On Wed, Jan 26, 2011 at 3:31 AM, Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> wrote:
>
> This patch changes the anon_vma refcount to be 0 when the object is
> free. It does this by adding 1 ref to being in use in the anon_vma
> structure (iow. the anon_vma->head list is not empty).
Why is this patch part of this series, rather than being an
independent patch before the whole series?
I think this part of the series is the only total no-brainer, ie we
should have done this from the beginning. The preemptability stuff I'm
more nervous about (performance issues? semantic differences?)
Linus
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