Re: 3.11-rc regression bisected: s2disk does not work (was Re: [PATCHv3 13/16] futex: use freezable blocking call)

[Linus Torvalds]

On Mon, Jul 22, 2013 at 4:55 PM, Colin Cross <ccross@xxxxxxxxxxx> 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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/