[CRIU] [RFC PATCH 2/7] lazy-pages: make uffd_{copy, zero} return 0 on success

[Pavel Emelyanov]

On 11/14/2016 06:37 PM, Mike Rapoport wrote:
> In early days of uffd.c return value from uffd_copy was used to count
> transferred pages. Since this is not the case anymore we can use 0 as
> success.
> 
> Signed-off-by: Mike Rapoport <rppt at linux.vnet.ibm.com>
> ---
>  criu/uffd.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/criu/uffd.c b/criu/uffd.c
> index 3eddf85..73ae09e 100644
> --- a/criu/uffd.c
> +++ b/criu/uffd.c
> @@ -543,7 +543,7 @@ static int uffd_copy(struct lazy_pages_info *lpi, __u64 address, int nr_pages)

There's no uffd_copy() in current criu-dev. What patch is missing in it?

>  
>  	lpi->copied_pages += nr_pages;
>  
> -	return uffdio_copy.copy;
> +	return 0;
>  }
>  
>  static int uffd_zero(struct lazy_pages_info *lpi, __u64 address, int nr_pages)
> @@ -565,7 +565,7 @@ static int uffd_zero(struct lazy_pages_info *lpi, __u64 address, int nr_pages)
>  		return -1;
>  	}
>  
> -	return len;
> +	return 0;
>  }
>  
>  static int uffd_handle_pages(struct lazy_pages_info *lpi, __u64 address, int nr)
>