[PATCH 04/11] btrfs: Suppress the message about missing filesystem

[Qu Wenruo]

On 2021/8/19 上午11:40, Simon Glass wrote:
> This message comes up a lot when scanning filesystems. It suggests to the
> user that there is some sort of error, but in fact there is no reason to
> expect that a particular partition has a btrfs filesystem. Other
> filesystems don't print this error.
>
> Turn it into a debug message.
>
> Signed-off-by: Simon Glass <sjg at chromium.org>

Reviewed-by: Qu Wenruo <wqu at suse.com>

Thanks,
Qu
> ---
>
>   fs/btrfs/disk-io.c | 8 ++++++--
>   1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
> index 349411c3ccd..1b69346e231 100644
> --- a/fs/btrfs/disk-io.c
> +++ b/fs/btrfs/disk-io.c
> @@ -886,7 +886,11 @@ static int btrfs_scan_fs_devices(struct blk_desc *desc,
>
>   	ret = btrfs_scan_one_device(desc, part, fs_devices, &total_devs);
>   	if (ret) {
> -		fprintf(stderr, "No valid Btrfs found\n");
> +		/*
> +		 * Avoid showing this when probing for a possible Btrfs
> +		 *
> +		 * fprintf(stderr, "No valid Btrfs found\n");
> +		 */
>   		return ret;
>   	}
>   	return 0;
> @@ -975,7 +979,7 @@ struct btrfs_fs_info *open_ctree_fs_info(struct blk_desc *desc,
>   	disk_super = fs_info->super_copy;
>   	ret = btrfs_read_dev_super(desc, part, disk_super);
>   	if (ret) {
> -		printk("No valid btrfs found\n");
> +		debug("No valid btrfs found\n");
>   		goto out_devices;
>   	}
>
>