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

[Christoph Lameter]

On Tue, 11 Sep 2007, Andrea Arcangeli wrote:

> But the whole point is that with the config_page_shift, Nick's worst
> case scenario can't happen by design regardless of defrag or not
> defrag. While it can _definitely_ happen with SGI design (regardless
> of any defrag thing). We can still try to save some memory by
> defragging the slab a bit, but it's by far *not* required with
> config_page_shift. No defrag at all is required infact.

Which worst case scenario? So far this is all a bit foggy.

> Let's see how good the mmap support for variable order page size will
> work after the 2 weeks...

Yeah. Give us some failure scenarios please!
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