[PATCH hmm 9/8] mm/hmm: do not check pmd_protnone twice in hmm_vma_handle_pmd()

[Christoph Hellwig]

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 at mellanox.com>
> ---
>  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 at lst.de>