libceph: register request before unregister linger

In kick_requests(), we need to register the request before we
unregister the linger request.  Otherwise the unregister will
reset the request's osd pointer to NULL.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Sage Weil <sage@inktank.com>
(cherry picked from commit c89ce05e0c5a01a256100ac6a6019f276bdd1ca6)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 2c3951628872b39dc91717a6e15d8209a39c2b62..93845f23d3f7789d3ea84370779319a1037552d9 100644 (file)
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -1364,8 +1364,8 @@ static void kick_requests(struct ceph_osd_client *osdc, int force_resend)
 
                dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid,
                     req->r_osd ? req->r_osd->o_osd : -1);
-               __unregister_linger_request(osdc, req);
                __register_request(osdc, req);
+               __unregister_linger_request(osdc, req);
        }
        mutex_unlock(&osdc->request_mutex);