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From:   Miklos Szeredi <miklos@szeredi.hu>
Date:   Fri, 3 Apr 2020 13:38:13 +0200
Message-ID: <CAJfpeguQAw+Mgc8QBNd+h3KV8=Y-SOGT7TB_N_54wa8MCoOSzg@mail.gmail.com>
Subject: Re: Upcoming: Notifications, FS notifications and fsinfo()
To:     Lennart Poettering <mzxreary@0pointer.de>
Cc:     Ian Kent <raven@themaw.net>, David Howells <dhowells@redhat.com>,
        Christian Brauner <christian.brauner@ubuntu.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Al Viro <viro@zeniv.linux.org.uk>, dray@redhat.com,
        Karel Zak <kzak@redhat.com>,
        Miklos Szeredi <mszeredi@redhat.com>,
        Steven Whitehouse <swhiteho@redhat.com>,
        Jeff Layton <jlayton@redhat.com>, andres@anarazel.de,
        keyrings@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        linux-kernel@vger.kernel.org, Aleksa Sarai <cyphar@cyphar.com>
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On Fri, Apr 3, 2020 at 1:11 PM Lennart Poettering <mzxreary@0pointer.de> wrote:
>
> On Fr, 03.04.20 09:44, Ian Kent (raven@themaw.net) wrote:
>
> > > Currently the only way to find the mount id from a path is by parsing
> > > /proc/self/fdinfo/$fd.  It is trivial, however, to extend statx(2) to
> > > return it directly from a path.   Also the mount notification queue
> > > that David implemented contains the mount ID of the changed mount.
>
> I would love to have the mount ID exposed via statx().

Here's a patch.

Thanks,
Miklos

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