diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 263145b27155cf18db8c08c4f7065be288f63d89..bd0ae3ec76ff82aecb9e28f414805e57912243bf 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -4738,6 +4738,12 @@ void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path,
 	int slot;
 	struct btrfs_map_token token;
 
+	if (path->slots[0] == 0) {
+		btrfs_cpu_key_to_disk(&disk_key, cpu_key);
+		fixup_low_keys(root, path, &disk_key, 1);
+	}
+	btrfs_unlock_up_safe(path, 1);
+
 	btrfs_init_map_token(&token);
 
 	leaf = path->nodes[0];
@@ -4798,12 +4804,6 @@ void setup_items_for_insert(struct btrfs_root *root, struct btrfs_path *path,
 	}
 
 	btrfs_set_header_nritems(leaf, nritems + nr);
-
-	if (slot == 0) {
-		btrfs_cpu_key_to_disk(&disk_key, cpu_key);
-		fixup_low_keys(root, path, &disk_key, 1);
-	}
-	btrfs_unlock_up_safe(path, 1);
 	btrfs_mark_buffer_dirty(leaf);
 
 	if (btrfs_leaf_free_space(root, leaf) < 0) {