On Fri, Mar 20, 2020 at 01:49:05PM -0300, Jason Gunthorpe wrote:
> From: Jason Gunthorpe <[email protected]>
> 
> swp_offset() should not be called directly, the wrappers are supposed to
> abstract away the encoding of the device_private specific information in
> the swap entry.
> 
> Signed-off-by: Jason Gunthorpe <[email protected]>
> ---
>  mm/hmm.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/mm/hmm.c b/mm/hmm.c
> index a09b4908e9c81a..fd9ee2b5fd9989 100644
> --- a/mm/hmm.c
> +++ b/mm/hmm.c
> @@ -259,8 +259,8 @@ static int hmm_vma_handle_pte(struct mm_walk *walk, 
> unsigned long addr,
>                * the PFN even if not present.
>                */
>               if (hmm_is_device_private_entry(range, entry)) {
> -                     *pfn = hmm_device_entry_from_pfn(range,
> -                                         swp_offset(entry));
> +                     *pfn = hmm_device_entry_from_pfn(
> +                             range, device_private_entry_to_pfn(entry));

The range parameter can stay on the first line..
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