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=-3.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, 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 545BDC55179 for ; Thu, 29 Oct 2020 09:25:31 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id CC5342192A for ; Thu, 29 Oct 2020 09:25:30 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ffwll.ch header.i=@ffwll.ch header.b="RAZGAbKd" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CC5342192A Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ffwll.ch Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id BCA3C6B0062; Thu, 29 Oct 2020 05:25:29 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id B7ACF6B0068; Thu, 29 Oct 2020 05:25:29 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A692E6B006C; Thu, 29 Oct 2020 05:25:29 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0096.hostedemail.com [216.40.44.96]) by kanga.kvack.org (Postfix) with ESMTP id 777316B0062 for ; Thu, 29 Oct 2020 05:25:29 -0400 (EDT) Received: from smtpin22.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 2231C180AD815 for ; Thu, 29 Oct 2020 09:25:29 +0000 (UTC) X-FDA: 77424429978.22.touch49_4603d112728c Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin22.hostedemail.com (Postfix) with ESMTP id 02CC618038E68 for ; Thu, 29 Oct 2020 09:25:28 +0000 (UTC) X-HE-Tag: touch49_4603d112728c X-Filterd-Recvd-Size: 3174 Received: from mail-ot1-f66.google.com (mail-ot1-f66.google.com [209.85.210.66]) by imf45.hostedemail.com (Postfix) with ESMTP for ; Thu, 29 Oct 2020 09:25:28 +0000 (UTC) Received: by mail-ot1-f66.google.com with SMTP id m22so1697965ots.4 for ; Thu, 29 Oct 2020 02:25:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ffwll.ch; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=RXd5L3340dzHPl4D7TSnIVGFAYIoQ/W+pLHz6LYz95I=; b=RAZGAbKdB4XcnSD0wp1Kz5dBTHMEAkPA/y5Q5zBFcm5ek6TOqOD+2MjSuNA7CsSuFv QdasXZzvzm82On3eSCMCjzvEPeFEdeSGCKm4fjXr/Z2Mh9xwUtFmVb6ioAaMFNhmVvnm LvNYGo6oa8r1Gs3CbA9euLgw6UBFM7BcU9IdE= 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; bh=RXd5L3340dzHPl4D7TSnIVGFAYIoQ/W+pLHz6LYz95I=; b=DZJ/F/WJqRUsPkdG6zGGZrvuVVJTQPU3enUqrBvhpFMRqsdxR4786Nfw+Sp3/Zx82K CPQbBtTTh3N7X9Txf/m0Ky5+0kpCs6y2W3KiL31U2uFTxcM73sOWmbiRk4r8GEPnSE0R 3JdD2+0Ixx1XseWH+c966QpOm9byl6DIubeUY11opL0PYu3uqsb8z8yJAPmQQmouO7VZ /X80SAWr4l+JGL70tCZx+FRadbitzACeIF/xrTnRfODSfAS1s4GljLMBHFzAaz40Um/Z 5yPvanup+P9ugNJVJGYD2NdvtpmL5VMRUWMPG2Hr2SsXLukVuFibFpntm+vDsTEZBclC L1OQ== X-Gm-Message-State: AOAM533T2egnWNksZ2agIv84aj8mVhx7M2sa+MHwI1MqAMj9+AjdZJnD z5wF8phT+bunH4tyzJwCyVT95gtx7BIwnWSTOz00uQ== X-Google-Smtp-Source: ABdhPJz3d3GbocYLOWK17PC84OSTKCpC1P9Cp1Gqiuhg8zJB6kTRUJIIoeLruWIEtxgmiFM3IrJbR1M7sDMXTefUSTI= X-Received: by 2002:a05:6830:1c3c:: with SMTP id f28mr2685703ote.188.1603963527533; Thu, 29 Oct 2020 02:25:27 -0700 (PDT) MIME-Version: 1.0 References: <20201026105818.2585306-1-daniel.vetter@ffwll.ch> <20201029085749.GB25658@infradead.org> In-Reply-To: <20201029085749.GB25658@infradead.org> From: Daniel Vetter Date: Thu, 29 Oct 2020 10:25:16 +0100 Message-ID: Subject: Re: [PATCH v4 00/15] follow_pfn and other iomap races To: Christoph Hellwig Cc: DRI Development , LKML , KVM list , Linux MM , Linux ARM , linux-samsung-soc , "open list:DMA BUFFER SHARING FRAMEWORK" , linux-s390 Content-Type: text/plain; charset="UTF-8" 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 Thu, Oct 29, 2020 at 9:57 AM Christoph Hellwig wrote: > > Maybe I'm missing something, but shouldn't follow_pfn be unexported > at the end of the series? kvm is a legit user and modular afaict. But since you can't use this without an mmu_notifier anyway (or digging around in pagetable locking), maybe it should be EXPORT_SYMBOL_GPL now at least? -Daniel -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch