ceph: drop messages on unregistered mds sessions; cleanup

Verify the mds session is currently registered before handling
incoming messages.  Clean up message handlers to pull mds out
of session->s_mds instead of less trustworthy src field.

Clean up con_{get,put} debug output.

Signed-off-by: Sage Weil <sage@newdream.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 384f0e2e7c68..ff7aaa32736c 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -707,6 +707,7 @@ extern void ceph_put_snap_realm(struct ceph_mds_client *mdsc,
 extern int ceph_update_snap_trace(struct ceph_mds_client *m,
                                   void *p, void *e, bool deletion);
 extern void ceph_handle_snap(struct ceph_mds_client *mdsc,
+                             struct ceph_mds_session *session,
                              struct ceph_msg *msg);
 extern void ceph_queue_cap_snap(struct ceph_inode_info *ci,
                                 struct ceph_snap_context *snapc);