From 7dae1467d72ae1f5c8f7be0f7444da23a457d98b Mon Sep 17 00:00:00 2001
From: Konstantin Belousov <kib@FreeBSD.org>
Date: Sat, 30 Dec 2023 01:22:40 +0200
Subject: [PATCH] nfsclient copy_file_range(): flush dst vnode data

Otherwise server-side copy makes the client cache inconsistent with the
server data.

Reported by:	asomers
PR:	276002
Reviewed by:	rmacklem
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D43250
---
 sys/fs/nfsclient/nfs_clvnops.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/fs/nfsclient/nfs_clvnops.c b/sys/fs/nfsclient/nfs_clvnops.c
index a690e988b4b..f86ecd53ad4 100644
--- a/sys/fs/nfsclient/nfs_clvnops.c
+++ b/sys/fs/nfsclient/nfs_clvnops.c
@@ -3956,7 +3956,7 @@ generic_copy:
 	if (error == 0)
 		error = ncl_flush(invp, MNT_WAIT, curthread, 1, 0);
 	if (error == 0)
-		error = ncl_flush(outvp, MNT_WAIT, curthread, 1, 0);
+		error = ncl_vinvalbuf(outvp, V_SAVE, curthread, 0);
 
 	/* Do the actual NFSv4.2 RPC. */
 	ret = ret2 = 0;