Re: bogosort (was Re: Re: [RFC][PATCH -mm 5/6] Freezer: Use freezing timeout more efficiently)

Pavel Machek
2007-07-10T22:21:42Z

Hi!

> > > > Task here is to sort the tasks, and freeze them in such order that
> > > > freezing works, right? Yep, we do not know the dependencies
> > > > explicitely... but what you invented is bogosort.
> > >
> > > Define, please?
> >
> > Uff, sorry. http://en.wikipedia.org/wiki/Bogosort .
>
> So this thing is not bogosort, because it makes the tasks that haven't frozen
> appear on the bottom. IOW, the first (failing) freezing attempt is used as
> a sieve, so the process is not completely random.
>
> This actually is important, because the things like FUSE should be taken
> care of within a couple of iterations.

Aha, ok, I misunderstood the code. So you try to freeze the things
that could not be frozen, first? Hmm, something like that could
work...

> > Hmm, if someone wants to retry... perhaps we should just return
> > specific error and let the _userland_ do the retries? It can do it as
> > efficiently as outer loop in freezer...
>
> No, because _that_ would be bogosort, as defined in Wikipedia. :-)

So it is me who invented bogosort, heh ;-).
Pavel
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