linux-kernel - Re: [patch RFC 00/15] mm/highmem: Provide a preemptible variant of kmap

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Message-ID: <CAHk-=wgF-upZVpqJWK=TK7MS9H-Rp1ZxGfOG+dDW=JThtxAzVQ@mail.gmail.com>
Date:   Sun, 20 Sep 2020 10:42:55 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        Paul McKenney <paulmck@...nel.org>,
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Subject: Re: [patch RFC 00/15] mm/highmem: Provide a preemptible variant of
 kmap_atomic & friends

On Sun, Sep 20, 2020 at 10:40 AM Thomas Gleixner <tglx@...utronix.de> wrote:
>
> I think the more obvious solution is to split the whole exercise:
>
>   schedule()
>      prepare_switch()
>         unmap()
>
>     switch_to()
>
>     finish_switch()
>         map()

Yeah, that looks much easier to explain. Ack.

               Linus