SUB: Fix dma index -> size calculation

Size calculation is wrong for small dma slabs. Guess no one is using small
dma slabs since no one noticed so far. Fix this by not calculating the
size anymore but simply lookup the size of the dma slab in the regular
kmalloc array.

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

---
 mm/slub.c |   10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

Index: linux-2.6.22-rc4-mm2/mm/slub.c
===================================================================
--- linux-2.6.22-rc4-mm2.orig/mm/slub.c	2007-06-23 12:05:36.000000000 -0700
+++ linux-2.6.22-rc4-mm2/mm/slub.c	2007-06-23 12:05:46.000000000 -0700
@@ -2481,15 +2481,7 @@ static noinline struct kmem_cache *dma_k
 	if (!x)
 		panic("Unable to allocate memory for dma cache\n");
 
-	if (index <= KMALLOC_SHIFT_HIGH)
-		realsize = 1 << index;
-	else {
-		if (index == 1)
-			realsize = 96;
-		else
-			realsize = 192;
-	}
-
+	realsize = kmalloc_caches[index].objsize;
 	text = kasprintf(flags & ~SLUB_DMA, "kmalloc_dma-%d",
 			(unsigned int)realsize);
 	s = create_kmalloc_cache(x, text, realsize, flags);