On Thu, Mar 12, 2020 at 04:33:10PM -0300, Jason Gunthorpe wrote:
> pmd_to_hmm_pfn_flags() already checks it and makes the cpu flags 0. If no
> fault is requested then the pfns should be returned with the not valid
> flags.
>
> It should not unconditionally fault if faulting is not requested.
>
> Fixes: 2aee09d8c116 ("mm/hmm: change hmm_vma_fault() to allow write fault on page basis")
> Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxxxx>
> ---
> mm/hmm.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> Bonus patch, this one got found after I made the series..
Looks good,
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
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