Re: [PATCH/RFC] Have sane default values for cpusets
From: Balbir Singh
Date: Wed May 12 2010 - 15:39:21 EST
* menage@xxxxxxxxxx <menage@xxxxxxxxxx> [2010-05-12 12:36:57]:
> On Wed, May 12, 2010 at 12:29 PM, Dhaval Giani <dhaval.giani@xxxxxxxxx> wrote:
> >> I think the idea is reasonable - the only way that I could see it
> >> breaking someone would be code that currently does something like:
> >>
> >> mkdir A
> >> mkdir B
> >> echo 1 > A/mem_exclusive
> >> echo 1 > B/mem_exclusive
> >> echo $mems_for_a > A/mems
> >> echo $mems_for_b > B/mems
> >>
> >> The attempts to set the mem_exclusive flags would fail, since A and B
> >> would both have all of the parent's mems.
> >>
> >
> > But would this not fail otherwise?
> >
>
> Assuming that mems_for_a and mems_for_b were disjoint, it would be
> fine currently.
>
Yep, that does seem like breakage.
--
Three Cheers,
Balbir
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