On Wed, 2019-07-24 at 22:07 +0800, YueHaibing wrote:
> 'new_start' is used in is_hugepage_only_range(),
> which do nothing in some arch. gcc will warning:
>
> mm/mmap.c: In function acct_stack_growth:
> mm/mmap.c:2311:16: warning: variable new_start set but not used [-Wunused-but-
> set-variable]
Nope. Convert them to inline instead.
>
> Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
> Signed-off-by: YueHaibing <yuehaibing@xxxxxxxxxx>
> ---
> mm/mmap.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/mm/mmap.c b/mm/mmap.c
> index e2dbed3..56c2a92 100644
> --- a/mm/mmap.c
> +++ b/mm/mmap.c
> @@ -2308,7 +2308,7 @@ static int acct_stack_growth(struct vm_area_struct *vma,
> unsigned long size, unsigned long grow)
> {
> struct mm_struct *mm = vma->vm_mm;
> - unsigned long new_start;
> + unsigned long __maybe_unused new_start;
>
> /* address space limit tests */
> if (!may_expand_vm(mm, vma->vm_flags, grow))
