Re: [PATCH] mm: drop stale MAX_ORDER references

[Kiryl Shutsemau <kirill@shutemov.name>]

On Thu, Aug 20, 2026 at 09:52:03AM -0400, Zi Yan wrote:
> On 20 Aug 2026, at 9:27, Kiryl Shutsemau wrote:
> 
> > On Tue, Aug 18, 2026 at 08:24:08PM +0800, Qi Xi wrote:
> >> The treewide rename in commit 5e0a760b4441 ("mm, treewide: rename
> >> MAX_ORDER to MAX_PAGE_ORDER") left a few spots still using the old
> >> name:
> >>
> >>   - two comments in include/net/mana/mana.h and mm/page_alloc.c;
> >>   - the gdb helper scripts/gdb/linux/mm.py, where self.MAX_ORDER is
> >>     a local mirror of the kernel's MAX_ORDER define.
> >>
> >> Rename the leftover instances to MAX_PAGE_ORDER so the tree is
> >> consistent.
> >>
> >> No functional changes.
> >>
> >> Signed-off-by: Qi Xi <xiqi2@huawei.com>
> >> ---
> >>  include/net/mana/mana.h | 4 ++--
> >>  mm/page_alloc.c         | 2 +-
> >>  scripts/gdb/linux/mm.py | 8 ++++----
> >>  3 files changed, 7 insertions(+), 7 deletions(-)
> >>
> >> diff --git a/include/net/mana/mana.h b/include/net/mana/mana.h
> >> index 04acb6791dbd..1d5bed71d6a7 100644
> >> --- a/include/net/mana/mana.h
> >> +++ b/include/net/mana/mana.h
> >> @@ -40,8 +40,8 @@ enum TRI_STATE {
> >>  #define COMP_ENTRY_SIZE 64
> >>
> >>  /* This Max value for RX buffers is derived from __alloc_page()'s max page
> >> - * allocation calculation. It allows maximum 2^(MAX_ORDER -1) pages. RX buffer
> >> - * size beyond this value gets rejected by __alloc_page() call.
> >> + * allocation calculation. It allows maximum 2^(MAX_PAGE_ORDER -1) pages. RX
> >
> > Should it reference MAX_ORDER_NR_PAGES instead?
> 
> It is fixed in v2[1].

It is not :)

My point is that 2^MAX_PAGE_ORDER is MAX_ORDER_NR_PAGES.

But v2 is good enough.

-- 
  Kiryl Shutsemau / Kirill A. Shutemov