Re: [PATCH v6 1/2] mm: migration: fix the FOLL_GET failure on following huge page

[Mike Kravetz]

On 08/17/22 10:26, Mike Kravetz wrote:
> On 08/16/22 22:43, Andrew Morton wrote:
> > On Wed, 17 Aug 2022 03:31:37 +0000 "Wang, Haiyue" <haiyue.wang@xxxxxxxxx> wrote:
> > 
> > > > >  		}
> > > > 
> > > > I would be better to fix this for real at those three client code sites?
> > > 
> > > Then 5.19 will break for a while to wait for the final BIG patch ?
> > 
> > If that's the proposal then your [1/2] should have had a cc:stable and
> > changelog words describing the plan for 6.0.
> > 
> > But before we do that I'd like to see at least a prototype of the final
> > fixes to s390 and hugetlb, so we can assess those as preferable for
> > backporting.  I don't think they'll be terribly intrusive or risky?
> 
> I will start on adding follow_huge_pgd() support.  Although, I may need
> some help with verification from the powerpc folks, as that is the only
> architecture which supports hugetlb pages at that level.
> 
> mpe any suggestions?