On Thu, Feb 04, 2021 at 10:34:23AM -0800, Axel Rasmussen wrote:

- Split out adding #ifdef CONFIG_USERFAULTFD to a separate patch (instead of
  lumping it together with adding UFFDIO_CONTINUE). Also, extended it to make
  the same change for shmem as well as suggested by Hugh Dickins.

It seems you didn't extend it to shmem yet. :) But I think it's fine - it can
always be done as a separate patch then when you work on shmem, or even post it
along.  Thanks,

-- 
Peter Xu