'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]
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))
--
2.7.4
