From 7fbeaf33b8e1a5e69af42a77c78a6fcb3029f1ca Mon Sep 17 00:00:00 2001
From: Mateusz Guzik <mjg@FreeBSD.org>
Date: Sat, 29 May 2021 17:38:21 +0200
Subject: [PATCH] tmpfs: drop useless parent locking from
 tmpfs_dir_getdotdotdent

The id field is immutable until the node gets freed.
---
 sys/fs/tmpfs/tmpfs_subr.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/sys/fs/tmpfs/tmpfs_subr.c b/sys/fs/tmpfs/tmpfs_subr.c
index 8b75c58d69a..df5bc12047b 100644
--- a/sys/fs/tmpfs/tmpfs_subr.c
+++ b/sys/fs/tmpfs/tmpfs_subr.c
@@ -1436,10 +1436,7 @@ tmpfs_dir_getdotdotdent(struct tmpfs_mount *tm, struct tmpfs_node *node,
 	if (parent == NULL)
 		return (ENOENT);
 
-	TMPFS_NODE_LOCK(parent);
 	dent.d_fileno = parent->tn_id;
-	TMPFS_NODE_UNLOCK(parent);
-
 	dent.d_off = next;
 	dent.d_type = DT_DIR;
 	dent.d_namlen = 2;