From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kara Subject: Re: [PATCH 01/10] mm: remove write/force parameters from __get_user_pages_locked() Date: Tue, 18 Oct 2016 14:43:05 +0200 Message-ID: <20161018124305.GA29967@quack2.suse.cz> References: <20161013002020.3062-1-lstoakes@gmail.com> <20161013002020.3062-2-lstoakes@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <20161013002020.3062-2-lstoakes@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Lorenzo Stoakes Cc: linux-mips@linux-mips.org, linux-fbdev@vger.kernel.org, Jan Kara , kvm@vger.kernel.org, linux-sh@vger.kernel.org, Dave Hansen , dri-devel@lists.freedesktop.org, linux-mm@kvack.org, netdev@vger.kernel.org, sparclinux@vger.kernel.org, linux-ia64@vger.kernel.org, linux-s390@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-scsi@vger.kernel.org, linux-rdma@vger.kernel.org, x86@kernel.org, Hugh Dickins , linux-media@vger.kernel.org, Rik van Riel , intel-gfx@lists.freedesktop.org, adi-buildroot-devel@lists.sourceforge.net, ceph-devel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-cris-kernel@axis.com, Linus Torvalds , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, linux-alpha@vger.kernel.orglin List-Id: ceph-devel.vger.kernel.org T24gVGh1IDEzLTEwLTE2IDAxOjIwOjExLCBMb3JlbnpvIFN0b2FrZXMgd3JvdGU6Cj4gVGhpcyBw YXRjaCByZW1vdmVzIHRoZSB3cml0ZSBhbmQgZm9yY2UgcGFyYW1ldGVycyBmcm9tIF9fZ2V0X3Vz ZXJfcGFnZXNfbG9ja2VkKCkKPiB0byBtYWtlIHRoZSB1c2Ugb2YgRk9MTF9GT1JDRSBleHBsaWNp dCBpbiBjYWxsZXJzIGFzIHVzZSBvZiB0aGlzIGZsYWcgY2FuIHJlc3VsdAo+IGluIHN1cnByaXNp bmcgYmVoYXZpb3VyIChhbmQgaGVuY2UgYnVncykgd2l0aGluIHRoZSBtbSBzdWJzeXN0ZW0uCj4g Cj4gU2lnbmVkLW9mZi1ieTogTG9yZW56byBTdG9ha2VzIDxsc3RvYWtlc0BnbWFpbC5jb20+CgpM b29rcyBnb29kLiBZb3UgY2FuIGFkZDoKClJldmlld2VkLWJ5OiBKYW4gS2FyYSA8amFja0BzdXNl LmN6PgoKCQkJCQkJCQlIb256YQotLSAKSmFuIEthcmEgPGphY2tAc3VzZS5jb20+ClNVU0UgTGFi cywgQ1IKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50 ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBz Oi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg== From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kara Subject: Re: [PATCH 01/10] mm: remove write/force parameters from __get_user_pages_locked() Date: Tue, 18 Oct 2016 14:43:05 +0200 Message-ID: <20161018124305.GA29967@quack2.suse.cz> References: <20161013002020.3062-1-lstoakes@gmail.com> <20161013002020.3062-2-lstoakes@gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <20161013002020.3062-2-lstoakes@gmail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Content-Type: text/plain; charset="us-ascii" To: Lorenzo Stoakes Cc: linux-mips@linux-mips.org, linux-fbdev@vger.kernel.org, Jan Kara , kvm@vger.kernel.org, linux-sh@vger.kernel.org, Dave Hansen , dri-devel@lists.freedesktop.org, linux-mm@kvack.org, netdev@vger.kernel.org, sparclinux@vger.kernel.org, linux-ia64@vger.kernel.org, linux-s390@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-scsi@vger.kernel.org, linux-rdma@vger.kernel.org, x86@kernel.org, Hugh Dickins , linux-media@vger.kernel.org, Rik van Riel , intel-gfx@lists.freedesktop.org, adi-buildroot-devel@lists.sourceforge.net, ceph-devel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-cris-kernel@axis.com, Linus Torvalds , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, linux-alpha@vger.kernel.org, lin T24gVGh1IDEzLTEwLTE2IDAxOjIwOjExLCBMb3JlbnpvIFN0b2FrZXMgd3JvdGU6Cj4gVGhpcyBw YXRjaCByZW1vdmVzIHRoZSB3cml0ZSBhbmQgZm9yY2UgcGFyYW1ldGVycyBmcm9tIF9fZ2V0X3Vz ZXJfcGFnZXNfbG9ja2VkKCkKPiB0byBtYWtlIHRoZSB1c2Ugb2YgRk9MTF9GT1JDRSBleHBsaWNp dCBpbiBjYWxsZXJzIGFzIHVzZSBvZiB0aGlzIGZsYWcgY2FuIHJlc3VsdAo+IGluIHN1cnByaXNp bmcgYmVoYXZpb3VyIChhbmQgaGVuY2UgYnVncykgd2l0aGluIHRoZSBtbSBzdWJzeXN0ZW0uCj4g Cj4gU2lnbmVkLW9mZi1ieTogTG9yZW56byBTdG9ha2VzIDxsc3RvYWtlc0BnbWFpbC5jb20+CgpM b29rcyBnb29kLiBZb3UgY2FuIGFkZDoKClJldmlld2VkLWJ5OiBKYW4gS2FyYSA8amFja0BzdXNl LmN6PgoKCQkJCQkJCQlIb256YQotLSAKSmFuIEthcmEgPGphY2tAc3VzZS5jb20+ClNVU0UgTGFi cywgQ1IKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50 ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBz Oi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg== From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan Kara Date: Tue, 18 Oct 2016 12:43:05 +0000 Subject: Re: [PATCH 01/10] mm: remove write/force parameters from __get_user_pages_locked() Message-Id: <20161018124305.GA29967@quack2.suse.cz> List-Id: References: <20161013002020.3062-1-lstoakes@gmail.com> <20161013002020.3062-2-lstoakes@gmail.com> In-Reply-To: <20161013002020.3062-2-lstoakes@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Lorenzo Stoakes Cc: linux-mips@linux-mips.org, linux-fbdev@vger.kernel.org, Jan Kara , kvm@vger.kernel.org, linux-sh@vger.kernel.org, Dave Hansen , dri-devel@lists.freedesktop.org, linux-mm@kvack.org, netdev@vger.kernel.org, sparclinux@vger.kernel.org, linux-ia64@vger.kernel.org, linux-s390@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-scsi@vger.kernel.org, linux-rdma@vger.kernel.org, x86@kernel.org, Hugh Dickins , linux-media@vger.kernel.org, Rik van Riel , intel-gfx@lists.freedesktop.org, adi-buildroot-devel@lists.sourceforge.net, ceph-devel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-cris-kernel@axis.com, Linus Torvalds , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, linux-alpha@vger.kernel.orglin On Thu 13-10-16 01:20:11, Lorenzo Stoakes wrote: > This patch removes the write and force parameters from __get_user_pages_locked() > to make the use of FOLL_FORCE explicit in callers as use of this flag can result > in surprising behaviour (and hence bugs) within the mm subsystem. > > Signed-off-by: Lorenzo Stoakes Looks good. You can add: Reviewed-by: Jan Kara Honza -- Jan Kara SUSE Labs, CR From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Tue, 18 Oct 2016 14:43:18 +0200 (CEST) Received: from mx2.suse.de ([195.135.220.15]:40243 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S23992991AbcJRMnK3LhoK (ORCPT ); Tue, 18 Oct 2016 14:43:10 +0200 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id 4AEE4AD8E; Tue, 18 Oct 2016 12:43:08 +0000 (UTC) Received: by quack2.suse.cz (Postfix, from userid 1000) id E0EF81E0F93; Tue, 18 Oct 2016 14:43:05 +0200 (CEST) Date: Tue, 18 Oct 2016 14:43:05 +0200 From: Jan Kara To: Lorenzo Stoakes Cc: linux-mm@kvack.org, Linus Torvalds , Jan Kara , Hugh Dickins , Dave Hansen , Rik van Riel , Mel Gorman , Andrew Morton , adi-buildroot-devel@lists.sourceforge.net, ceph-devel@vger.kernel.org, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, kvm@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-cris-kernel@axis.com, linux-fbdev@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-mips@linux-mips.org, linux-rdma@vger.kernel.org, linux-s390@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-scsi@vger.kernel.org, linux-security-module@vger.kernel.org, linux-sh@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, netdev@vger.kernel.org, sparclinux@vger.kernel.org, x86@kernel.org Subject: Re: [PATCH 01/10] mm: remove write/force parameters from __get_user_pages_locked() Message-ID: <20161018124305.GA29967@quack2.suse.cz> References: <20161013002020.3062-1-lstoakes@gmail.com> <20161013002020.3062-2-lstoakes@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20161013002020.3062-2-lstoakes@gmail.com> User-Agent: Mutt/1.5.24 (2015-08-30) Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 55484 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: jack@suse.cz Precedence: bulk List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: linux-mips X-List-ID: linux-mips List-subscribe: List-owner: List-post: List-archive: X-list: linux-mips On Thu 13-10-16 01:20:11, Lorenzo Stoakes wrote: > This patch removes the write and force parameters from __get_user_pages_locked() > to make the use of FOLL_FORCE explicit in callers as use of this flag can result > in surprising behaviour (and hence bugs) within the mm subsystem. > > Signed-off-by: Lorenzo Stoakes Looks good. You can add: Reviewed-by: Jan Kara Honza -- Jan Kara SUSE Labs, CR From mboxrd@z Thu Jan 1 00:00:00 1970 From: jack@suse.cz (Jan Kara) Date: Tue, 18 Oct 2016 14:43:05 +0200 Subject: [PATCH 01/10] mm: remove write/force parameters from __get_user_pages_locked() In-Reply-To: <20161013002020.3062-2-lstoakes@gmail.com> References: <20161013002020.3062-1-lstoakes@gmail.com> <20161013002020.3062-2-lstoakes@gmail.com> Message-ID: <20161018124305.GA29967@quack2.suse.cz> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thu 13-10-16 01:20:11, Lorenzo Stoakes wrote: > This patch removes the write and force parameters from __get_user_pages_locked() > to make the use of FOLL_FORCE explicit in callers as use of this flag can result > in surprising behaviour (and hence bugs) within the mm subsystem. > > Signed-off-by: Lorenzo Stoakes Looks good. You can add: Reviewed-by: Jan Kara Honza -- Jan Kara SUSE Labs, CR From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Tue, 18 Oct 2016 14:43:05 +0200 From: Jan Kara To: Lorenzo Stoakes Cc: linux-mm@kvack.org, Linus Torvalds , Jan Kara , Hugh Dickins , Dave Hansen , Rik van Riel , Mel Gorman , Andrew Morton , adi-buildroot-devel@lists.sourceforge.net, ceph-devel@vger.kernel.org, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, kvm@vger.kernel.org, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-cris-kernel@axis.com, linux-fbdev@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-mips@linux-mips.org, linux-rdma@vger.kernel.org, linux-s390@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-scsi@vger.kernel.org, linux-security-module@vger.kernel.org, linux-sh@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, netdev@vger.kernel.org, sparclinux@vger.kernel.org, x86@kernel.org Subject: Re: [PATCH 01/10] mm: remove write/force parameters from __get_user_pages_locked() Message-ID: <20161018124305.GA29967@quack2.suse.cz> References: <20161013002020.3062-1-lstoakes@gmail.com> <20161013002020.3062-2-lstoakes@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20161013002020.3062-2-lstoakes@gmail.com> Sender: owner-linux-mm@kvack.org List-ID: On Thu 13-10-16 01:20:11, Lorenzo Stoakes wrote: > This patch removes the write and force parameters from __get_user_pages_locked() > to make the use of FOLL_FORCE explicit in callers as use of this flag can result > in surprising behaviour (and hence bugs) within the mm subsystem. > > Signed-off-by: Lorenzo Stoakes Looks good. You can add: Reviewed-by: Jan Kara Honza -- Jan Kara SUSE Labs, CR -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org