SLUB: Use correct flags to check for DMA cache

We use a GFP mask to check the SLAB flags if this is a DMA cache.

Fix this.

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

Index: linux-2.6.21-rc5-mm4/mm/slub.c
===================================================================
--- linux-2.6.21-rc5-mm4.orig/mm/slub.c	2007-04-04 09:59:05.000000000 -0700
+++ linux-2.6.21-rc5-mm4/mm/slub.c	2007-04-04 10:01:14.000000000 -0700
@@ -678,8 +678,8 @@ static struct page *allocate_slab(struct
 	if (s->order)
 		flags |= __GFP_COMP;
 
-	if (s->flags & SLUB_DMA)
-		flags |= GFP_DMA;
+	if (s->flags & SLAB_CACHE_DMA)
+		flags |= SLUB_DMA;
 
 	if (node == -1)
 		page = alloc_pages(flags, s->order);