Re: [RFC, PATCH] mm: map few pages around fault address if they arein page cache

[Andi Kleen]

> > There are some extreme cases where workloads could use a lot more memory
> > than before, if they access their memory sparsely in the right pattern.
> 
> Have you noticied that we don't actually allocate any memory: only reuse
> what's already there. Sure, it will increase VmSize, but do we care?

Good point. With that probably readahead is overkill, agree.

We would need it though if we ever do it for anonymous.

-Andi

-- 
ak@xxxxxxxxxxxxxxx -- Speaking for myself only
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