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Shutemov" To: John Hubbard Cc: Andrew Morton , Al Viro , Christoph Hellwig , Dan Williams , Dave Chinner , Ira Weiny , Jan Kara , Jason Gunthorpe , Jonathan Corbet , =?utf-8?B?SsOpcsO0bWU=?= Glisse , Michal Hocko , Mike Kravetz , Shuah Khan , Vlastimil Babka , Matthew Wilcox , linux-doc@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-rdma@vger.kernel.org, linux-mm@kvack.org, LKML Subject: Re: [PATCH v3 06/12] mm/gup: require FOLL_GET for get_user_pages_fast() Message-ID: <20200203132626.ckkozepykxmqxf6a@box> References: <20200201034029.4063170-1-jhubbard@nvidia.com> <20200201034029.4063170-7-jhubbard@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200201034029.4063170-7-jhubbard@nvidia.com> X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, Jan 31, 2020 at 07:40:23PM -0800, John Hubbard wrote: > Internal to mm/gup.c, require that get_user_pages_fast() > and __get_user_pages_fast() identify themselves, by setting > FOLL_GET. This is required in order to be able to make decisions > based on "FOLL_PIN, or FOLL_GET, or both or neither are set", in > upcoming patches. > > Signed-off-by: John Hubbard Acked-by: Kirill A. Shutemov -- Kirill A. Shutemov