Pull vfs remap_range update from Darrick Wong:

 - Make some minor adjustments to the remap range preparation function
   to skip file updates when the request length is adjusted downwards to
   zero.

* tag 'vfs-6.2-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  fs/remap_range: avoid spurious writeback on zero length request