On Fri, Aug 16, 2019 at 06:13:55PM +0200, Jan Kara wrote:
quoted
For 3 we do not need to take a reference at all :) So just forget about 3
it does not exist. For 3 the reference is the reference the CPU page table
has on the page and that's it. GUP is no longer involve in ODP or anything
like that.
Yes, I understand. But the fact is that GUP calls are currently still there
e.g. in ODP code. If you can make the code work without taking a page
reference at all, I'm only happy :)
We are working on it :)
Jason