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From:   Linus Torvalds <torvalds@linux-foundation.org>
Date:   Sun, 20 Sep 2020 10:42:55 -0700
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Subject: Re: [patch RFC 00/15] mm/highmem: Provide a preemptible variant of
 kmap_atomic & friends
To:     Thomas Gleixner <tglx@linutronix.de>
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On Sun, Sep 20, 2020 at 10:40 AM Thomas Gleixner <tglx@linutronix.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