linux-kernel - Re: [patch 3/4] mempolicy: add MPOL_F_STATIC

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Date:	Fri, 15 Feb 2008 12:14:17 -0800 (PST)
From:	David Rientjes <rientjes@...gle.com>
To:	Paul Jackson <pj@....com>
cc:	Lee.Schermerhorn@...com, akpm@...ux-foundation.org,
	clameter@....com, ak@...e.de, linux-kernel@...r.kernel.org,
	mel@....ul.ie
Subject: Re: [patch 3/4] mempolicy: add MPOL_F_STATIC_NODES flag

On Fri, 15 Feb 2008, Paul Jackson wrote:

> So that last line should be:
> 
> > 	1,3,5			4-10		5,7,9
> 

What about this case where one of the relative nodes wraps around to 
represent an already set node in the result?

	relative	mems_allowed	result
	1,3,6		4-8		5,7 or 5-7 ?

Neither result is immediately obvious to me logically: either your result 
has less weight than your relative nodemask (seems like a bad thing) or 
your relative nodemask really isn't all that relative to begin with (it's 
the same result as 1-3, 6-8, 11-13, etc).

Or is this just a less-than-desired side-effect of relative nodemasks that 
we're willing to live with given its other advantages?

		David
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