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=-0.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham 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 CEAF5C48BD3 for ; Wed, 26 Jun 2019 16:14:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9D5E1217F5 for ; Wed, 26 Jun 2019 16:14:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=intel-com.20150623.gappssmtp.com header.i=@intel-com.20150623.gappssmtp.com header.b="l+5kJ6to" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726359AbfFZQOo (ORCPT ); Wed, 26 Jun 2019 12:14:44 -0400 Received: from mail-ot1-f65.google.com ([209.85.210.65]:40820 "EHLO mail-ot1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726227AbfFZQOn (ORCPT ); Wed, 26 Jun 2019 12:14:43 -0400 Received: by mail-ot1-f65.google.com with SMTP id e8so3081952otl.7 for ; Wed, 26 Jun 2019 09:14:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=intel-com.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=XK0CaHJOVcsS/u0euQkBQYUAFEHomal+V6KfwmFuG+U=; b=l+5kJ6tokPJ98bH2NME9M/AQ27NvFMKuOsXn1/Bb6bOBzelrSngvtDZJXmVwZKzpKi qjSD/BPNZzWpZiBQzbopXZ4t+Owe9yGEnJZxcLTPAlrrPvnYO2K7gCbSAaaiJHFcBp4k rxUq8p1DHnLMI0fRDu2WCtVRP/OHmPtRFurCHJX0OhgjoUZQUqGECtXD/hiUSR9PPelH MnkCXYqaYmm4WKtHJZYWuY7L6Kj9qhni0KNGsJokbTzfJurnEEHErfJ69HKEvmfEeo+E N7IwPwAkdbg4plX6eEOz52RHtcXnuvonc5/m143W02YNIvHsz5xJAtpZFJ8Hrcf91kdm NShw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=XK0CaHJOVcsS/u0euQkBQYUAFEHomal+V6KfwmFuG+U=; b=bXILIXZVt1NL67onBlgrIyfuAp7fPStjBoG/bcENMnY/MmOfV69RcyrsaJIN/5TGlZ MXruzBw5AOryxcC6wbcbt64IevsduEGpJJAbfeolFgvTAz5+Pyat/hTtZTlHgrwg+Ok0 QpbTzcO3vnG3GR+w3mbUOumJNiSZazL7lcJkT+Tv9y+4pOx6WWtCZGyojvIBQkn8SMoa MflYGKurpaC6seAZc/iVjLMiR6j7bP2Ob6unIFt+arXaD/2wMFukIbw8hBuwBhVhM5du MNUw+7Gd6Rc9ABqEOSH0LPTXp+odjH3ttJpFG3Fw+JAFWf2Ko/u2LtL0l+KalWoZYGFV mhog== X-Gm-Message-State: APjAAAVU2mF8b8CncSQyJNN2Pcm8Y/Zrx9lriOYzfaMQiO7KwZ82V58V Y0Dpk2oDPw1gakUASKrxrLAT4qijd3EyxaiJCyf6ew== X-Google-Smtp-Source: APXvYqxlK4A4nPLhfNez6panLCe0oG2uZ68rpjoeO+K9OBDO45YdiJCTPi2DLYKpN0RI7gOpjzzUX8DJkFMKIZ4j7YA= X-Received: by 2002:a9d:7a9a:: with SMTP id l26mr1155884otn.71.1561565683159; Wed, 26 Jun 2019 09:14:43 -0700 (PDT) MIME-Version: 1.0 References: <20190613094326.24093-1-hch@lst.de> <20190613094326.24093-6-hch@lst.de> <20190620191733.GH12083@dhcp22.suse.cz> <20190625072317.GC30350@lst.de> <20190625150053.GJ11400@dhcp22.suse.cz> <20190625190038.GK11400@dhcp22.suse.cz> <20190626054645.GB17798@dhcp22.suse.cz> In-Reply-To: <20190626054645.GB17798@dhcp22.suse.cz> From: Dan Williams Date: Wed, 26 Jun 2019 09:14:32 -0700 Message-ID: Subject: Re: [PATCH 05/22] mm: export alloc_pages_vma To: Michal Hocko Cc: Christoph Hellwig , =?UTF-8?B?SsOpcsO0bWUgR2xpc3Nl?= , Jason Gunthorpe , Ben Skeggs , Linux MM , nouveau@lists.freedesktop.org, Maling list - DRI developers , linux-nvdimm , linux-pci@vger.kernel.org, Linux Kernel Mailing List Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Tue, Jun 25, 2019 at 10:46 PM Michal Hocko wrote: > > On Tue 25-06-19 12:52:18, Dan Williams wrote: > [...] > > > Documentation/process/stable-api-nonsense.rst > > > > That document has failed to preclude symbol export fights in the past > > and there is a reasonable argument to try not to retract functionality > > that had been previously exported regardless of that document. > > Can you point me to any specific example where this would be the case > for the core kernel symbols please? The most recent example that comes to mind was the thrash around __kernel_fpu_{begin,end} [1]. I referenced that when debating _GPL symbol policy with J=C3=A9r=C3=B4me [2]. [1]: https://lore.kernel.org/lkml/20190522100959.GA15390@kroah.com/ [2]: https://lore.kernel.org/lkml/CAPcyv4gb+r=3D=3DriKFXkVZ7gGdnKe62yBmZ7xO= a4uBBByhnK9Tzg@mail.gmail.com/