Re: [patch 3/4] mempolicy: add MPOL_F_STATIC_NODES flag

From: David Rientjes
Date: Thu Feb 14 2008 - 14:46:07 EST


On Thu, 14 Feb 2008, Paul Jackson wrote:

> No and yes. The manner in which too many nodes (as requested in a
> RELATIVE mask) are folded into too small a cpuset is not actually
> that critical, so long as it doesn't come up empty. However, what
> I'll be recommending, in a follow-up patch, will be folding the
> larger set into the smaller one modulo the size of the smaller one.
>

So basically the "relative" nodemask that is passed with
MPOL_F_RELATIVE_NODES is wrapped around the allowed nodes?

relative nodemask mems_allowed result
1,3,5 4 4
1,3,5 4-6 4-6
1,3,5 4-8 4-5,7
1,3,5 4-10 4,6,8

Is that correct?

David
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