libceph: cleanup old messages according to reconnect seq
when reopen a connection, use 'reconnect seq' to clean up
messages that have already been received by peer.
Link: http://tracker.ceph.com/issues/18690
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index d7ab481..588a919 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -2228,10 +2228,18 @@
struct ceph_msg *m;
u64 ack = le64_to_cpu(con->in_temp_ack);
u64 seq;
+ bool reconnect = (con->in_tag == CEPH_MSGR_TAG_SEQ);
+ struct list_head *list = reconnect ? &con->out_queue : &con->out_sent;
- while (!list_empty(&con->out_sent)) {
- m = list_first_entry(&con->out_sent, struct ceph_msg,
- list_head);
+ /*
+ * In the reconnect case, con_fault() has requeued messages
+ * in out_sent. We should cleanup old messages according to
+ * the reconnect seq.
+ */
+ while (!list_empty(list)) {
+ m = list_first_entry(list, struct ceph_msg, list_head);
+ if (reconnect && m->needs_out_seq)
+ break;
seq = le64_to_cpu(m->hdr.seq);
if (seq > ack)
break;
@@ -2240,6 +2248,7 @@
m->ack_stamp = jiffies;
ceph_msg_remove(m);
}
+
prepare_read_tag(con);
}