[PATCH] ia64: small update for hugetlb

Please find attached a small update that syncs up the definition and
usage of check_valid_hugepage_range across different arch dependent and
independent files.

arch/ia64/mm/hugetlbpage.c

@@ -117,7 +117,7 @@ int is_aligned_hugepage_range(unsigned long addr, unsigned long len)
 /* This function checks if the address and address+len falls out of HugeTLB region.  It
  * return -EINVAL if any part of address range falls in HugeTLB region.
  */
-int  is_invalid_hugepage_range(unsigned long addr, unsigned long len)
+int  check_valid_hugepage_range(unsigned long addr, unsigned long len)
 {
 	if (REGION_NUMBER(addr) == REGION_HPAGE)
 		return -EINVAL;

include/asm-ia64/page.h

@@ -60,6 +60,7 @@
 # define HPAGE_SIZE	(__IA64_UL_CONST(1) << HPAGE_SHIFT)
 # define HPAGE_MASK	(~(HPAGE_SIZE - 1))
 # define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
+# define ARCH_HAS_VALID_HUGEPAGE_RANGE
 #endif /* CONFIG_HUGETLB_PAGE */
 
 #ifdef __ASSEMBLY__
@@ -131,9 +132,7 @@ typedef union ia64_va {
 # define htlbpage_to_page(x)	((REGION_NUMBER(x) << 61)				\
 				 | (REGION_OFFSET(x) >> (HPAGE_SHIFT-PAGE_SHIFT)))
 # define HUGETLB_PAGE_ORDER	(HPAGE_SHIFT - PAGE_SHIFT)
-extern int  is_invalid_hugepage_range(unsigned long addr, unsigned long len);
-#else
-#define is_invalid_hugepage_range(addr, len) 0
+extern int  check_valid_hugepage_range(unsigned long addr, unsigned long len);
 #endif
 
 static __inline__ int