On Thu, 2016-09-15 at 19:41 +0200, Andrea Arcangeli wrote:
> vma->vm_page_prot is read lockless from the rmap_walk, it may be
> updated concurrently and this prevents the risk of reading
> intermediate values.
> 
> Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>

Reviewed-by: Rik van Riel <riel@redhat.com>

-- 
All rights reversed