From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A4463C432C3 for ; Wed, 13 Nov 2019 18:59:10 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id C61E9206CB for ; Wed, 13 Nov 2019 18:59:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C61E9206CB Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id C39DE6B0006; Wed, 13 Nov 2019 13:59:09 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id BE9746B0008; Wed, 13 Nov 2019 13:59:09 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id B00306B000A; Wed, 13 Nov 2019 13:59:09 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0167.hostedemail.com [216.40.44.167]) by kanga.kvack.org (Postfix) with ESMTP id 9E8346B0006 for ; Wed, 13 Nov 2019 13:59:09 -0500 (EST) Received: from smtpin02.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with SMTP id 3EE1352A7 for ; Wed, 13 Nov 2019 18:59:09 +0000 (UTC) X-FDA: 76152166818.02.steam41_4fcfb037b6154 X-HE-Tag: steam41_4fcfb037b6154 X-Filterd-Recvd-Size: 3293 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by imf40.hostedemail.com (Postfix) with ESMTP for ; Wed, 13 Nov 2019 18:59:08 +0000 (UTC) X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 13 Nov 2019 10:59:03 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,301,1569308400"; d="scan'208";a="406064294" Received: from iweiny-desk2.sc.intel.com ([10.3.52.157]) by fmsmga006.fm.intel.com with ESMTP; 13 Nov 2019 10:59:02 -0800 Date: Wed, 13 Nov 2019 10:59:02 -0800 From: Ira Weiny To: John Hubbard Cc: Andrew Morton , Al Viro , Alex Williamson , Benjamin Herrenschmidt , =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= , Christoph Hellwig , Dan Williams , Daniel Vetter , Dave Chinner , David Airlie , "David S . Miller" , Jan Kara , Jason Gunthorpe , Jens Axboe , Jonathan Corbet , =?iso-8859-1?B?Suly9G1l?= Glisse , Magnus Karlsson , Mauro Carvalho Chehab , Michael Ellerman , Michal Hocko , Mike Kravetz , Paul Mackerras , Shuah Khan , Vlastimil Babka , bpf@vger.kernel.org, dri-devel@lists.freedesktop.org, kvm@vger.kernel.org, linux-block@vger.kernel.org, linux-doc@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-media@vger.kernel.org, linux-rdma@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, netdev@vger.kernel.org, linux-mm@kvack.org, LKML , Mike Rapoport Subject: Re: [PATCH v4 09/23] mm/gup: introduce pin_user_pages*() and FOLL_PIN Message-ID: <20191113185902.GB12915@iweiny-DESK2.sc.intel.com> References: <20191113042710.3997854-1-jhubbard@nvidia.com> <20191113042710.3997854-10-jhubbard@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191113042710.3997854-10-jhubbard@nvidia.com> User-Agent: Mutt/1.11.1 (2018-12-01) 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 Tue, Nov 12, 2019 at 08:26:56PM -0800, John Hubbard wrote: > Introduce pin_user_pages*() variations of get_user_pages*() calls, > and also pin_longterm_pages*() variations. > > These variants all set FOLL_PIN, which is also introduced, and > thoroughly documented. > > The pin_longterm*() variants also set FOLL_LONGTERM, in addition > to FOLL_PIN: > > pin_user_pages() > pin_user_pages_remote() > pin_user_pages_fast() > > pin_longterm_pages() > pin_longterm_pages_remote() > pin_longterm_pages_fast() At some point in this conversation I thought we were going to put in "unpin_*" versions of these. Is that still in the plans? Ira