From patchwork Tue Nov 20 17:17:00 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Herton Ronaldo Krzesinski X-Patchwork-Id: 200440 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from chlorine.canonical.com (chlorine.canonical.com [91.189.94.204]) by ozlabs.org (Postfix) with ESMTP id E68F12C008E for ; Wed, 21 Nov 2012 04:17:40 +1100 (EST) Received: from localhost ([127.0.0.1] helo=chlorine.canonical.com) by chlorine.canonical.com with esmtp (Exim 4.71) (envelope-from ) id 1TarS0-0002EG-Dx; Tue, 20 Nov 2012 17:17:32 +0000 Received: from youngberry.canonical.com ([91.189.89.112]) by chlorine.canonical.com with esmtp (Exim 4.71) (envelope-from ) id 1TarRY-0001tV-NT for kernel-team@lists.ubuntu.com; Tue, 20 Nov 2012 17:17:05 +0000 Received: from [177.132.111.71] (helo=canonical.com) by youngberry.canonical.com with esmtpsa (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1TarRY-0002vM-1P; Tue, 20 Nov 2012 17:17:04 +0000 From: Herton Ronaldo Krzesinski To: Alex Elder Subject: [ 3.5.yuz extended stable ] Patch "libceph: don't change socket state on sock event" has been added to staging queue Date: Tue, 20 Nov 2012 15:17:00 -0200 Message-Id: <1353431820-8881-1-git-send-email-herton.krzesinski@canonical.com> X-Mailer: git-send-email 1.7.9.5 Cc: kernel-team@lists.ubuntu.com, Sage Weil X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.13 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: kernel-team-bounces@lists.ubuntu.com Errors-To: kernel-team-bounces@lists.ubuntu.com 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: 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 af1a7a044086385fb58e388205ac943a3b2dfe8a Mon Sep 17 00:00:00 2001 From: Alex Elder 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 Reviewed-by: Sage Weil Signed-off-by: Herton Ronaldo Krzesinski --- net/ceph/messenger.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-) -- 1.7.9.5 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) case TCP_CLOSE_WAIT: dout("%s TCP_CLOSE_WAIT\n", __func__); con_sock_state_closing(con); - 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)) queue_con(con); - } break; case TCP_ESTABLISHED: dout("%s TCP_ESTABLISHED\n", __func__); @@ -2187,6 +2182,14 @@ static void con_work(struct work_struct *work) mutex_lock(&con->mutex); restart: + 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: con_close_socket(con); } - if (test_and_clear_bit(SOCK_CLOSED, &con->flags)) - goto fault; - ret = try_read(con); if (ret == -EAGAIN) goto restart;