diff --git a/fs/hot_tracking.c b/fs/hot_tracking.c
index f333c47..fcde55e 100644
--- a/fs/hot_tracking.c
+++ b/fs/hot_tracking.c
@@ -742,6 +742,59 @@ static inline void hot_cache_exit(void)
 		kmem_cache_destroy(hot_inode_item_cachep);
 }
 
+static int hot_track_comm_prune(struct hot_map_head *map_head,
+				bool type, unsigned long nr)
+{
+	struct list_head *pos, *next;
+	struct hot_comm_item *node;
+	int i;
+
+	for (i = 0; i < HEAT_MAP_SIZE; i++) {
+		list_for_each_safe(pos, next, &(map_head + i)->node_list) {
+			if (nr == 0)
+				break;
+			nr--;
+			node = list_entry(pos, struct hot_comm_item, n_list);
+			if (type) {
+				struct hot_inode_item *hot_inode =
+					container_of(node,
+					struct hot_inode_item, hot_inode);
+				hot_inode_item_put(hot_inode);
+			} else {
+				struct hot_range_item *hot_range =
+					container_of(node,
+					struct hot_range_item, hot_range);
+				hot_range_item_put(hot_range);
+			}
+		}
+
+		if (nr == 0)
+			break;
+	}
+
+	return nr;
+}
+
+/* The shrinker callback function */
+static int hot_track_prune(struct shrinker *shrink,
+			struct shrink_control *sc)
+{
+	struct hot_info *root =
+		container_of(shrink, struct hot_info, hot_shrink);
+	int ret;
+
+	if ((sc->gfp_mask & GFP_KERNEL) != GFP_KERNEL)
+		return (sc->nr_to_scan == 0) ? 0 : -1;
+
+	ret = hot_track_comm_prune(root->heat_range_map,
+				false, sc->nr_to_scan);
+	if (ret > 0)
+		ret = hot_track_comm_prune(root->heat_inode_map,
+					true, ret);
+
+	return ret;
+}
+
 /*
  * Initialize the data structures for hot data tracking.
  */
@@ -774,6 +827,11 @@ void hot_track_init(struct super_block *sb)
 	if (err)
 		goto failed_wq;
 
+	/* Register a shrinker callback */
+	root->hot_shrink.shrink = hot_track_prune;
+	root->hot_shrink.seeks = DEFAULT_SEEKS;
+	register_shrinker(&root->hot_shrink);
+
 	printk(KERN_INFO "vfs: turning on hot data tracking\n");
 
 	return;
@@ -791,6 +849,7 @@ void hot_track_exit(struct super_block *sb)
 {
 	struct hot_info *root = global_hot_tracking_info;
 
+	unregister_shrinker(&root->hot_shrink);
 	hot_wq_exit(root->update_wq);
 	hot_map_array_exit(root);
 	hot_inode_tree_exit(root);
diff --git a/include/linux/hot_tracking.h b/include/linux/hot_tracking.h
index b37e0f8..6f31090 100644
--- a/include/linux/hot_tracking.h
+++ b/include/linux/hot_tracking.h
@@ -86,6 +86,7 @@ struct hot_info {
 	struct hot_map_head heat_range_map[HEAT_MAP_SIZE];
 
 	struct workqueue_struct *update_wq;
+	struct shrinker hot_shrink;
 };
 
 extern struct hot_info *global_hot_tracking_info;