From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Elder Subject: [PATCH 2/3] libceph: let con_work() handle backoff Date: Tue, 09 Oct 2012 14:33:11 -0700 Message-ID: <50749817.7090900@inktank.com> References: <507497AC.5030609@inktank.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-pb0-f46.google.com ([209.85.160.46]:53550 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754075Ab2JIVdN (ORCPT ); Tue, 9 Oct 2012 17:33:13 -0400 Received: by mail-pb0-f46.google.com with SMTP id rr4so5691963pbb.19 for ; Tue, 09 Oct 2012 14:33:13 -0700 (PDT) In-Reply-To: <507497AC.5030609@inktank.com> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: ceph-devel@vger.kernel.org Both ceph_fault() and con_work() include handling for imposing a delay before doing further processing on a faulted connection. The latter is used only if ceph_fault() is unable to. Instead, just let con_work() always be responsible for implementing the delay. After setting up the delay value, set the BACKOFF flag on the connection unconditionally and call queue_con() to ensure con_work() will get called to handle it. Signed-off-by: Alex Elder --- net/ceph/messenger.c | 20 ++------------------ 1 file changed, 2 insertions(+), 18 deletions(-) diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index ece06bc..9170c20 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -2398,24 +2398,8 @@ static void ceph_fault(struct ceph_connection *con) con->delay = BASE_DELAY_INTERVAL; else if (con->delay < MAX_DELAY_INTERVAL) con->delay *= 2; - con->ops->get(con); - if (queue_delayed_work(ceph_msgr_wq, &con->work, - round_jiffies_relative(con->delay))) { - dout("fault queued %p delay %lu\n", con, con->delay); - } else { - con->ops->put(con); - dout("fault failed to queue %p delay %lu, backoff\n", - con, con->delay); - /* - * In many cases we see a socket state change - * while con_work is running and end up - * queuing (non-delayed) work, such that we - * can't backoff with a delay. Set a flag so - * that when con_work restarts we schedule the - * delay then. - */ - set_bit(CON_FLAG_BACKOFF, &con->flags); - } + set_bit(CON_FLAG_BACKOFF, &con->flags); + queue_con(con); } out_unlock: -- 1.7.9.5