m68k: discontinuous memory support

Fix support for discontinuous memory

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index d897062..bd8e335 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2689,7 +2689,7 @@
 			map = alloc_bootmem_node(pgdat, size);
 		pgdat->node_mem_map = map + (pgdat->node_start_pfn - start);
 	}
-#ifdef CONFIG_FLATMEM
+#ifndef CONFIG_NEED_MULTIPLE_NODES
 	/*
 	 * With no DISCONTIG, the global mem_map is just set as node 0's
 	 */