maple_tree: Fix range add to empty tree.

When adding to an empty tree, use the encoded node to set the pivot.

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

diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index 8a53c362b56176e9342da4067846e952e6472472..f3d02e47812269363a29b3f4a04ee8bd0a31d24c 100644 (file)
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -1211,7 +1211,7 @@ static inline void ma_root_expand(struct ma_state *ms, void *entry)
        /* Assign the old entry to slot 0, or set it to null. */
        ma_set_rcu_slot(mn, 0, r_entry);
        if (!r_entry)
-               ma_set_pivot(mn, 0, ms->index - 1);
+               ma_set_pivot(ms->node, 0, ms->index - 1);
 
        _ma_insert(ms, entry, 1);
        if (mas_is_err(ms))