From: Liam R. Howlett <Liam.Howlett@Oracle.com>
Date: Fri, 17 Jul 2020 21:26:32 +0000 (-0400)
Subject: maple_tree: mas_prev_slot change
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=e48d0470c6620f379f2353cddcb2f4689f24d67c;p=users%2Fjedix%2Flinux-maple.git

maple_tree: mas_prev_slot change

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

diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index 515d4f7de278..ed9870742617 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -3029,7 +3029,6 @@ static inline void mas_prev_slot(struct ma_state *mas, unsigned long min)
 	if (mte_is_root(mas->node))
 		goto no_entry;
 
-	// Walk up.
 	while (1) {
 		slot = mte_parent_slot(mas->node);
 		mas_ascend(mas);
@@ -3050,9 +3049,6 @@ walk_down:
 			mas->min = mas_get_safe_pivot(mas, slot - 1);
 		mas->max = mas_get_safe_pivot(mas, slot);
 		mas->node = mas_get_rcu_slot(mas, slot);
-		if (mt_is_empty(mas->node))
-			goto done;
-
 		if (mte_is_leaf(mas->node))
 			goto done;