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

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