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    SubjectRe: [PATCH 20/25] mm: Simplify anon_vma refcounts
    On Wed, 2011-01-26 at 06:16 +1000, Linus Torvalds wrote:
    > On Wed, Jan 26, 2011 at 3:31 AM, Peter Zijlstra <> 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?)

    It relies on patch 19, which moves the anon_vma refcount out from under

    If however you like it, I can move 19 and this patch up to the start and
    have that go your way soon.

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      Last update: 2011-01-25 21:33    [W:0.019 / U:0.300 seconds]
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