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Commit 0a2ad541 authored by Yan, Zheng's avatar Yan, Zheng Committed by Ilya Dryomov
Browse files

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: default avatar"Yan, Zheng" <zyan@redhat.com>
Reviewed-by: default avatarIlya Dryomov <idryomov@gmail.com>
Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
parent 293dffaa

net/ceph/messenger.c

+12 −3
Original line number Diff line number Diff line
@@ -2228,10 +2228,18 @@ static void process_ack(struct ceph_connection *con) 
	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 @@ static void process_ack(struct ceph_connection *con) 
		m->ack_stamp = jiffies;

		ceph_msg_remove(m);

	}



	prepare_read_tag(con);

}