diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index 92e10cf..f74716b 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -16,8 +16,7 @@
 	struct page *page;
 	int node;
 	unsigned int offset;
-	/* Lots of wasted space */
-} ____cacheline_aligned_in_smp;
+};
 
 struct kmem_cache_node {
 	spinlock_t list_lock;	/* Protect partial list and nr_partial */
@@ -62,7 +61,11 @@
 	int defrag_ratio;
 	struct kmem_cache_node *node[MAX_NUMNODES];
 #endif
-	struct kmem_cache_cpu cpu_slab[NR_CPUS];
+#ifdef CONFIG_SMP
+	struct kmem_cache_cpu *cpu_slab[NR_CPUS];
+#else
+	struct kmem_cache_cpu cpu_slab;
+#endif
 };
 
 /*