From f2daa19c8d5a61f032db87f7ae844340549c2351 Mon Sep 17 00:00:00 2001
From: John Spray <john.spray@redhat.com>
Date: Thu, 18 Jun 2015 11:08:05 +0100
Subject: [PATCH] mds: drop MDSIOContext on mds->stopping

`stopping` is true once the MDS has entered suicide().  During
this phase, any MDSIOContexts that are called (e.g. from objecter,
journaler) become no-ops.

Signed-off-by: John Spray <john.spray@redhat.com>
---
 src/mds/MDSContext.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/mds/MDSContext.cc b/src/mds/MDSContext.cc
index 9a9a6f15ba1..59854ff2869 100644
--- a/src/mds/MDSContext.cc
+++ b/src/mds/MDSContext.cc
@@ -52,6 +52,12 @@ void MDSIOContextBase::complete(int r) {
   dout(10) << "MDSIOContextBase::complete: " << typeid(*this).name() << dendl;
   assert(mds != NULL);
   Mutex::Locker l(mds->mds_lock);
+  if (mds->stopping) {
+    dout(4) << "MDSIOContextBase::complete: dropping for stopping "
+            << typeid(*this).name() << dendl;
+    return;
+  }
+
   if (r == -EBLACKLISTED) {
     derr << "MDSIOContextBase: blacklisted!  Restarting..." << dendl;
     mds->respawn();