linux-kernel - Re: [PATCH 0/3] bootmem2 III

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Message-ID: <482990AB.7070905@firstfloor.org>
Date:	Tue, 13 May 2008 14:59:23 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Johannes Weiner <hannes@...urebad.de>
CC:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Ingo Molnar <mingo@...e.hu>,
	Yinghai Lu <yhlu.kernel@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH 0/3] bootmem2 III


> I was wondering yesterday if it would be feasible to enforce
> contiguousness for nodes.

And lose the memory? That would make people not happy.

  So that arch-code does not create one pgdat
> for each node but one for each contiguous block.  I have not yet looked
> deeper into it, but I suspect that other mm code has similar problems
> with nodes spanning other nodes.

I wouldn't think so. At least sparse memory with large holes is not that
uncommon in the non x86 world.

-Andi

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