[ 3.5.yuz extended stable ] Patch "libceph: reset connection retry on successfully" has been added to staging queue

[Herton Ronaldo Krzesinski]

This is a note to let you know that I have just added a patch titled

    libceph: reset connection retry on successfully

to the linux-3.5.y-queue branch of the 3.5.yuz extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.yuz tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Herton

------

>From b8e83dd39db9311d5e939a95875777832d45a8a6 Mon Sep 17 00:00:00 2001
From: Sage Weil <sage at inktank.com>
Date: Mon, 30 Jul 2012 16:22:05 -0700
Subject: [PATCH 53/78] libceph: reset connection retry on successfully
 negotiation

commit 85effe183dd45854d1ad1a370b88cddb403c4c91 upstream.

We exponentially back off when we encounter connection errors.  If several
errors accumulate, we will eventually wait ages before even trying to
reconnect.

Fix this by resetting the backoff counter after a successful negotiation/
connection with the remote node.  Fixes ceph issue #2802.

Signed-off-by: Sage Weil <sage at inktank.com>
Reviewed-by: Yehuda Sadeh <yehuda at inktank.com>
Reviewed-by: Alex Elder <elder at inktank.com>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski at canonical.com>
---
 net/ceph/messenger.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index a477998..07204f1 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -1629,6 +1629,8 @@ static int process_connect(struct ceph_connection *con)
 		if (con->in_reply.flags & CEPH_MSG_CONNECT_LOSSY)
 			set_bit(LOSSYTX, &con->flags);

+		con->delay = 0;      /* reset backoff memory */
+
 		prepare_read_tag(con);
 		break;

--
1.7.9.5