From 945bacdef5dc80a538061dd5599453f4191f4a23 Mon Sep 17 00:00:00 2001
From: Jelle van der Waa <jvanderwaa@redhat.com>
Date: Thu, 21 Mar 2024 12:10:51 +0100
Subject: [PATCH] btrfs-progs: convert missing device printf() to a warning()

To support JSON formatted output for `filesystem show` stdout can't
contain warnings, the warning macro prints to stderr.
---
 kernel-shared/volumes.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel-shared/volumes.c b/kernel-shared/volumes.c
index b21231efe8..93336841c5 100644
--- a/kernel-shared/volumes.c
+++ b/kernel-shared/volumes.c
@@ -2434,7 +2434,7 @@ static int read_one_chunk(struct btrfs_fs_info *fs_info, struct btrfs_key *key,
 							NULL);
 		if (!map->stripes[i].dev) {
 			map->stripes[i].dev = fill_missing_device(devid, uuid);
-			printf("warning, device %llu is missing\n",
+			warning("warning, device %llu is missing\n",
 			       (unsigned long long)devid);
 			list_add(&map->stripes[i].dev->dev_list,
 				 &fs_info->fs_devices->devices);