[PATCH RFC 1/3] mm: Add f_ops->populate()

[Matthew Wilcox]

On Sun, Mar 06, 2022 at 07:02:57PM +0200, Jarkko Sakkinen wrote:
> So can I conclude from this that in general having populate available for
> device memory is something horrid, or just the implementation path?

You haven't even attempted to explain what the problem is you're trying
to solve.  You've shown up with some terrible code and said "Hey, is
this a good idea".  No, no, it's not.