Re: [PATCH RFC 06/35] mm/page_alloc: reject unreasonable folio/compound page sizes in alloc_contig_range_noprof()

Zi Yan
2025-08-21T23:17:11Z

On 21 Aug 2025, at 16:06, David Hildenbrand wrote:

> Let's reject them early, which in turn makes folio_alloc_gigantic() reject
> them properly.
>
> To avoid converting from order to nr_pages, let's just add MAX_FOLIO_ORDER
> and calculate MAX_FOLIO_NR_PAGES based on that.
>
> Signed-off-by: David Hildenbrand <david@redhat.com>
> ---
> include/linux/mm.h | 6 ++++--
> mm/page_alloc.c | 5 ++++-
> 2 files changed, 8 insertions(+), 3 deletions(-)
>

LGTM. Reviewed-by: Zi Yan <ziy@nvidia.com>

Best Regards,
Yan, Zi