Merge tag 'dlm-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm

Pull dlm updates from David Teigland:
 "This set is entirely trivial fixes, mainly around correct cleanup on
  error paths and improved error checks. One patch adds scheduling in a
  potentially long recovery loop"

* tag 'dlm-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
  dlm: fix invalid cluster name warning
  dlm: NULL check before some freeing functions is not needed
  dlm: NULL check before kmem_cache_destroy is not needed
  dlm: fix missing idr_destroy for recover_idr
  dlm: memory leaks on error path in dlm_user_request()
  dlm: lost put_lkb on error path in receive_convert() and receive_unlock()
  dlm: possible memory leak on error path in create_lkb()
  dlm: fixed memory leaks after failed ls_remove_names allocation
  dlm: fix possible call to kfree() for non-initialized pointer
  dlm: Don't swamp the CPU with callbacks queued during recovery
  dlm: don't leak kernel pointer to userspace
  dlm: don't allow zero length names
  dlm: fix invalid free