From: Liam R. Howlett <Liam.Howlett@oracle.com>
Date: Thu, 25 Sep 2025 03:10:09 +0000 (-0400)
Subject: dst_setup(): Add fast path
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=6cce53ef579853c96e8f07b865779799d37d9158;p=users%2Fjedix%2Flinux-maple.git

dst_setup(): Add fast path

If nodes will fit, the just go with it and fix the null terminated nodes in cp_data_write()

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

diff --git a/lib/maple_tree.c b/lib/maple_tree.c
index 1bf4e7524daf..4fbb38bfa4c0 100644
--- a/lib/maple_tree.c
+++ b/lib/maple_tree.c
@@ -2589,7 +2589,10 @@ void dst_setup(struct maple_copy *cp, struct ma_state *mas, enum maple_type mt)
 
 	cp->split = (cp->data - 1) / 2;
 	cp->d_count = 2;
-	if (cp->data <= mt_slots[mt] * 2) {
+	if (cp->data < mt_slots[mt] * 2)
+		goto node_setup;
+
+	if (cp->data == mt_slots[mt] * 2) {
 		unsigned char off;
 		unsigned char s;