linux-kernel - Re: [PATCH] ovl: create UUIDs for file systems that do not set the superblock UUID

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Message-ID: <20191107071843.GN10409@kadam>
Date:   Thu, 7 Nov 2019 10:18:43 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Amir Goldstein <amir73il@...il.com>
Cc:     Colin King <colin.king@...onical.com>,
        Miklos Szeredi <miklos@...redi.hu>,
        overlayfs <linux-unionfs@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ovl: create UUIDs for file systems that do not set the
 superblock UUID

On Thu, Nov 07, 2019 at 09:08:44AM +0200, Amir Goldstein wrote:
> diff --git a/fs/overlayfs/ovl_entry.h b/fs/overlayfs/ovl_entry.h
> index a8279280e88d..a0227c31fe17 100644
> --- a/fs/overlayfs/ovl_entry.h
> +++ b/fs/overlayfs/ovl_entry.h
> @@ -22,6 +22,8 @@ struct ovl_config {
>  struct ovl_sb {
>  	struct super_block *sb;
>  	dev_t pseudo_dev;
> +	/* Unusable (conflicting) uuid */
> +	bool nouuid;

Could we name this ignore_uuid, skip_uuid or bad_uuid or something?
Otherwise we end up with double negatives.

regards,
dan carpenter