osd/OpRequest: reset connection upon unregister

this helps to free the resources referenced by the connection, among
other things, in the case of MOSDOp, the OSD::Session and OSDMap. this
helps to free the resource earlier and trim the osdmaps in time.

Fixes: http://tracker.ceph.com/issues/13990
Signed-off-by: Kefu Chai <kchai@redhat.com>
(cherry picked from commit 87850e96ea6fa45a8368bacabee50f9e95b40ae9)

diff --git a/src/osd/OpRequest.cc b/src/osd/OpRequest.cc
index 8805d1a62f0e5be59927b41c5d8f817fa3308776..9bad447b69fba3239384ac772fc1b00f063318cf 100644 (file)
--- a/src/osd/OpRequest.cc
+++ b/src/osd/OpRequest.cc
@@ -82,6 +82,7 @@ void OpRequest::_unregistered() {
   request->clear_data();
   request->clear_payload();
   request->release_message_throttle();
+  request->set_connection(nullptr);
 }
 
 bool OpRequest::check_rmw(int flag) {