linux-kernel - Re: [resend PATCH v2 0/2] virtiofs submounts that are still in use forgotten by shrinker

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Message-ID: <97163cdf-ab2c-4fb8-abf2-738a4680c47f@fastmail.fm>
Date:   Tue, 3 Oct 2023 00:18:42 +0200
From:   Bernd Schubert <bernd.schubert@...tmail.fm>
To:     Krister Johansen <kjlx@...pleofstupid.com>,
        Miklos Szeredi <miklos@...redi.hu>,
        linux-fsdevel@...r.kernel.org
Cc:     Miklos Szeredi <mszeredi@...hat.com>, linux-kernel@...r.kernel.org,
        German Maglione <gmaglione@...hat.com>,
        Greg Kurz <groug@...d.org>, Max Reitz <mreitz@...hat.com>
Subject: Re: [resend PATCH v2 0/2] virtiofs submounts that are still in use
 forgotten by shrinker



On 10/2/23 17:24, Krister Johansen wrote:
> Hi,
> I recently ran into a situation where a virtiofs client began
> encountering EBADF after the client / guest system had an OOM.  After
> reproducing the issue and debugging, the problem is caused by a
> virtiofsd submount having the nodeid of its root dentry fogotten.  This
> occurs because it borrows the reference for this dentry from the parent
> that is passed into the function.


Sorry, I didn't forget you, just didn't manage to review the 2nd version 
yet. Will definitely do this week.
Please also note that there will be merge conflicts with atomic open 
patches from Dharmendra/me. Although probably not too difficult to resolve.


Thanks,
Bernd