Re: [PATCH -mm] slub: document setting min order withdebug_guardpage_minorder > 0

From: Stanislaw Gruszka
Date: Fri Dec 16 2011 - 08:22:14 EST


On Tue, Dec 13, 2011 at 04:41:34PM -0800, David Rientjes wrote:
> > > + When debug_guardpage_minorder > 0 parameter is specified, the
> > > + minimum possible order is used and cannot be changed.
> >
> > Well, I'm not sure what you wanted to say, actually? How does one change
> > debug_guardpage_minorder (or specify it), for example? Is it a kernel
> > command-line switch?
> >
>
> Yeah, we'll need a reference to Documentation/kernel-parameters.txt.
>
> > Also I'm not sure what "cannot be changed" is supposed to mean. Does it
> > mean that /sys/cache/slab/cache/order has no effect in that case?
> >
>
> Good point, we should say that "this tunable" cannot be used to change the
> order at runtime if debug_guardpage_minorder is used on the command line.
>
> Stanislaw, one more revision?

Ehh, I silently hoped that someone else with better English skills could
fix it ;-)

As Andrew already applied my patch (and fix whitespace) I'll post the
incremental patch in the next e-mail.

Thanks
Stanislaw
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