Re: a plea for mincore()/madvise()

[Linus Torvalds <torvalds@transmeta.com>]

On Fri, 10 Mar 2000, Chuck Lever wrote:
> 
> ja, that's exactly what my patch does.  i'm still not sure what you don't
> like about it.  i'm happy to make it do anything you want, but it sounds
> like we are in agreement here.

Ok. I may not have seen (or noticed) your patch, I've seen earlier patches
that didn't do that.

> my only sticking point is that i'm not sure what community consensus there
> is about MADV_DONTNEED.  i'd like to create a patch that implements
> everything except MADV_DONTNEED, then maybe we should have more discussion
> about exactly how that will work and add it later.

I'd like MADV_DONTNEED to just clear the page tables. If it was a private
mapping, all the modifications get lost. If it was a shared mapping,
modifications since the last msync() may or may not get lost. 

		Linus

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