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From:   Linus Torvalds <torvalds@linux-foundation.org>
Date:   Sat, 26 Sep 2020 15:28:32 -0700
Message-ID: <CAHk-=wi_gd+JWj-8t8tc8cy3WZ7NMj-_1hATfH3Rt0ytUxtMpQ@mail.gmail.com>
Subject: Re: [PATCH 1/5] mm: Introduce mm_struct.has_pinned
To:     Jason Gunthorpe <jgg@ziepe.ca>
Cc:     Peter Xu <peterx@redhat.com>, John Hubbard <jhubbard@nvidia.com>,
        Linux-MM <linux-mm@kvack.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Jan Kara <jack@suse.cz>, Michal Hocko <mhocko@suse.com>,
        Kirill Tkhai <ktkhai@virtuozzo.com>,
        Kirill Shutemov <kirill@shutemov.name>,
        Hugh Dickins <hughd@google.com>,
        Christoph Hellwig <hch@lst.de>,
        Andrea Arcangeli <aarcange@redhat.com>,
        Oleg Nesterov <oleg@redhat.com>,
        Leon Romanovsky <leonro@nvidia.com>,
        Jann Horn <jannh@google.com>
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On Fri, Sep 25, 2020 at 6:15 PM Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> I think that over the weekend I'll do Peter's version but with the
> "page_mapcount() == 1"  check, because I'm starting to like that
> better than the mm->has_pinned.

Actually, rafter the first read-through, I feel like I'll just apply
the series as-is.

But I'll look at it some more, and do another read-through and make
the final decision tomorrow.

If anybody has any concerns about the v2 patch series from Peter, holler.

              Linus