From: John Spray <john.spray@redhat.com>
Date: Mon, 6 Mar 2017 11:24:50 +0000 (+0000)
Subject: mds: heartbeat_reset in dispatch
X-Git-Tag: v12.0.1~73^2~1
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=819394549af10532419d88742fae3a69d2ea487d;p=ceph.git

mds: heartbeat_reset in dispatch

Previously we only heartbeated in tick.  However, our locking is
not guaranteed to be fair, so on a super-busy dispatch queue it may be
possible for the heartbeat to time out while the tick() function
is waiting for mds_lock.

Fixes: http://tracker.ceph.com/issues/19118
Signed-off-by: John Spray <john.spray@redhat.com>
---

diff --git a/src/mds/MDSRank.cc b/src/mds/MDSRank.cc
index 58a196985eb0..fce431d332da 100644
--- a/src/mds/MDSRank.cc
+++ b/src/mds/MDSRank.cc
@@ -439,6 +439,8 @@ bool MDSRank::_dispatch(Message *m, bool new_msg)
       dout(0) << "unrecognized message " << *m << dendl;
       return false;
     }
+
+    heartbeat_reset();
   }
 
   if (dispatch_depth > 1)