dma: make dma pool to use kmalloc_node

Using dev_to_node(&dev->dev) to get node, and kmalloc_node to dma buffer on
corresponding node dma pool

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Cc: Andi Kleen <ak@suse.de>
Cc: Christoph Lameter <clameter@sgi.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/base/dmapool.c

@@ -127,7 +127,7 @@ dma_pool_create (const char *name, struct device *dev,
 	} else if (allocation < size)
 		return NULL;
 
-	if (!(retval = kmalloc (sizeof *retval, GFP_KERNEL)))
+	if (!(retval = kmalloc_node (sizeof *retval, GFP_KERNEL, dev_to_node(dev))))
 		return retval;
 
 	strlcpy (retval->name, name, sizeof retval->name);