From 8af631a6456bc683f09f9d0e321e8bdb1cd4e093 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Mon, 7 Jan 2019 19:40:15 +0000
Subject: Don't hold a shared lock whilst waiting for BG ops to complete

Just hold the lock whilst the BG op list is copied... then just wait on
the operations which were in-progress at the time of copy
---
 netfs/fuse/fuseFiles.cpp | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/netfs/fuse/fuseFiles.cpp b/netfs/fuse/fuseFiles.cpp
index e56ce0b..b8eb014 100644
--- a/netfs/fuse/fuseFiles.cpp
+++ b/netfs/fuse/fuseFiles.cpp
@@ -28,8 +28,11 @@ FuseApp::getMap<FuseApp::OpenFilePtr>()
 void
 FuseApp::OpenFile::wait() const
 {
-	SharedLock(_lock);
-	for (const auto & w : bg) {
+	auto cbg = [this](){
+		SharedLock(_lock);
+		return bg;
+	}();
+	for (const auto & w : cbg) {
 		w.second->future.wait();
 	}
 }
-- 
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