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[54.240.9.33]) by mx.google.com with ESMTPS id h20si1077159qtb.135.2019.03.19.11.12.59 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 19 Mar 2019 11:12:59 -0700 (PDT) Received-SPF: pass (google.com: domain of 01000169972802f7-2d72ffed-b3a6-4829-8d50-cd92cda6d267-000000@amazonses.com designates 54.240.9.33 as permitted sender) client-ip=54.240.9.33; Authentication-Results: mx.google.com; dkim=pass header.i=@amazonses.com header.s=6gbrjpgwjskckoa6a5zn6fwqkn67xbtw header.b=A46Bnkdt; spf=pass (google.com: domain of 01000169972802f7-2d72ffed-b3a6-4829-8d50-cd92cda6d267-000000@amazonses.com designates 54.240.9.33 as permitted sender) smtp.mailfrom=01000169972802f7-2d72ffed-b3a6-4829-8d50-cd92cda6d267-000000@amazonses.com DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/simple; s=6gbrjpgwjskckoa6a5zn6fwqkn67xbtw; d=amazonses.com; t=1553019179; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:MIME-Version:Content-Type:Feedback-ID; bh=DxlNuZ7/tO+3WRXUygFzfItTwCwspPcK4riHH/qCBnA=; b=A46Bnkdtdmw1ltMn1xLWyOXdgUOYb46BJPcX5+Lnzpmzl+iw9iK/mKzOHnS8xekb qBAEqY11UPz3FmTGgPlmBnorObUj0CYngAdR9vWBQXlH8VXWmrWwAeWnVOeVTghalEr 9vsI/0OE7Avr1S5KOrpOHx1UWnZ43Cx2VxgtmDxI= Date: Tue, 19 Mar 2019 18:12:59 +0000 From: Christopher Lameter X-X-Sender: cl@nuc-kabylake To: john.hubbard@gmail.com cc: Andrew Morton , linux-mm@kvack.org, Al Viro , Christian Benvenuti , Christoph Hellwig , Dan Williams , Dave Chinner , Dennis Dalessandro , Doug Ledford , Ira Weiny , Jan Kara , Jason Gunthorpe , Jerome Glisse , Matthew Wilcox , Michal Hocko , Mike Rapoport , Mike Marciniszyn , Ralph Campbell , Tom Talpey , LKML , linux-fsdevel@vger.kernel.org, John Hubbard Subject: Re: [PATCH v4 0/1] mm: introduce put_user_page*(), placeholder versions In-Reply-To: <20190308213633.28978-1-jhubbard@nvidia.com> Message-ID: <01000169972802f7-2d72ffed-b3a6-4829-8d50-cd92cda6d267-000000@email.amazonses.com> References: <20190308213633.28978-1-jhubbard@nvidia.com> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-SES-Outgoing: 2019.03.19-54.240.9.33 Feedback-ID: 1.us-east-1.fQZZZ0Xtj2+TD7V5apTT/NrT6QKuPgzCT/IC7XYgDKI=:AmazonSES 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, 8 Mar 2019, john.hubbard@gmail.com wrote: > We seem to have pretty solid consensus on the concept and details of the > put_user_pages() approach. Or at least, if we don't, someone please speak > up now. Christopher Lameter, especially, since you had some concerns > recently. My concerns do not affect this patchset which just marks the get/put for the pagecache. The problem was that the description was making claims that were a bit misleading and seemed to prescribe a solution. So lets get this merged. Whatever the solution will be, we will need this markup.