Re: [PATCH 2/2] Futex non-page-pinning fix

[Andrew Morton]

Rusty Russell <rusty@xxxxxxxxxxxxxxx> wrote:
>
>  I don't know of a rule which says "thou shalt not wake a random thread
>  in the kernel": for all I know wierd things like CPU hotplug or
>  software suspend may do this in the future.

pdflush is sensitive to that.  It emits angry squeaks if unexpectedly woken.

And up until a couple of months ago there were sporadic squeaking reports,
but they seem to have gone away.

Yes, we should treat a random wakeup like that as a bug.

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