linux-kernel - Re: [RFC PATCH 0/2] mm/gup: fix gup_fast with dynamic page table folding

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Date:   Mon, 31 Aug 2020 12:15:53 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Christian Borntraeger <borntraeger@...ibm.com>
Cc:     Gerald Schaefer <gerald.schaefer@...ux.ibm.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-mm <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        linux-s390@...r.kernel.org, Heiko Carstens <hca@...ux.ibm.com>,
        Claudio Imbrenda <imbrenda@...ux.ibm.com>
Subject: Re: [RFC PATCH 0/2] mm/gup: fix gup_fast with dynamic page table
 folding

On Mon, 31 Aug 2020 13:53:36 +0200 Christian Borntraeger <borntraeger@...ibm.com> wrote:

> 
> 
> On 28.08.20 16:03, Gerald Schaefer wrote:
> have some feedback soon if option 1 or option 2 would be acceptable 
> from a common code perspective. Andrew, who of the mm people would 
> be the right one to decide?

Jason and John Hubbard are doing most of the work in there at present,

Both patches look OK to me from a non-s390 perspective.  Unless we plan
to implement Jason's more-general approach this time, I'd be inclined
to defer to the s390 people as to the preferred implementation.