From 0e686dd0f381257a6b280c7d6bf4404d56ed1dde Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Markus=20M=C3=A4kel=C3=A4?= <markus.makela@mariadb.com>
Date: Mon, 21 May 2018 13:25:17 +0300
Subject: [PATCH] MXS-1878: Immediately process hangups

When DCBs are being hung in dcb_hangup_foreach, the hangup event can be
processed directly. This prevents excessive use of the worker message
queue pipe thus reducing the possibility of it being full.
---
 server/core/dcb.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/server/core/dcb.cc b/server/core/dcb.cc
index ed240c088..89b4d295e 100644
--- a/server/core/dcb.cc
+++ b/server/core/dcb.cc
@@ -2005,7 +2005,8 @@ static void dcb_hangup_foreach_worker(int thread_id, struct server* server)
         if (dcb->state == DCB_STATE_POLLING && dcb->server &&
             dcb->server == server)
         {
-            poll_fake_hangup_event(dcb);
+            dcb->flags |= DCBF_HUNG;
+            dcb->func.hangup(dcb);
         }
     }
 }