Re: [PATCH] mm,numa: remove BUG_ON in __handle_mm_fault

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On Fri, Apr 25, 2014 at 02:41:47PM -0400, Rik van Riel wrote:
> Changing PTEs and PMDs to pte_numa & pmd_numa is done with the
> mmap_sem held for reading, which means a pmd can be instantiated
> and/or turned into a numa one while __handle_mm_fault is examining
> the value of orig_pmd.
> 
> If that happens, __handle_mm_fault should just return and let
> the page fault retry, instead of throwing an oops.
> 
> Signed-off-by: Rik van Riel <riel@xxxxxxxxxx>
> Reported-by: Sunil Pandey <sunil.k.pandey@xxxxxxxxx>

Looks good to me.
Reviewed-by: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>

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