From: Kirill A. Shutemov Date: Wed, 15 Mar 2023 11:31:30 +0000 (+0300) Subject: mm/page_reporting: fix MAX_ORDER usage in page_reporting_register() X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=668a89907c6b908c4a72ef22e70bbc95efca2000;p=linux.git mm/page_reporting: fix MAX_ORDER usage in page_reporting_register() MAX_ORDER is not inclusive: the maximum allocation order buddy allocator can deliver is MAX_ORDER-1. Fix MAX_ORDER usage in page_reporting_register(). Link: https://lkml.kernel.org/r/20230315113133.11326-8-kirill.shutemov@linux.intel.com Signed-off-by: Kirill A. Shutemov Cc: Alexander Duyck Signed-off-by: Andrew Morton --- diff --git a/mm/page_reporting.c b/mm/page_reporting.c index c65813a9dc78e..275b466de37b9 100644 --- a/mm/page_reporting.c +++ b/mm/page_reporting.c @@ -370,7 +370,7 @@ int page_reporting_register(struct page_reporting_dev_info *prdev) */ if (page_reporting_order == -1) { - if (prdev->order > 0 && prdev->order <= MAX_ORDER) + if (prdev->order > 0 && prdev->order < MAX_ORDER) page_reporting_order = prdev->order; else page_reporting_order = pageblock_order;