[3.5.yuz,extended,stable] Patch "libceph: don't change socket state on sock event" has been added to staging queue

Message ID 1353431820-8881-1-git-send-email-herton.krzesinski@canonical.com
State New
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Commit Message

Herton Ronaldo Krzesinski Nov. 20, 2012, 5:17 p.m.
This is a note to let you know that I have just added a patch titled

    libceph: don't change socket state on sock event

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


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



From af1a7a044086385fb58e388205ac943a3b2dfe8a Mon Sep 17 00:00:00 2001
From: Alex Elder <elder@inktank.com>
Date: Wed, 20 Jun 2012 21:53:53 -0500
Subject: [PATCH 33/78] libceph: don't change socket state on sock event

commit 188048bce311ee41e5178bc3255415d0eae28423 upstream.

Currently the socket state change event handler records an error
message on a connection to distinguish a close while connecting from
a close while a connection was already established.

Changing connection information during handling of a socket event is
not very clean, so instead move this assignment inside con_work(),
where it can be done during normal connection-level processing (and
under protection of the connection mutex as well).

Move the handling of a socket closed event up to the top of the
processing loop in con_work(); there's no point in handling backoff
etc. if we have a newly-closed socket to take care of.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Sage Weil <sage@inktank.com>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
 net/ceph/messenger.c |   18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)



diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index d0aca62..5bd243e 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -261,13 +261,8 @@  static void ceph_sock_state_change(struct sock *sk)
 		dout("%s TCP_CLOSE_WAIT\n", __func__);
-		if (test_and_set_bit(SOCK_CLOSED, &con->flags) == 0) {
-			if (test_bit(CONNECTING, &con->state))
-				con->error_msg = "connection failed";
-			else
-				con->error_msg = "socket closed";
+		if (!test_and_set_bit(SOCK_CLOSED, &con->flags))
-		}
 		dout("%s TCP_ESTABLISHED\n", __func__);
@@ -2187,6 +2182,14 @@  static void con_work(struct work_struct *work)

+	if (test_and_clear_bit(SOCK_CLOSED, &con->flags)) {
+		if (test_bit(CONNECTING, &con->state))
+			con->error_msg = "connection failed";
+		else
+			con->error_msg = "socket closed";
+		goto fault;
+	}
 	if (test_and_clear_bit(BACKOFF, &con->flags)) {
 		dout("con_work %p backing off\n", con);
 		if (queue_delayed_work(ceph_msgr_wq, &con->work,
@@ -2216,9 +2219,6 @@  restart:

-	if (test_and_clear_bit(SOCK_CLOSED, &con->flags))
-		goto fault;
 	ret = try_read(con);
 	if (ret == -EAGAIN)
 		goto restart;