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    SubjectRe: [patch 2/3] mmu_notifier: Callbacks to invalidate address ranges
    On Thu, 31 Jan 2008, Robin Holt wrote:

    > > Index: linux-2.6/mm/memory.c
    > ...
    > > @@ -1668,6 +1678,7 @@ gotten:
    > > page_cache_release(old_page);
    > > unlock:
    > > pte_unmap_unlock(page_table, ptl);
    > > + mmu_notifier(invalidate_range_end, mm, 0);
    >
    > I think we can get an _end call without the _begin call before it.

    If that would be true then also the pte would have been left locked.

    We always hit unlock. Maybe I just do not see it?



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