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Date:   Thu, 24 Sep 2020 15:58:05 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Steven Rostedt <rostedt@goodmis.org>
Cc:     Thomas Gleixner <tglx@linutronix.de>,
        Linus Torvalds <torvalds@linux-foundation.org>,
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Subject: Re: [patch RFC 00/15] mm/highmem: Provide a preemptible variant of
 kmap_atomic & friends
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On Thu, Sep 24, 2020 at 09:51:38AM -0400, Steven Rostedt wrote:

> > It turns out, that getting selected for pull-balance is exactly that
> > condition, and clearly a migrate_disable() task cannot be pulled, but we
> > can use that signal to try and pull away the running task that's in the
> > way.
> 
> Unless of course that running task is in a migrate disable section
> itself ;-)

See my ramblings here:

  https://lkml.kernel.org/r/20200924082717.GA1362448@hirez.programming.kicks-ass.net

My plan was to have the migrate_enable() of the running task trigger the
migration in that case.