ia64: Move RGN_MAP_LIMIT from pgtableh to page.h and use that in ustack.h so we

	can escape include-hell.

include/asm-ia64/page.h

@@ -33,6 +33,8 @@
 #define PERCPU_PAGE_SHIFT	16	/* log2() of max. size of per-CPU area */
 #define PERCPU_PAGE_SIZE	(__IA64_UL_CONST(1) << PERCPU_PAGE_SHIFT)
 
+#define RGN_MAP_LIMIT	((1UL << (4*PAGE_SHIFT - 12)) - PAGE_SIZE)	/* per region addr limit */
+
 #ifdef CONFIG_HUGETLB_PAGE
 
 # if defined(CONFIG_HUGETLB_PAGE_SIZE_4GB)

include/asm-ia64/pgtable.h

@@ -8,7 +8,7 @@
  * This hopefully works with any (fixed) IA-64 page-size, as defined
  * in <asm/page.h> (currently 8192).
  *
- * Copyright (C) 1998-2002 Hewlett-Packard Co
+ * Copyright (C) 1998-2003 Hewlett-Packard Co
  *	David Mosberger-Tang <davidm@hpl.hp.com>
  */
 
@@ -204,7 +204,6 @@ ia64_phys_addr_valid (unsigned long addr)
 #define set_pte(ptep, pteval)	(*(ptep) = (pteval))
 
 #define RGN_SIZE	(1UL << 61)
-#define RGN_MAP_LIMIT	((1UL << (4*PAGE_SHIFT - 12)) - PAGE_SIZE)	/* per region addr limit */
 #define RGN_KERNEL	7
 
 #define VMALLOC_START		0xa000000200000000

include/asm-ia64/ustack.h

@@ -5,7 +5,7 @@
  * Constants for the user stack size
  */
 
-#include <asm/pgtable.h>
+#include <asm/page.h>
 
 /* The absolute hard limit for stack size is 1/2 of the mappable space in the region */
 #define MAX_USER_STACK_SIZE	(RGN_MAP_LIMIT/2)