From 4052ec532b7f963ef738f8c5fb0b32759571e8f5 Mon Sep 17 00:00:00 2001
From: Tulir Asokan <tulir@maunium.net>
Date: Wed, 6 May 2020 18:43:35 +0300
Subject: Fix potential double locking when finding shared rooms

---
 matrix/rooms/roomcache.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/matrix/rooms/roomcache.go b/matrix/rooms/roomcache.go
index d66078c..067cbb6 100644
--- a/matrix/rooms/roomcache.go
+++ b/matrix/rooms/roomcache.go
@@ -74,6 +74,8 @@ func (cache *RoomCache) IsEncrypted(roomID id.RoomID) bool {
 }
 
 func (cache *RoomCache) FindSharedRooms(userID id.UserID) (shared []id.RoomID) {
+	// FIXME this disables unloading so TouchNode wouldn't try to double-lock
+	cache.DisableUnloading()
 	cache.Lock()
 	for _, room := range cache.Map {
 		if !room.Encrypted {
@@ -85,6 +87,7 @@ func (cache *RoomCache) FindSharedRooms(userID id.UserID) (shared []id.RoomID) {
 		}
 	}
 	cache.Unlock()
+	cache.EnableUnloading()
 	return
 }
 
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