Re: [RFC PATCH] fanotify: notify on mount attach and detach

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To: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Subject: Re: [RFC PATCH] fanotify: notify on mount attach and detach
From: Miklos Szeredi <miklos@xxxxxxxxxx>
Date: Fri, 29 Nov 2024 08:10:13 +0100
Cc: Miklos Szeredi <mszeredi@xxxxxxxxxx>, linux-fsdevel@xxxxxxxxxxxxxxx, Jan Kara <jack@xxxxxxx>, Amir Goldstein <amir73il@xxxxxxxxx>, Karel Zak <kzak@xxxxxxxxxx>, Lennart Poettering <lennart@xxxxxxxxxxxxxx>, Ian Kent <raven@xxxxxxxxxx>, Christian Brauner <brauner@xxxxxxxxxx>
In-reply-to: <20241128195738.GG3387508@ZenIV>

On Thu, 28 Nov 2024 at 20:57, Al Viro <viro@xxxxxxxxxxxxxxxxxx> wrote:

> So... why is it not a DoS?

Certainly looks like one.  I intentionally didn't give too much
thought to the hook placement to be able to send out a quick proof of
concept patch.   Will move them outside of mount_lock.

Thanks,
Mikos

References:
- [RFC PATCH] fanotify: notify on mount attach and detach
  - From: Miklos Szeredi
- Re: [RFC PATCH] fanotify: notify on mount attach and detach
  - From: Al Viro

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