[PATCH] x86_64: Remove obsolete ARCH_HAS_ATOMIC_UNSIGNED and page_flags_t

Has been introduced for x86-64 at some point to save memory
in struct page, but has been obsolete for some time. Just
remove it.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/mm/filemap.c b/mm/filemap.c
index 5d6e4c2..33a28bf 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -134,7 +134,7 @@
 	struct address_space *mapping;
 	struct page *page;
 
-	page = container_of((page_flags_t *)word, struct page, flags);
+	page = container_of((unsigned long *)word, struct page, flags);
 
 	/*
 	 * page_mapping() is being called without PG_locked held.
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e8810a7..259a71b 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -128,7 +128,7 @@
 	printk(KERN_EMERG "Bad page state at %s (in process '%s', page %p)\n",
 		function, current->comm, page);
 	printk(KERN_EMERG "flags:0x%0*lx mapping:%p mapcount:%d count:%d\n",
-		(int)(2*sizeof(page_flags_t)), (unsigned long)page->flags,
+		(int)(2*sizeof(unsigned long)), (unsigned long)page->flags,
 		page->mapping, page_mapcount(page), page_count(page));
 	printk(KERN_EMERG "Backtrace:\n");
 	dump_stack();