[PATCH] libceph: Call con->ops->put(con) if cancel_delayed_work(&con->work) worked.

[majianpeng <majianpeng@gmail.com>]

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Because in func queue_con_delay, it will call con->ops->get(con).
So if we cancel the work successfully,we must call con->ops->put(con).
Otherwise some resource can't free like 'struct ceph_mds_session'.

Signed-off-by: Jianpeng Ma <majianpeng@gmail.com>
---
 net/ceph/messenger.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index eb0a46a..8207b37 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -661,7 +661,8 @@ void ceph_con_close(struct ceph_connection *con)
 
 	reset_connection(con);
 	con->peer_global_seq = 0;
-	cancel_delayed_work(&con->work);
+	if (cancel_delayed_work(&con->work))
+		con->ops->put(con);
 	con_close_socket(con);
 	mutex_unlock(&con->mutex);
 }
-- 
1.8.1.2
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