From ad500fb2d11b3739dcbc17a31976828b9161ecf5 Mon Sep 17 00:00:00 2001 From: Peng Zhang Date: Sun, 29 Jan 2023 17:00:33 +0800 Subject: memblock: Make a boundary tighter in memblock_add_range(). When type->cnt * 2 + 1 is less than or equal to type->max, there is enough empty regions to insert. Signed-off-by: Peng Zhang Link: https://lore.kernel.org/r/20230129090034.12310-2-zhangpeng.00@bytedance.com Signed-off-by: Mike Rapoport (IBM) --- mm/memblock.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'mm/memblock.c') diff --git a/mm/memblock.c b/mm/memblock.c index 685e30e6d27c..836eb71ea3ea 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -601,11 +601,11 @@ static int __init_memblock memblock_add_range(struct memblock_type *type, /* * The worst case is when new range overlaps all existing regions, * then we'll need type->cnt + 1 empty regions in @type. So if - * type->cnt * 2 + 1 is less than type->max, we know + * type->cnt * 2 + 1 is less than or equal to type->max, we know * that there is enough empty regions in @type, and we can insert * regions directly. */ - if (type->cnt * 2 + 1 < type->max) + if (type->cnt * 2 + 1 <= type->max) insert = true; repeat: -- cgit v1.2.3-58-ga151