Index: linux-2.6.17/mm/slab.c
===================================================================
--- linux-2.6.17.orig/mm/slab.c	2006-06-19 19:26:28.003033097 -0700
+++ linux-2.6.17/mm/slab.c	2006-06-19 19:27:22.297530668 -0700
@@ -3829,12 +3829,12 @@ static int try_reclaim_one(kmem_cache_t 
 	}
 
 
-	if (max_refcnt > 0)
+	if (max_refcnt > 0 && slabp->inuse > 1)
 		/* Cannot free the block */
 		return 0;
-
 	/*
 	 * The slab only contains objects with refcnt 1 (=unused)
+	 * or is a slab with a single object with a high refcount
 	 * this means that we can free the slab object completely
 	 * if we free all the objects.
 	 */
@@ -3842,7 +3842,7 @@ static int try_reclaim_one(kmem_cache_t 
 		atomic_t *objp = index_to_obj(cachep, slabp, i);
 		int refcnt = atomic_read(objp);
 
-		if (!refcnt)
+		if (refcnt >= 0)
 			cachep->dtor(objp, cachep, SLAB_DTOR_FREE);
 	}
 	return 1;