On 09/15/2010 01:16 PM, Andrea Arcangeli wrote:
From: Andrea Arcangeli<aarcange@xxxxxxxxxx> The below bug in fork lead to the rmap walk finding the parent huge-pmd twice instead of just one, because the anon_vma_chain objects of the child vma still point to the vma->vm_mm of the parent. The below patch fixes it by making the rmap walk accurate during fork. It's not a big deal normally but it worth being accurate considering the cost is the same. Signed-off-by: Andrea Arcangeli<aarcange@xxxxxxxxxx>
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