From: Liam R. Howlett <Liam.Howlett@Oracle.com>
Date: Wed, 13 Mar 2019 15:56:15 +0000 (-0400)
Subject: maple_tree: Fix range add to empty tree.
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=eb2694b1caa90e34b6c1740f591f9d056f7e1626;p=users%2Fjedix%2Flinux-maple.git

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 8a53c362b5617..f3d02e4781226 100644
--- 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))