Merge tag 'ceph-for-4.8-rc6' of git://github.com/ceph/ceph-client

Pull ceph fix from Ilya Dryomov:
 "A fix for a 4.7 performance regression, caused by a typo in an if
  condition"

* tag 'ceph-for-4.8-rc6' of git://github.com/ceph/ceph-client:
  ceph: do not modify fi->frag in need_reset_readdir()