From c0d5f9db1c7d1b8a9e2f217706e8ea233bac2754 Mon Sep 17 00:00:00 2001 From: Jim Schutt Date: Fri, 16 Sep 2011 08:27:31 -0600 Subject: [PATCH] libceph: initialize ack_stamp to avoid unnecessary connection reset Commit 4cf9d544631c recorded when an outgoing ceph message was ACKed, in order to avoid unnecessary connection resets when an OSD is busy. However, ack_stamp is uninitialized, so there is a window between when the message is sent and when it is ACKed in which handle_timeout() interprets the unitialized value as an expired timeout, and resets the connection unnecessarily. Close the window by initializing ack_stamp. Signed-off-by: Jim Schutt Signed-off-by: Sage Weil --- net/ceph/messenger.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index c340e2e0765b..9918e9eb276e 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -2307,6 +2307,7 @@ struct ceph_msg *ceph_msg_new(int type, int front_len, gfp_t flags) m->front_max = front_len; m->front_is_vmalloc = false; m->more_to_follow = false; + m->ack_stamp = 0; m->pool = NULL; /* middle */ -- 2.20.1