On Wed, 11 Feb 2015, Kirill A. Shutemov wrote:

> This is praparation to moving mm_populate()-related code out of
> mm/mlock.c.
> 

s/praparation/preparation/

> Signed-off-by: Kirill A. Shutemov <[email protected]>
> ---
>  mm/mlock.c | 11 +++++++----
>  1 file changed, 7 insertions(+), 4 deletions(-)
> 
> diff --git a/mm/mlock.c b/mm/mlock.c
> index c3ea18323034..0837fdb26047 100644
> --- a/mm/mlock.c
> +++ b/mm/mlock.c
> @@ -712,7 +712,6 @@ int __mm_populate(unsigned long start, unsigned long len, 
> int ignore_errors)
>                               ret = 0;
>                               continue;       /* continue at next VMA */
>                       }
> -                     ret = __mlock_posix_error_return(ret);
>                       break;
>               }
>               nend = nstart + ret * PAGE_SIZE;
> @@ -750,9 +749,13 @@ SYSCALL_DEFINE2(mlock, unsigned long, start, size_t, len)
>               error = do_mlock(start, len, 1);
>  
>       up_write(&current->mm->mmap_sem);
> -     if (!error)
> -             error = __mm_populate(start, len, 0);
> -     return error;
> +     if (error)
> +             return error;
> +
> +     error = __mm_populate(start, len, 0);
> +     if (error)
> +             return  __mlock_posix_error_return(error);

Extra space?

> +     return 0;
>  }
>  
>  SYSCALL_DEFINE2(munlock, unsigned long, start, size_t, len)
--
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