Don't hold a shared lock whilst waiting for BG ops to completenetfs-1.3.1

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

1 files 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();
 	}
 }