mds/Beacon: wake up the thread in shutdown()

This eliminates the `wait_for()` delay and speeds up MDS shutdown.

Fixes: https://tracker.ceph.com/issues/68759
Signed-off-by: Max Kellermann <max.kellermann@ionos.com>
(cherry picked from commit 0276ab4eb9dd09b0bd8e39389a75e960390ceaeb)

diff --git a/src/mds/Beacon.cc b/src/mds/Beacon.cc
index 7338b11d005e07dbd4d6530eb48a81be7cf50a0e..a6c8cef244ecddc467dd4bb3face47963d691865 100644 (file)
--- a/src/mds/Beacon.cc
+++ b/src/mds/Beacon.cc
@@ -60,6 +60,7 @@ void Beacon::shutdown()
   std::unique_lock<std::mutex> lock(mutex);
   if (!finished) {
     finished = true;
+    cvar.notify_all();
     lock.unlock();
     if (sender.joinable())
       sender.join();