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ceph: avoid resending queued message to monitor 

The auth_reply handler will (re)send any pending requests.  For the
initial mon authenticate phase, that's correct, but when a auth ticket
renewal races with an in-flight request, we may resend a request message
that is already in flight.  Avoid this by revoking the message before
sending it.

We should also avoid resending requests at all during ticket renewal; that
will come soon.

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil 2010-05-21 12:31:49 -07:00
parent 9e32789f63
commit 970690012c
1 changed files with 2 additions and 0 deletions
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2
fs/ceph/mon_client.c
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@ -104,6 +104,7 @@ static void __send_prepared_auth_request(struct ceph_mon_client *monc, int len)
monc->pending_auth = 1;
monc->m_auth->front.iov_len = len;
monc->m_auth->hdr.front_len = cpu_to_le32(len);
ceph_con_revoke(monc->con, monc->m_auth);
ceph_msg_get(monc->m_auth); /* keep our ref */
ceph_con_send(monc->con, monc->m_auth);
}
@ -539,6 +540,7 @@ static void __resend_generic_request(struct ceph_mon_client *monc)
for (p = rb_first(&monc->generic_request_tree); p; p = rb_next(p)) {
req = rb_entry(p, struct ceph_mon_generic_request, node);
ceph_con_revoke(monc->con, req->request);
ceph_con_send(monc->con, ceph_msg_get(req->request));
}
}