From 96146ccae552c648f33a19783fad824cf8101790 Mon Sep 17 00:00:00 2001
From: Milind Changire <mchangir@redhat.com>
Date: Tue, 13 Mar 2018 12:03:56 +0530
Subject: [PATCH 185/201] rpcsvc: correct event-thread scaling

Problem:
Auto thread count derived from the number of attachs and detachs
was reset to 1 when server_reconfigure() was called.

Solution:
Avoid auto-thread-count reset to 1.

mainline:
> BUG: 1547888
> Reviewed-on: https://review.gluster.org/19689
> Reviewed-by: Raghavendra G <rgowdapp@redhat.com>
> Signed-off-by: Milind Changire <mchangir@redhat.com>
(cherry picked from commit 0c3d984287d91d3fe1ffeef297252d912c08a410)

Change-Id: Ic00e86adb81ba3c828e354a6ccb638209ae58b3e
BUG: 1554255
Signed-off-by: Milind Changire <mchangir@redhat.com>
Reviewed-on: https://code.engineering.redhat.com/gerrit/132509
Tested-by: RHGS Build Bot <nigelb@redhat.com>
Reviewed-by: Sunil Kumar Heggodu Gopala Acharya <sheggodu@redhat.com>
---
 xlators/protocol/server/src/server.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/xlators/protocol/server/src/server.c b/xlators/protocol/server/src/server.c
index 4627ea0..89fde39 100644
--- a/xlators/protocol/server/src/server.c
+++ b/xlators/protocol/server/src/server.c
@@ -978,10 +978,11 @@ do_rpc:
         }
 
         /*
-         * Let the event subsystem know that we're auto-scaling, with an
-         * initial count of one.
+         * Update:
+         * We don't need to reset auto_thread_count since it has been derived
+         * out of the total bricks attached. We can reconfigure event threads
+         * but not auto threads.
          */
-        ((struct event_pool *)(this->ctx->event_pool))->auto_thread_count = 1;
 
         GF_OPTION_RECONF ("event-threads", new_nthread, options, int32, out);
         ret = server_check_event_threads (this, conf, new_nthread);
-- 
1.8.3.1