diff mbox series

[1/8] maple_tree: set the node limit when creating a new root node

Message ID 20230615130859.21858-2-zhangpeng.00@bytedance.com (mailing list archive)
State New
Headers show
Series Improve the validation for maple tree and some cleanup | expand

Commit Message

Peng Zhang June 15, 2023, 1:08 p.m. UTC 
Set the node limit of the root node so that the last pivot of all nodes
is the node limit (if the node is not full).

Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com>
---
 lib/maple_tree.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index 279b871f21a6..23202edb9f1e 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -3692,7 +3692,8 @@  static inline int mas_root_expand(struct ma_state *mas, void *entry)
 	mas->offset = slot;
 	pivots[slot] = mas->last;
 	if (mas->last != ULONG_MAX)
-		slot++;
+		pivots[++slot] = ULONG_MAX;
+
 	mas->depth = 1;
 	mas_set_height(mas);
 	ma_set_meta(node, maple_leaf_64, 0, slot);