SHIFT, VMEM_MAX_PAGES)
 #define VMEM_MAX_PHYS	((VMEM_MAX_PFN << PAGE_SHIFT) & ~((16 << 20) - 1))
-#define VMEM_MAP	((struct page *) VMALLOC_END)
+#define vmemmap		((struct page *) VMALLOC_END)
 
 /*
  * A 31 bit pagetable entry of S390 has following format:
@@ -1075,8 +1075,8 @@
 
 #define kern_addr_valid(addr)   (1)
 
-extern int add_shared_memory(unsigned long start, unsigned long size);
-extern int remove_shared_memory(unsigned long start, unsigned long size);
+extern int vmem_add_mapping(unsigned long start, unsigned long size);
+extern int vmem_remove_mapping(unsigned long start, unsigned long size);
 extern int s390_enable_sie(void);
 
 /*
@@ -1084,9 +1084,6 @@
  */
 #define pgtable_cache_init()	do { } while (0)
 
-#define __HAVE_ARCH_MEMMAP_INIT
-extern void memmap_init(unsigned long, int, unsigned long, unsigned long);
-
 #include <asm-generic/pgtable.h>
 
 #endif /* _S390_PAGE_H */