Commit 4048774e authored by Ye Liu's avatar Ye Liu Committed by Andrew Morton
Browse files

mm/debug_page_alloc: improve error message for invalid guardpage minorder 

When an invalid debug_guardpage_minorder value is provided, include the
user input in the error message.  This helps users and developers diagnose
configuration issues more easily.

No functional change.

Link: https://lkml.kernel.org/r/20250427100442.958352-3-ye.liu@linux.dev


Signed-off-by: default avatarYe Liu <liuye@kylinos.cn>
Acked-by: default avatarDavid Hildenbrand <david@redhat.com>
Reviewed-by: default avatarAnshuman Khandual <anshuman.khandual@arm.com>
Acked-by: default avatarMike Rapoport (Microsoft) <rppt@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent b94bff76

mm/debug_page_alloc.c

+1 −1
Original line number Diff line number Diff line
@@ -23,7 +23,7 @@ static int __init debug_guardpage_minorder_setup(char *buf) 
	unsigned long res;



	if (kstrtoul(buf, 10, &res) < 0 ||  res > MAX_PAGE_ORDER / 2) {

		pr_err("Bad debug_guardpage_minorder value\n");

		pr_err("Bad debug_guardpage_minorder value: %s\n", buf);

		return 0;

	}

	_debug_guardpage_minorder = res;