[PATCH] SN2 build fix, take two

I want to change my vote :-) The problem isn't a spurious extra "#else"
(which Paul's patch removed) ...  it is a missing "#endif"

Here's a patch that puts the #else back, adds the #endif, and fixes the
whitespace to make this nested mess of pre-processor noise a bit more
legible. 
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

include/asm-ia64/page.h

@@ -89,10 +89,11 @@ extern struct page *vmem_map;
 #  define pfn_valid(pfn)	(((pfn) < max_mapnr) && ia64_pfn_valid(pfn))
 #  define page_to_pfn(page)	((unsigned long) (page - vmem_map))
 #  define pfn_to_page(pfn)	(vmem_map + (pfn))
+# else
+#  define pfn_valid(pfn)	(((pfn) < max_mapnr) && ia64_pfn_valid(pfn))
+#  define page_to_pfn(page)	((unsigned long) (page - mem_map))
+#  define pfn_to_page(pfn)	(mem_map + (pfn))
 # endif
-#define pfn_valid(pfn)		(((pfn) < max_mapnr) && ia64_pfn_valid(pfn))
-#define page_to_pfn(page)	((unsigned long) (page - mem_map))
-#define pfn_to_page(pfn)	(mem_map + (pfn))
 #endif /* CONFIG_DISCONTIGMEM */
 
 #define page_to_phys(page)	(page_to_pfn(page) << PAGE_SHIFT)