Messages in this thread | | | Date | Thu, 15 May 2008 10:33:57 -0700 (PDT) | From | Christoph Lameter <> | Subject | Re: [PATCH 08 of 11] anon-vma-rwsem |
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On Thu, 15 May 2008, Nick Piggin wrote:
> Oh, I get that confused because of the mixed up naming conventions > there: unmap_page_range should actually be called zap_page_range. But > at any rate, yes we can easily zap pagetables without holding mmap_sem.
How is that synchronized with code that walks the same pagetable. These walks may not hold mmap_sem either. I would expect that one could only remove a portion of the pagetable where we have some sort of guarantee that no accesses occur. So the removal of the vma prior ensures that?
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