linux-kernel - Re: [PATCH 10/18] fsinfo: Provide notification overrun handling support [ver #21]

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Message-ID: <CAJfpegs1NLaamFA12f=EJRN4B3_iC+Uzi2NQKTV-fBSypcufLQ@mail.gmail.com>
Date:   Wed, 5 Aug 2020 09:45:52 +0200
From:   Miklos Szeredi <miklos@...redi.hu>
To:     Ian Kent <raven@...maw.net>
Cc:     David Howells <dhowells@...hat.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        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 10/18] fsinfo: Provide notification overrun handling
 support [ver #21]

On Wed, Aug 5, 2020 at 4:46 AM Ian Kent <raven@...maw.net> wrote:
>

> Coming back to an actual use case.
>
> What I said above is one aspect but, since I'm looking at this right
> now with systemd, and I do have the legacy code to fall back to, the
> "just reset everything" suggestion does make sense.
>
> But I'm struggling to see how I can identify notification buffer
> overrun in libmount, and overrun is just one possibility for lost
> notifications, so I like the idea that, as a library user, I can
> work out that I need to take action based on what I have in the
> notifications themselves.

Hmm, what's the other possibility for lost notifications?

Thanks,
Miklos