[PATCH] slab: remove SLAB_DMA

SLAB_DMA is an alias of GFP_DMA. This is the last one so we
remove the leftover comment too.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/usb/core/buffer.c b/drivers/usb/core/buffer.c
index 840442a..c3915dc 100644
--- a/drivers/usb/core/buffer.c
+++ b/drivers/usb/core/buffer.c
@@ -93,7 +93,7 @@
 }
 
 
-/* sometimes alloc/free could use kmalloc with SLAB_DMA, for
+/* sometimes alloc/free could use kmalloc with GFP_DMA, for
  * better sharing and to leverage mm/slab.c intelligence.
  */