Re: anon_vma RFC2

[Hugh Dickins]

On Fri, 12 Mar 2004, Linus Torvalds wrote:
> 
> The absolute _LAST_ thing we want to have is a "remnant" rmap 
> infrastructure that only gets very occasional use. That's a GUARANTEED way 
> to get bugs, and really subtle behaviour.

On Sat, 13 Mar 2004, Linus Torvalds wrote:
> 
> I just think that if mremap() causes so many problems for reverse mapping,
> we should make _that_ the expensive operation, instead of making
> everything else more complicated.

Friday's Linus has a good point, but I agree more with Saturday's:
mremap MAYMOVE is a very special case, and I believe it would hurt
the whole to put it at the centre of the design.  But all power to
Andrea to achieve that.

Hugh

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