On Wed, 12 Jul 2023 at 16:25, Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> wrote: > > Introduce the two helpers for general use. > > Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> > --- > include/linux/mm.h | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/include/linux/mm.h b/include/linux/mm.h > index 1462cf15badf..0bbeb31ac750 100644 > --- a/include/linux/mm.h > +++ b/include/linux/mm.h > @@ -926,6 +926,18 @@ static inline bool vma_is_anonymous(struct vm_area_struct *vma) > return !vma->vm_ops; > } > > +static inline bool vma_is_heap(struct vm_area_struct *vma) What about declaring the parameters const to document in code these functions do not modify any state, and allow callers to pass pointers to const? > +{ > + return vma->vm_start <= vma->vm_mm->brk && > + vma->vm_end >= vma->vm_mm->start_brk; > +} > + > +static inline bool vma_is_stack(struct vm_area_struct *vma) > +{ > + return vma->vm_start <= vma->vm_mm->start_stack && > + vma->vm_end >= vma->vm_mm->start_stack; > +} > + > static inline bool vma_is_temporary_stack(struct vm_area_struct *vma) > { > int maybe_stack = vma->vm_flags & (VM_GROWSDOWN | VM_GROWSUP); > -- > 2.41.0 >