Index: linux-2.6.19-mm1/mm/slub.c
===================================================================
--- linux-2.6.19-mm1.orig/mm/slub.c	2006-12-12 18:27:13.000000000 -0800
+++ linux-2.6.19-mm1/mm/slub.c	2006-12-12 18:27:19.000000000 -0800
@@ -650,6 +650,7 @@
 	void *prior;
 	void **object = (void *)x;
 	unsigned long flags;
+	struct active_slab *a;
 
 	if (!object)
 		return;
@@ -669,8 +670,20 @@
 #endif
 
 	local_irq_save(flags);
+	a = ACTIVE_SLAB(s, smp_processor_id());
+	if (a->page == page) {
+		void **object = x;
+
+		a->nr_free++;
+		object[s->offset] = a->freelist;
+		a->freelist = object;
+		local_irq_restore(flags);
+		return;
+	}
+
 	if (unlikely(PageSlabsingle(page)))
 		goto single_object_slab;
+
 	slab_lock(page);
 
 #ifdef SLAB_DEBUG_KFREE