Index: linux-2.6/include/linux/slub_def.h
===================================================================
--- linux-2.6.orig/include/linux/slub_def.h	2009-10-19 23:49:53.000000000 -0500
+++ linux-2.6/include/linux/slub_def.h	2009-10-19 23:53:29.000000000 -0500
@@ -34,10 +34,12 @@
 	ORDER_FALLBACK,		/* Number of times fallback was necessary */
 	NR_SLUB_STAT_ITEMS };
 
+#define NR_SLUB_PAGES_PER_CPU 6
+
 struct kmem_cache_cpu {
 	void **freelist;	/* Pointer to first free per cpu object */
-	struct page *page;	/* The slab from which we are allocating */
 	int node;		/* The node of the page (or -1 for debug) */
+	struct page *page[NR_SLUB_PAGES_PER_CPU];	/* The slabs from which we are allocating */
 #ifdef CONFIG_SLUB_STATS
 	unsigned stat[NR_SLUB_STAT_ITEMS];
 #endif
Index: linux-2.6/mm/slub.c
===================================================================
--- linux-2.6.orig/mm/slub.c	2009-10-19 23:53:32.000000000 -0500
+++ linux-2.6/mm/slub.c	2009-10-20 00:19:36.000000000 -0500
@@ -1856,8 +1856,17 @@
 	if (!(s->flags & SLAB_DEBUG_OBJECTS))
 		debug_check_no_obj_freed(object, s->objsize);
 
-	if (likely(page == __this_cpu_read(s->cpu_slab->page) &&
-			__this_cpu_read(s->cpu_slab->node) >= 0)) {
+	/* ID slab */
+	for (i = 0; i < NR_SLUB_CPU_PAGES; i++) {
+		struct page *p = __this_cpu_read(s->cpu_slab->page[i]);
+
+		if (!p)
+			break;
+		if (p == page)
+			break;
+	}
+
+	if (likely(p) && __this_cpu_read(s->cpu_slab->node) >= 0) {
 		set_freepointer(s, object, __this_cpu_read(s->cpu_slab->freelist));
 		__this_cpu_write(s->cpu_slab->freelist, object);
 		stat(s, FREE_FASTPATH);