linux-kernel - [PATCH v2 21/36] maple_tree: mas_start() reset depth on dead node

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Date:   Fri,  5 May 2023 13:41:49 -0400
From:   "Liam R. Howlett" <Liam.Howlett@...cle.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     maple-tree@...ts.infradead.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org,
        "Liam R. Howlett" <Liam.Howlett@...cle.com>,
        Peng Zhang <zhangpeng.00@...edance.com>
Subject: [PATCH v2 21/36] maple_tree: mas_start() reset depth on dead node

When a dead node is detected, the depth has already been set to 1 so
reset it to 0.

Signed-off-by: Liam R. Howlett <Liam.Howlett@...cle.com>
Reviewed-by: Peng Zhang <zhangpeng.00@...edance.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 b3e5ae43ff8ff..e233f41ed4da2 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -1396,9 +1396,9 @@ static inline struct maple_enode *mas_start(struct ma_state *mas)
 
 		mas->min = 0;
 		mas->max = ULONG_MAX;
-		mas->depth = 0;
 
 retry:
+		mas->depth = 0;
 		root = mas_root(mas);
 		/* Tree with nodes */
 		if (likely(xa_is_node(root))) {
-- 
2.39.2