libceph: drop connection refcounting for mon_client

(cherry picked from commit ec87ef4309d33bd9c87a53bb5152a86ae7a65f25)

All references to the embedded ceph_connection come from the msgr
workqueue, which is drained prior to mon_client destruction.  That
means we can ignore con refcounting entirely.

Signed-off-by: Sage Weil <sage@newdream.net>
Reviewed-by: Alex Elder <elder@inktank.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/ceph/mon_client.c b/net/ceph/mon_client.c
index 5cdd8f6d38dafd7a2e143c2965d5dc0efa5e3853..bbb2c660fd60b37542916d02940330c64d067619 100644 (file)
--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -1037,9 +1037,23 @@ out:
        mutex_unlock(&monc->mutex);
 }
 
+/*
+ * We can ignore refcounting on the connection struct, as all references
+ * will come from the messenger workqueue, which is drained prior to
+ * mon_client destruction.
+ */
+static struct ceph_connection *con_get(struct ceph_connection *con)
+{
+       return con;
+}
+
+static void con_put(struct ceph_connection *con)
+{
+}
+
 static const struct ceph_connection_operations mon_con_ops = {
-       .get = ceph_con_get,
-       .put = ceph_con_put,
+       .get = con_get,
+       .put = con_put,
        .dispatch = dispatch,
        .fault = mon_fault,
        .alloc_msg = mon_alloc_msg,