Index: linux-2.6.21-rc1/mm/slub.c
===================================================================
--- linux-2.6.21-rc1.orig/mm/slub.c	2007-02-26 20:16:29.000000000 -0800
+++ linux-2.6.21-rc1/mm/slub.c	2007-02-26 20:16:47.000000000 -0800
@@ -122,6 +122,7 @@ static struct page *allocate_slab(struct
 	struct page * page;
 	int pages = 1 << s->order;
 
+	printk("allocate_slab(%s, %x,%d) order=%d\n",s->name, (unsigned)flags, node, s->order);
 	if (s->order)
 		flags |= __GFP_COMP;
 
@@ -713,6 +714,9 @@ static __always_inline void *__slab_allo
 	local_irq_save(flags);
 	cpu = smp_processor_id();
 	page = s->cpu_slab[cpu];
+	printk(KERN_CRIT "__slab_alloc(%s,%x,%d) cpu=%d page=%p from %p\n",
+			s->name, (unsigned)gfpflags, node, cpu, page, s->cpu_slab + cpu);
+
 	if (!page)
 		goto new_slab;
 
@@ -743,6 +747,7 @@ redo:
 			dump_stack();
 		}
 	}
+	printk("return object=%p\n", object);
 	return object;
 
 another_slab:
@@ -771,6 +776,8 @@ new_slab:
 	slab_lock(page);
 
 gotpage:
+	printk(KERN_ERR "gotpage: page=%p cpu->page=%p\n",
+		page, s->cpu_slab[cpu]);
 	if (s->cpu_slab[cpu]) {
 		slab_unlock(page);
 		discard_slab(s, page);
@@ -1149,6 +1156,7 @@ int kmem_cache_open(struct kmem_cache *s
 	s->size = size;
 
 	s->order = calculate_order(size);
+	printk(KERN_ERR "%s size=%d order=%d\n", s->name, size, s->order);
 	if (s->order < 0)
 		goto error;