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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