From 9a671fe7ecbc5f6ca07d96869207720a37b088e4 Mon Sep 17 00:00:00 2001
From: Mateusz Guzik <mjguzik@gmail.com>
Date: Tue, 20 Sep 2022 02:17:27 +0200
Subject: [PATCH] FreeBSD: stop passing LK_INTERLOCK to VOP_LOCK

There is an ongoing effort to eliminate this feature.

Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Closes #13908
---
 module/os/freebsd/zfs/zfs_ctldir.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/module/os/freebsd/zfs/zfs_ctldir.c b/module/os/freebsd/zfs/zfs_ctldir.c
index 4b95b49dc..42bb7551e 100644
--- a/module/os/freebsd/zfs/zfs_ctldir.c
+++ b/module/os/freebsd/zfs/zfs_ctldir.c
@@ -977,12 +977,13 @@ zfsctl_snapdir_lookup(struct vop_lookup_args *ap)
 		 */
 		VI_LOCK(*vpp);
 		if (((*vpp)->v_iflag & VI_MOUNT) == 0) {
+			VI_UNLOCK(*vpp);
 			/*
 			 * Upgrade to exclusive lock in order to:
 			 * - avoid race conditions
 			 * - satisfy the contract of mount_snapshot()
 			 */
-			err = VOP_LOCK(*vpp, LK_TRYUPGRADE | LK_INTERLOCK);
+			err = VOP_LOCK(*vpp, LK_TRYUPGRADE);
 			if (err == 0)
 				break;
 		} else {