Remote alloc_pages() from slab allocator

The slab allocator never uses alloc_pages since kmem_getpages() is always
called with a valid nodeid. Remove the branch and the code from kmem_getpages()

Signed-off-by: Christoph Lameter <clameter@sgi.com>

Index: linux-2.6.14-mm1/mm/slab.c
===================================================================
--- linux-2.6.14-mm1.orig/mm/slab.c	2005-11-10 11:06:34.000000000 -0800
+++ linux-2.6.14-mm1/mm/slab.c	2005-11-10 11:41:15.000000000 -0800
@@ -1193,11 +1194,7 @@ static void *kmem_getpages(kmem_cache_t 
 	int i;
 
 	flags |= cachep->gfpflags;
-	if (likely(nodeid == -1)) {
-		page = alloc_pages(flags, cachep->gfporder);
-	} else {
-		page = alloc_pages_node(nodeid, flags, cachep->gfporder);
-	}
+	page = alloc_pages_node(nodeid, flags, cachep->gfporder);
 	if (!page)
 		return NULL;
 	addr = page_address(page);