From patchwork Mon Nov 26 16:56:48 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: 201852 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 E01142C0085 for ; Tue, 27 Nov 2012 04:10:15 +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 1Td2C4-0001x0-GT; Mon, 26 Nov 2012 17:10:04 +0000 Received: from youngberry.canonical.com ([91.189.89.112]) by chlorine.canonical.com with esmtp (Exim 4.71) (envelope-from ) id 1Td29H-0008T9-FP for kernel-team@lists.ubuntu.com; Mon, 26 Nov 2012 17:07:11 +0000 Received: from 189.58.19.107.dynamic.adsl.gvt.net.br ([189.58.19.107] helo=canonical.com) by youngberry.canonical.com with esmtpsa (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1Td29G-0006hI-Pq; Mon, 26 Nov 2012 17:07:11 +0000 From: Herton Ronaldo Krzesinski To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Subject: [PATCH 118/270] libceph: allow sock transition from CONNECTING to CLOSED Date: Mon, 26 Nov 2012 14:56:48 -0200 Message-Id: <1353949160-26803-119-git-send-email-herton.krzesinski@canonical.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1353949160-26803-1-git-send-email-herton.krzesinski@canonical.com> References: <1353949160-26803-1-git-send-email-herton.krzesinski@canonical.com> Cc: 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 3.5.7u1 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Sage Weil commit fbb85a478f6d4cce6942f1c25c6a68ec5b1e7e7f upstream. It is possible to close a socket that is in the OPENING state. For example, it can happen if ceph_con_close() is called on the con before the TCP connection is established. con_work() will come around and shut down the socket. Signed-off-by: Sage Weil Signed-off-by: Herton Ronaldo Krzesinski --- net/ceph/messenger.c | 25 +++++++++++++------------ 1 file changed, 13 insertions(+), 12 deletions(-) diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index 5adf786..16814d1 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -48,17 +48,17 @@ * | ---------------------- * | \ * + con_sock_state_closed() \ - * |\ \ - * | \ \ - * | ----------- \ - * | | CLOSING | socket event; \ - * | ----------- await close \ - * | ^ | - * | | | - * | + con_sock_state_closing() | - * | / \ | - * | / --------------- | - * | / \ v + * |+--------------------------- \ + * | \ \ \ + * | ----------- \ \ + * | | CLOSING | socket event; \ \ + * | ----------- await close \ \ + * | ^ \ | + * | | \ | + * | + con_sock_state_closing() \ | + * | / \ | | + * | / --------------- | | + * | / \ v v * | / -------------- * | / -----------------| CONNECTING | socket created, TCP * | | / -------------- connect initiated @@ -241,7 +241,8 @@ static void con_sock_state_closed(struct ceph_connection *con) old_state = atomic_xchg(&con->sock_state, CON_SOCK_STATE_CLOSED); if (WARN_ON(old_state != CON_SOCK_STATE_CONNECTED && - old_state != CON_SOCK_STATE_CLOSING)) + old_state != CON_SOCK_STATE_CLOSING && + old_state != CON_SOCK_STATE_CONNECTING)) printk("%s: unexpected old state %d\n", __func__, old_state); }