On Thu, Jul 22, 2021 at 11:23:38PM +0300, Boris Pismenny wrote:

This routine, like other changes in this file, replicates the logic in
memcpy_to_page. The only difference is that "ddp" avoids copies when the
copy source and destinations buffers are one and the same.

Now why can't we just make that change to the generic routine?

If we can't, why do they not have a saner name documenting what they
actually do?