From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kara Subject: Re: [PATCH v5 10/24] mm/gup: introduce pin_user_pages*() and FOLL_PIN Date: Mon, 18 Nov 2019 11:16:01 +0100 Message-ID: <20191118101601.GF17319@quack2.suse.cz> References: <20191115055340.1825745-1-jhubbard@nvidia.com> <20191115055340.1825745-11-jhubbard@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mx1.suse.de (mx2.suse.de [195.135.220.15]) by gabe.freedesktop.org (Postfix) with ESMTPS id 313B06E4AA for ; Mon, 18 Nov 2019 12:01:23 +0000 (UTC) Content-Disposition: inline In-Reply-To: <20191115055340.1825745-11-jhubbard@nvidia.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: John Hubbard Cc: Michal Hocko , Jan Kara , kvm@vger.kernel.org, linux-doc@vger.kernel.org, David Airlie , Dave Chinner , dri-devel@lists.freedesktop.org, LKML , linux-mm@kvack.org, Paul Mackerras , linux-kselftest@vger.kernel.org, Ira Weiny , Jonathan Corbet , linux-rdma@vger.kernel.org, Michael Ellerman , Mike Rapoport , Christoph Hellwig , Jason Gunthorpe , Vlastimil Babka , =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= , linux-media@vger.kernel.org, Shuah Khan , linux-block@vger.kernel.org, =?iso-8859-1?B?Suly9G1l?= Glisse , Al Viro , Dan Williams List-Id: dri-devel@lists.freedesktop.org T24gVGh1IDE0LTExLTE5IDIxOjUzOjI2LCBKb2huIEh1YmJhcmQgd3JvdGU6Cj4gIC8qCj4gLSAq IE5PVEUgb24gRk9MTF9MT05HVEVSTToKPiArICogRk9MTF9QSU4gYW5kIEZPTExfTE9OR1RFUk0g bWF5IGJlIHVzZWQgaW4gdmFyaW91cyBjb21iaW5hdGlvbnMgd2l0aCBlYWNoCj4gKyAqIG90aGVy LiBIZXJlIGlzIHdoYXQgdGhleSBtZWFuLCBhbmQgaG93IHRvIHVzZSB0aGVtOgo+ICAgKgo+ICAg KiBGT0xMX0xPTkdURVJNIGluZGljYXRlcyB0aGF0IHRoZSBwYWdlIHdpbGwgYmUgaGVsZCBmb3Ig YW4gaW5kZWZpbml0ZSB0aW1lCj4gLSAqIHBlcmlvZCBfb2Z0ZW5fIHVuZGVyIHVzZXJzcGFjZSBj b250cm9sLiAgVGhpcyBpcyBjb250cmFzdGVkIHdpdGgKPiAtICogaW92X2l0ZXJfZ2V0X3BhZ2Vz KCkgd2hlcmUgdXNhZ2VzIHdoaWNoIGFyZSB0cmFuc2llbnQuCj4gKyAqIHBlcmlvZCBfb2Z0ZW5f IHVuZGVyIHVzZXJzcGFjZSBjb250cm9sLiAgVGhpcyBpcyBpbiBjb250cmFzdCB0bwo+ICsgKiBp b3ZfaXRlcl9nZXRfcGFnZXMoKSwgd2hlcmUgdXNhZ2VzIHdoaWNoIGFyZSB0cmFuc2llbnQuCiAg ICAgICAgICAgICAgICAgICAgICAgICAgXl5eIHdoZW4geW91IHRvdWNoIHRoaXMsIHBsZWFzZSBm aXggYWxzbyB0aGUKc2Vjb25kIHNlbnRlbnNlLiBJdCBkb2Vzbid0IHF1aXRlIG1ha2Ugc2Vuc2Ug dG8gbWUuLi4gSSdkIHByb2JhYmx5IHdyaXRlCnRoZXJlICJ3aG9zZSB1c2FnZXMgYXJlIHRyYW5z aWVudCIgYnV0IG1heWJlIHlvdSBjYW4gY29tZSB1cCB3aXRoIHNvbWV0aGluZwpldmVuIGJldHRl ci4KCk90aGVyd2lzZSB0aGUgcGF0Y2ggbG9va3MgZ29vZCB0byBtZSBzbyBmZWVsIGZyZWUgdG8g YWRkOgoKUmV2aWV3ZWQtYnk6IEphbiBLYXJhIDxqYWNrQHN1c2UuY3o+CgoJCQkJCQkJCUhvbnph Ci0tIApKYW4gS2FyYSA8amFja0BzdXNlLmNvbT4KU1VTRSBMYWJzLCBDUgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpkcmktZGV2ZWwgbWFpbGluZyBsaXN0 CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3Rv cC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWw= 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 C517BC432C0 for ; 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Mon, 18 Nov 2019 12:01:20 +0000 (UTC) Received: by quack2.suse.cz (Postfix, from userid 1000) id BE4051E4B05; Mon, 18 Nov 2019 11:16:01 +0100 (CET) Date: Mon, 18 Nov 2019 11:16:01 +0100 From: Jan Kara To: John Hubbard Subject: Re: [PATCH v5 10/24] mm/gup: introduce pin_user_pages*() and FOLL_PIN Message-ID: <20191118101601.GF17319@quack2.suse.cz> References: <20191115055340.1825745-1-jhubbard@nvidia.com> <20191115055340.1825745-11-jhubbard@nvidia.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20191115055340.1825745-11-jhubbard@nvidia.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Michal Hocko , Jan Kara , kvm@vger.kernel.org, linux-doc@vger.kernel.org, David Airlie , Dave Chinner , dri-devel@lists.freedesktop.org, LKML , linux-mm@kvack.org, Paul Mackerras , linux-kselftest@vger.kernel.org, Ira Weiny , Jonathan Corbet , linux-rdma@vger.kernel.org, Michael Ellerman , Mike Rapoport , Christoph Hellwig , Jason Gunthorpe , Vlastimil Babka , =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= , linux-media@vger.kernel.org, Shuah Khan , linux-block@vger.kernel.org, =?iso-8859-1?B?Suly9G1l?= Glisse , Al Viro , Dan Williams , Mauro Carvalho Chehab , bpf@vger.kernel.org, Magnus Karlsson , Jens Axboe , netdev@vger.kernel.org, Alex Williamson , linux-fsdevel@vger.kernel.org, Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S . Miller" , Mike Kravetz Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Message-ID: <20191118101601.TRG2PpYDpks8qVwrjBrASpFMDOhvPX-SMX7AOqQENXo@z> T24gVGh1IDE0LTExLTE5IDIxOjUzOjI2LCBKb2huIEh1YmJhcmQgd3JvdGU6Cj4gIC8qCj4gLSAq IE5PVEUgb24gRk9MTF9MT05HVEVSTToKPiArICogRk9MTF9QSU4gYW5kIEZPTExfTE9OR1RFUk0g bWF5IGJlIHVzZWQgaW4gdmFyaW91cyBjb21iaW5hdGlvbnMgd2l0aCBlYWNoCj4gKyAqIG90aGVy LiBIZXJlIGlzIHdoYXQgdGhleSBtZWFuLCBhbmQgaG93IHRvIHVzZSB0aGVtOgo+ICAgKgo+ICAg KiBGT0xMX0xPTkdURVJNIGluZGljYXRlcyB0aGF0IHRoZSBwYWdlIHdpbGwgYmUgaGVsZCBmb3Ig YW4gaW5kZWZpbml0ZSB0aW1lCj4gLSAqIHBlcmlvZCBfb2Z0ZW5fIHVuZGVyIHVzZXJzcGFjZSBj b250cm9sLiAgVGhpcyBpcyBjb250cmFzdGVkIHdpdGgKPiAtICogaW92X2l0ZXJfZ2V0X3BhZ2Vz KCkgd2hlcmUgdXNhZ2VzIHdoaWNoIGFyZSB0cmFuc2llbnQuCj4gKyAqIHBlcmlvZCBfb2Z0ZW5f IHVuZGVyIHVzZXJzcGFjZSBjb250cm9sLiAgVGhpcyBpcyBpbiBjb250cmFzdCB0bwo+ICsgKiBp b3ZfaXRlcl9nZXRfcGFnZXMoKSwgd2hlcmUgdXNhZ2VzIHdoaWNoIGFyZSB0cmFuc2llbnQuCiAg ICAgICAgICAgICAgICAgICAgICAgICAgXl5eIHdoZW4geW91IHRvdWNoIHRoaXMsIHBsZWFzZSBm aXggYWxzbyB0aGUKc2Vjb25kIHNlbnRlbnNlLiBJdCBkb2Vzbid0IHF1aXRlIG1ha2Ugc2Vuc2Ug dG8gbWUuLi4gSSdkIHByb2JhYmx5IHdyaXRlCnRoZXJlICJ3aG9zZSB1c2FnZXMgYXJlIHRyYW5z aWVudCIgYnV0IG1heWJlIHlvdSBjYW4gY29tZSB1cCB3aXRoIHNvbWV0aGluZwpldmVuIGJldHRl ci4KCk90aGVyd2lzZSB0aGUgcGF0Y2ggbG9va3MgZ29vZCB0byBtZSBzbyBmZWVsIGZyZWUgdG8g YWRkOgoKUmV2aWV3ZWQtYnk6IEphbiBLYXJhIDxqYWNrQHN1c2UuY3o+CgoJCQkJCQkJCUhvbnph Ci0tIApKYW4gS2FyYSA8amFja0BzdXNlLmNvbT4KU1VTRSBMYWJzLCBDUgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpkcmktZGV2ZWwgbWFpbGluZyBsaXN0 CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3Rv cC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWw=