Redirect GFP_DMA allocations to ZONE_NORMAL if CONFIG_ZONE_DMA is not set

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

Index: linux-2.6.17-mm6/include/linux/gfp.h
===================================================================
--- linux-2.6.17-mm6.orig/include/linux/gfp.h	2006-07-04 14:41:53.820668198 -0700
+++ linux-2.6.17-mm6/include/linux/gfp.h	2006-07-04 15:33:07.401117400 -0700
@@ -11,7 +11,12 @@ struct vm_area_struct;
  * GFP bitmasks..
  */
 /* Zone modifiers in GFP_ZONEMASK (see linux/mmzone.h - low three bits) */
+
+#ifdef CONFIG_ZONE_DMA
 #define __GFP_DMA	((__force gfp_t)0x01u)
+#else
+#define __GFP_DMA	((__force gfp_t)0x00)	/* NORMAL is DMA */
+#endif
 
 #ifdef CONFIG_HIGHMEM
 #define __GFP_HIGHMEM	((__force gfp_t)0x02u)