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SubjectRe: [patch 1/3] mmu_notifier: Core code
On Thu, Jan 31, 2008 at 07:58:40PM -0800, Christoph Lameter wrote:
> On Thu, 31 Jan 2008, Robin Holt wrote:
>
> > > + void (*invalidate_range_end)(struct mmu_notifier *mn,
> > > + struct mm_struct *mm, int atomic);
> >
> > I think we need to pass in the same start-end here as well. Without it,
> > the first invalidate_range would have to block faulting for all addresses
> > and would need to remain blocked until the last invalidate_range has
> > completed. While this would work, (and will probably be how we implement
> > it for the short term), it is far from ideal.
>
> Ok. Andrea wanted the same because then he can void the begin callouts.
>
> The problem is that you would have to track the start-end addres right?

Yep. We will probably no do that in the next week, but I would expect
we have that working before we submit xpmem again. We will probably
just chain them up in a regular linked list.

Thanks,
Robin


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