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Date:   Tue, 5 Nov 2019 10:49:36 +0100
From:   Daniel Vetter <daniel@ffwll.ch>
To:     John Hubbard <jhubbard@nvidia.com>
Cc:     Ira Weiny <ira.weiny@intel.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Al Viro <viro@zeniv.linux.org.uk>,
        Alex Williamson <alex.williamson@redhat.com>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= <bjorn.topel@intel.com>,
        Christoph Hellwig <hch@infradead.org>,
        Dan Williams <dan.j.williams@intel.com>,
        Dave Chinner <david@fromorbit.com>,
        David Airlie <airlied@linux.ie>,
        "David S . Miller" <davem@davemloft.net>, Jan Kara <jack@suse.cz>,
        Jason Gunthorpe <jgg@ziepe.ca>, Jens Axboe <axboe@kernel.dk>,
        Jonathan Corbet <corbet@lwn.net>,
        =?iso-8859-1?B?Suly9G1l?= Glisse <jglisse@redhat.com>,
        Magnus Karlsson <magnus.karlsson@intel.com>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Michael Ellerman <mpe@ellerman.id.au>,
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        Mike Kravetz <mike.kravetz@oracle.com>,
        Paul Mackerras <paulus@samba.org>,
        Shuah Khan <shuah@kernel.org>,
        Vlastimil Babka <vbabka@suse.cz>, bpf@vger.kernel.org,
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Subject: Re: [PATCH 09/19] drm/via: set FOLL_PIN via pin_user_pages_fast()
Message-ID: <20191105094936.GZ10326@phenom.ffwll.local>
Mail-Followup-To: John Hubbard <jhubbard@nvidia.com>,
        Ira Weiny <ira.weiny@intel.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Al Viro <viro@zeniv.linux.org.uk>,
        Alex Williamson <alex.williamson@redhat.com>,
        Benjamin Herrenschmidt <benh@kernel.crashing.org>,
        =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= <bjorn.topel@intel.com>,
        Christoph Hellwig <hch@infradead.org>,
        Dan Williams <dan.j.williams@intel.com>,
        Dave Chinner <david@fromorbit.com>, David Airlie <airlied@linux.ie>,
        "David S . Miller" <davem@davemloft.net>, Jan Kara <jack@suse.cz>,
        Jason Gunthorpe <jgg@ziepe.ca>, Jens Axboe <axboe@kernel.dk>,
        Jonathan Corbet <corbet@lwn.net>,
        =?iso-8859-1?B?Suly9G1l?= Glisse <jglisse@redhat.com>,
        Magnus Karlsson <magnus.karlsson@intel.com>,
        Mauro Carvalho Chehab <mchehab@kernel.org>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Michal Hocko <mhocko@suse.com>,
        Mike Kravetz <mike.kravetz@oracle.com>,
        Paul Mackerras <paulus@samba.org>, Shuah Khan <shuah@kernel.org>,
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        linuxppc-dev@lists.ozlabs.org, netdev@vger.kernel.org,
        linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>
References: <20191030224930.3990755-1-jhubbard@nvidia.com>
 <20191030224930.3990755-10-jhubbard@nvidia.com>
 <20191031233628.GI14771@iweiny-DESK2.sc.intel.com>
 <20191104181055.GP10326@phenom.ffwll.local>
 <48d22c77-c313-59ff-4847-bc9a9813b8a7@nvidia.com>
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On Mon, Nov 04, 2019 at 11:20:38AM -0800, John Hubbard wrote:
> On 11/4/19 10:10 AM, Daniel Vetter wrote:
> > On Thu, Oct 31, 2019 at 04:36:28PM -0700, Ira Weiny wrote:
> >> On Wed, Oct 30, 2019 at 03:49:20PM -0700, John Hubbard wrote:
> >>> Convert drm/via to use the new pin_user_pages_fast() call, which sets
> >>> FOLL_PIN. Setting FOLL_PIN is now required for code that requires
> >>> tracking of pinned pages, and therefore for any code that calls
> >>> put_user_page().
> >>>
> >>
> >> Reviewed-by: Ira Weiny <ira.weiny@intel.com>
> > 
> > No one's touching the via driver anymore, so feel free to merge this
> > through whatever tree suits best (aka I'll drop this on the floor and
> > forget about it now).
> > 
> > Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
> > 
> 
> OK, great. Yes, in fact, I'm hoping Andrew can just push the whole series
> in through the mm tree, because that would allow it to be done in one 
> shot, in 5.5

btw is there more? We should have a bunch more userptr stuff in various
drivers, so was really surprised that drm/via is the only thing in your
series.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch