From 1a815ef7d43057296dfdd1e833dfd8c0b8b07fae Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Petr=20S=CC=8Ckoda?= <commits@skodak.org>
Date: Thu, 12 Dec 2013 11:36:36 +0800
Subject: [PATCH] MDL-42973 fix MUC caching issue when fetching available
 updates

---
 lib/classes/update/checker.php | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/classes/update/checker.php b/lib/classes/update/checker.php
index 22776270e30..b6ad40762a8 100644
--- a/lib/classes/update/checker.php
+++ b/lib/classes/update/checker.php
@@ -288,6 +288,12 @@ class checker {
         set_config('recentfetch', time(), 'core_plugin');
         set_config('recentresponse', $response, 'core_plugin');
 
+        if (defined('CACHE_DISABLE_ALL') and CACHE_DISABLE_ALL) {
+            // Very nasty hack to work around cache coherency issues on admin/index.php?cache=0 page,
+            // we definitely need to keep caches in sync when writing into DB at all times!
+            \cache_helper::purge_all(true);
+        }
+
         $this->restore_response(true);
     }