Commit 668a8990 authored by Kirill A. Shutemov's avatar Kirill A. Shutemov Committed by Andrew Morton
Browse files

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: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 934487e9

mm/page_reporting.c

+1 −1
Original line number Diff line number Diff line
@@ -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;