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Subject[PATCH 1/3] memblock: Make a boundary tighter in memblock_add_range().
Date
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 <zhangpeng.00@bytedance.com>
---
mm/memblock.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/memblock.c b/mm/memblock.c
index 511d4783dcf1..6eedcfc5dcc1 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:
--
2.20.1
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