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=-3.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 D79A9C3524D for ; Mon, 3 Feb 2020 13:26:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id AC24F2082E for ; Mon, 3 Feb 2020 13:26:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=shutemov-name.20150623.gappssmtp.com header.i=@shutemov-name.20150623.gappssmtp.com header.b="Qvgtk33f" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727320AbgBCN0R (ORCPT ); Mon, 3 Feb 2020 08:26:17 -0500 Received: from mail-lj1-f193.google.com ([209.85.208.193]:32861 "EHLO mail-lj1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726653AbgBCN0R (ORCPT ); Mon, 3 Feb 2020 08:26:17 -0500 Received: by mail-lj1-f193.google.com with SMTP id y6so14641523lji.0 for ; Mon, 03 Feb 2020 05:26:15 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=shutemov-name.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=/c8JqFBoF+Wyv0y7vjPLE9bVpeDasBR2S69E+7r2TtY=; b=Qvgtk33ftlbcsS5ozma4SkqBFwKXe/etS4q98w1ik72KUgLvZCb5LF6bX9en+6X9bo RZkuxEhczs1LHPUxff5YONZLAinu2abSX1x8hd1YrVMhXhSPB6YnCGS2IgB7n4ZvycwY 4guibrya0uJJxVpAXyYDoHuuVBQYz+s5yLsNWj8sly+tVIODbFFekbsty1PMf0QzYhud yGJvBqTV33CGmK5iIJ6dNPJY9ofEyM3bweM9PnVwm793arTmLHxyQ5c99wp2YWiXJHjo fRwKRyBoSNe9NapKkTYXp8GqbEXUwRw4pFOvGuL+bWN/i5mbQ7e2xKkp1bS2QFcw0bFF p4Og== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=/c8JqFBoF+Wyv0y7vjPLE9bVpeDasBR2S69E+7r2TtY=; b=kpYhleu1J6vaR2DLiDODh28EPpVwHQ5sto0RA2Rp+P/P0TL6AesHy7vwYPk6/Kq5Rf rlOGLYWFHX3oHeBPHr6YBsjhgh3WEPGjv4rT9BvoX5AJ6n991FFUhEEJEEpg9bBM+ivO 6Ch4bsqxWa/qRSskGWwYBQl0gSJMiswTP56xmPg/Yl2SqV+A5OPD4QGSXfoZViGTqVR+ dz9JmNnbhA0j37ODfDQ0tCOB0Cuvqf7Mjg5581INQqKpvvaAw5kJIkAsI9p+6Uz9MDgP 0dRW8zc8PD6lZsdnTUcomSwS/s4VfxEkR7YYOJ+m4UkiYH7UGv/80B5kbunCVSJ18DyF yCTQ== X-Gm-Message-State: APjAAAXaSnn/2WOIodCOntkDZbB5dNYRyZ63tnu/6VCmZ68KB2zVZfy3 evXfLsuMgIQFI0iAZiI97AEuxQ== X-Google-Smtp-Source: APXvYqyAwd06U5sHJ6RJuXAzdAU4K5P7qW3PVQBSvKIMhVgDvbt0mabo67VXojbyegXmFIr9BORhmw== X-Received: by 2002:a05:651c:1bb:: with SMTP id c27mr14397156ljn.277.1580736374697; Mon, 03 Feb 2020 05:26:14 -0800 (PST) Received: from box.localdomain ([86.57.175.117]) by smtp.gmail.com with ESMTPSA id m24sm11753539ljb.81.2020.02.03.05.26.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Feb 2020 05:26:13 -0800 (PST) Received: by box.localdomain (Postfix, from userid 1000) id A788C100DC8; Mon, 3 Feb 2020 16:26:26 +0300 (+03) Date: Mon, 3 Feb 2020 16:26:26 +0300 From: "Kirill A. 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> Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org 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