[PATCH v4 09/10] maple_tree: Preserve the tree attributes when destroying maple tree

[Peng Zhang]

When destroying maple tree, preserve its attributes and then turn it
into an empty tree. This allows it to be reused without needing to be
reinitialized.

Signed-off-by: Peng Zhang <zhangpeng.00 at bytedance.com>
---
 lib/maple_tree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index d5544382ff15..1745242092fb 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -6775,7 +6775,7 @@ void __mt_destroy(struct maple_tree *mt)
 	if (xa_is_node(root))
 		mte_destroy_walk(root, mt);
 
-	mt->ma_flags = 0;
+	mt->ma_flags = mt_attr(mt);
 }
 EXPORT_SYMBOL_GPL(__mt_destroy);
 
-- 
2.20.1