It is possible to iterate over the metadata of full non-leaf nodes when
operating in non-alloc mode.
Signed-off-by: Liam R. Howlett <Liam.Howlett@xxxxxxxxxx>
---
lib/maple_tree.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index 80622741c6b8..a1035963ae0d 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -5429,11 +5429,15 @@ static void mt_destroy_walk(struct maple_enode *enode, unsigned char ma_flags,
goto start_slots_free;
type = mte_node_type(mas.node);
slots = ma_slots(mte_to_node(mas.node), type);
- if ((offset < mt_slots[type]) && (slots[offset])) {
- struct maple_enode *parent = mas.node;
+ if ((offset < mt_slots[type])) {
+ struct maple_enode *next = slots[offset];
- mas.node = mas_slot_locked(&mas, slots, offset);
- slots = mas_destroy_descend(&mas, parent, offset);
+ if (mte_node_type(next) && mte_to_node(next)) {
+ struct maple_enode *parent = mas.node;
+
+ mas.node = mas_slot_locked(&mas, slots, offset);
+ slots = mas_destroy_descend(&mas, parent, offset);
+ }
}
node = mas_mn(&mas);
} while (start != mas.node);
--
2.35.1
