From: Liam R. Howlett <Liam.Howlett@Oracle.com>
Date: Wed, 11 Nov 2020 18:27:54 +0000 (-0500)
Subject: maple_tree: When mas_walk() is called in mas->node == MAS_NONE, reset to MAS_START
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=e7ea245c414c3fc6dbea4dffad55463ae113755a;p=users%2Fjedix%2Flinux-maple.git

maple_tree: When mas_walk() is called in mas->node == MAS_NONE, reset to MAS_START

Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---

diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index 97dd49bfcb89..c2a6c9cfd28c 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -4018,6 +4018,9 @@ void *mas_walk(struct ma_state *mas)
 	unsigned long range_min, range_max;
 	unsigned long index = mas->index;
 
+	if (mas_is_none(mas))
+		mas->node = MAS_START;
+
 	_mas_walk(mas, &range_min, &range_max);
 retry:
 	if (mas_dead_node(mas, index))