Re: [00/41] Large Blocksize Support V7 (adds memmap support)

From: Nick Piggin
Date: Tue Sep 11 2007 - 16:25:52 EST


On Wednesday 12 September 2007 06:01, Christoph Lameter wrote:
> On Tue, 11 Sep 2007, Nick Piggin wrote:
> > There is a limitation in the VM. Fragmentation. You keep saying this
> > is a solved issue and just assuming you'll be able to fix any cases
> > that come up as they happen.
> >
> > I still don't get the feeling you realise that there is a fundamental
> > fragmentation issue that is unsolvable with Mel's approach.
>
> Well my problem first of all is that you did not read the full message. It
> discusses that later and provides page pools to address the issue.
>
> Secondly you keep FUDding people with lots of theoretical concerns
> assuming Mel's approaches must fail. If there is an issue (I guess there
> must be right?) then please give us a concrete case of a failure that we
> can work against.

On the other hand, you ignore the potential failure cases, and ignore
the alternatives that do not have such cases.
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