On Tue, Sep 21, 2021 at 07:36:22PM -0700, Darrick J. Wong wrote:

'still a mess' isn't all that useful for figuring out what still needs
to be done and splitting up the work.  Do you have items beyond my own
list below?

 - still arguing over what exactly FALLOC_FL_ZERO_REINIT_WHATEVER_PONIES
   should be doing
 - no reflink support, encompassing:
 - hwpoison from mmap regions really ought to tell the fs that bad stuff
   happened
 - mm rmap can't handle more than one owner

My main really big item is that we're still mounting through a fake
block device, suporting partitions and all that crap.  We need to sort
out the whole story of how pmem/nvdimm is actually treated, because
what we have right now is not sustainable at all.