ceph: unify dentry_operations instances

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index a29ffce..0617580 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -877,6 +877,7 @@
 	fsc->sb = s;
 
 	s->s_op = &ceph_super_ops;
+	s->s_d_op = &ceph_dentry_ops;
 	s->s_export_op = &ceph_export_ops;
 
 	s->s_time_gran = 1000;  /* 1000 ns == 1 us */