On Mon, Jul 22, 2013 at 4:55 PM, Colin Cross <[email protected]> wrote:
>
> I think the right solution is to add a flag to the freezing task that
> marks it unfreezable. I think PF_NOFREEZE would work, although it is
> normally used on kernel threads, can you see if the attached patch
> helps?
Hmm. That does seem to be the right thing to do, but I wonder about
the *other* callers of freeze_processes() IOW, kexec and friends.
So maybe we should do this in {freeze|thaw}_processes() itself, and
just make the rule be that the caller of freeze_processes() itself is
obviously not frozen, and has to be the same one that then thaws
things?
Colin? Rafael? Comments?
Linus
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