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

[Wang, Haiyue]

> -----Original Message-----
> From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Sent: Wednesday, August 17, 2022 13:43
> To: Wang, Haiyue <haiyue.wang@xxxxxxxxx>
> Cc: linux-mm@xxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; david@xxxxxxxxxx; apopple@xxxxxxxxxx;
> linmiaohe@xxxxxxxxxx; Huang, Ying <ying.huang@xxxxxxxxx>; songmuchun@xxxxxxxxxxxxx;
> naoya.horiguchi@xxxxxxxxx; alex.sierra@xxxxxxx; Heiko Carstens <hca@xxxxxxxxxxxxx>; Vasily Gorbik
> <gor@xxxxxxxxxxxxx>; Alexander Gordeev <agordeev@xxxxxxxxxxxxx>; Christian Borntraeger
> <borntraeger@xxxxxxxxxxxxx>; Sven Schnelle <svens@xxxxxxxxxxxxx>; Mike Kravetz
> <mike.kravetz@xxxxxxxxxx>
> Subject: Re: [PATCH v6 1/2] mm: migration: fix the FOLL_GET failure on following huge page
> 
> 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

Got it, make sense. ;-)

> backporting.  I don't think they'll be terribly intrusive or risky?