linux-kernel - Re: [PATCH v4 00/15] follow

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Message-ID: <CAKMK7uEV7sQ48w1Dd=WCY1r6LrY+aEq3ASnouOebQoo=Zr=CTQ@mail.gmail.com>
Date:   Thu, 29 Oct 2020 10:25:16 +0100
From:   Daniel Vetter <daniel.vetter@...ll.ch>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     DRI Development <dri-devel@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>,
        KVM list <kvm@...r.kernel.org>, Linux MM <linux-mm@...ck.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
        "open list:DMA BUFFER SHARING FRAMEWORK" 
        <linux-media@...r.kernel.org>,
        linux-s390 <linux-s390@...r.kernel.org>
Subject: Re: [PATCH v4 00/15] follow_pfn and other iomap races

On Thu, Oct 29, 2020 at 9:57 AM Christoph Hellwig <hch@...radead.org> 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