[PATCH 0/6] treewide: remove unnecessary invalid range checks in memblock iteration loops

[Sang-Heon Jeon]

On Fri, Jun 26, 2026 at 5:23 PM Mike Rapoport <rppt at kernel.org> wrote:
>
> On Sun, Jun 21, 2026 at 11:59:10PM +0900, Sang-Heon Jeon wrote:
> > The memblock API guarantees that for_each_mem_range() and
> > for_each_mem_pfn_range() never return an invalid range, meaning start is
> > always less than end.
> >
> > Several memblock callers still have unnecessary invalid range checks in
> > their loop bodies, so remove them.
> >
> > Sang-Heon Jeon (6):
> >   arm64: mm: remove unreachable invalid range check in
> >     kasan_init_shadow()
> >   LoongArch: remove unreachable invalid range check in kasan_init()
> >   riscv: remove unreachable invalid range check in
> >     create_linear_mapping_page_table()
> >   riscv: remove unreachable invalid range check in kasan_init()
> >   mm: remove unnecessary empty range check in
> >     early_calculate_totalpages()
> >   mm/hugetlb: remove unnecessary empty range check in
> >     hugetlb_bootmem_set_nodes()
>
> I queued this for inclusion into memblock tree.

Thank you, Mike.

Could you please review and queue this patch [1] as well? It does the
same kind of clean up, I just missed it at the time.

[1] https://lore.kernel.org/all/20260626032902.703944-1-ekffu200098@gmail.com/

> >  arch/arm64/mm/kasan_init.c     | 3 ---
> >  arch/loongarch/mm/kasan_init.c | 3 ---
> >  arch/riscv/mm/init.c           | 2 --
> >  arch/riscv/mm/kasan_init.c     | 3 ---
> >  mm/hugetlb.c                   | 3 +--
> >  mm/mm_init.c                   | 3 +--
> >  6 files changed, 2 insertions(+), 15 deletions(-)
> >
> > --
> > 2.43.0
> >
>
> --
> Sincerely yours,
> Mike.

Best Regards,
Sang-Heon Jeon