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SubjectRe: [PATCH 1/3] mm: tracking shared dirty pages
On Thu, 25 May 2006, Peter Zijlstra wrote:

> Ah, I see what you're saying here. Good point, David, Hugh?
>
> The reason I did it was because of Hugh's trick to use MAP_SHARED
> protection and building on top of it naturally solves the patch conflict
> Andrew would have had to resolve otherwise.

I guess what we wanted is a patch that addresses the concern of both
patches and not a combination of the patches. IMHO the dirty notification
of David's patch is possible with the shared dirty pages patch if we allow
the set_page_dirty method in address operations to sleep and return an
error code. However, this may raise some additional issues because we have
to check whenever we dirty a page.


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