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authorJim Schutt <jaschut@sandia.gov>2011-09-16 08:27:31 -0600
committerSage Weil <sage@newdream.net>2011-09-16 09:16:22 -0700
commitc0d5f9db1c7d1b8a9e2f217706e8ea233bac2754 (patch)
tree1962a9bbd284e32a70486b8cc5a0babd2c7dc131 /net/ceph
parentaca420bc51f48b0701963ba3a6234442a0cabebd (diff)
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 <jaschut@sandia.gov> Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'net/ceph')
-rw-r--r--net/ceph/messenger.c1
1 files changed, 1 insertions, 0 deletions
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 */