linux-kernel - Re: [PATCH 01/18] fsinfo: Introduce a non-repeating system-unique superblock ID [ver #21]

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Date:   Tue, 4 Aug 2020 11:34:15 +0200
From:   Miklos Szeredi <miklos@...redi.hu>
To:     David Howells <dhowells@...hat.com>
Cc:     Al Viro <viro@...iv.linux.org.uk>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Ian Kent <raven@...maw.net>,
        Miklos Szeredi <mszeredi@...hat.com>,
        Christian Brauner <christian@...uner.io>,
        Jann Horn <jannh@...gle.com>,
        "Darrick J. Wong" <darrick.wong@...cle.com>,
        Karel Zak <kzak@...hat.com>, Jeff Layton <jlayton@...hat.com>,
        Linux API <linux-api@...r.kernel.org>,
        linux-fsdevel@...r.kernel.org,
        LSM <linux-security-module@...r.kernel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 01/18] fsinfo: Introduce a non-repeating system-unique
 superblock ID [ver #21]

On Mon, Aug 3, 2020 at 3:37 PM David Howells <dhowells@...hat.com> wrote:
>
> Introduce an (effectively) non-repeating system-unique superblock ID that
> can be used to determine that two objects are in the same superblock
> without needing to worry about the ID changing in the meantime (as is
> possible with device IDs).
>
> The counter could also be used to tag other features, such as mount
> objects.
>
> Signed-off-by: David Howells <dhowells@...hat.com>

Reviewed-by: Miklos Szeredi <mszeredi@...hat.com>