[ 3.5.yuz extended stable ] Patch "libceph: clear NEGOTIATING when done" 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: clear NEGOTIATING when done

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 99b3f60a8bbbada2597dd983a068635042b28b4f Mon Sep 17 00:00:00 2001
From: Alex Elder <elder at inktank.com>
Date: Wed, 23 May 2012 14:35:23 -0500
Subject: [PATCH 37/78] libceph: clear NEGOTIATING when done

commit 3ec50d1868a9e0493046400bb1fdd054c7f64ebd upstream.

A connection state's NEGOTIATING bit gets set while in CONNECTING
state after we have successfully exchanged a ceph banner and IP
addresses with the connection's peer (the server).  But that bit
is not cleared again--at least not until another connection attempt
is initiated.

Instead, clear it as soon as the connection is fully established.
Also, clear it when a socket connection gets prematurely closed
in the midst of establishing a ceph connection (in case we had
reached the point where it was set).

Signed-off-by: Alex Elder <elder at inktank.com>
Reviewed-by: Sage Weil <sage at inktank.com>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski at canonical.com>
---
 net/ceph/messenger.c |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index 5e8033f..9e586ea 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -1562,6 +1562,7 @@ static int process_connect(struct ceph_connection *con)
 			fail_protocol(con);
 			return -1;
 		}
+		clear_bit(NEGOTIATING, &con->state);
 		clear_bit(CONNECTING, &con->state);
 		con->peer_global_seq = le32_to_cpu(con->in_reply.global_seq);
 		con->connect_seq++;
@@ -1951,7 +1952,6 @@ more:

 	/* open the socket first? */
 	if (con->sock == NULL) {
-		clear_bit(NEGOTIATING, &con->state);
 		set_bit(CONNECTING, &con->state);

 		con_out_kvec_reset(con);
@@ -2190,10 +2190,12 @@ static void con_work(struct work_struct *work)
 	mutex_lock(&con->mutex);
 restart:
 	if (test_and_clear_bit(SOCK_CLOSED, &con->flags)) {
-		if (test_and_clear_bit(CONNECTING, &con->state))
+		if (test_and_clear_bit(CONNECTING, &con->state)) {
+			clear_bit(NEGOTIATING, &con->state);
 			con->error_msg = "connection failed";
-		else
+		} else {
 			con->error_msg = "socket closed";
+		}
 		goto fault;
 	}

--
1.7.9.5