From c430111d0e6efb6a0f929cc3e10f1ce4f32d2c18 Mon Sep 17 00:00:00 2001
From: Erik Johnston <erik@matrix.org>
Date: Wed, 18 Jan 2017 14:55:23 +0000
Subject: [PATCH] Update LruCache size estimate on clear

---
 synapse/util/caches/lrucache.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/synapse/util/caches/lrucache.py b/synapse/util/caches/lrucache.py
index 072f9a9d19..cf5fbb679c 100644
--- a/synapse/util/caches/lrucache.py
+++ b/synapse/util/caches/lrucache.py
@@ -189,6 +189,8 @@ class LruCache(object):
                 for cb in node.callbacks:
                     cb()
             cache.clear()
+            if size_callback:
+                cached_cache_len[0] = 0
 
         @synchronized
         def cache_contains(key):