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Date:   Tue, 20 Dec 2022 15:43:57 +0200
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Subject: Re: [PATCH] nfsd: Ensure knfsd shuts down when the "nfsd" pseudofs is
 unmounted
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To:     trondmy@kernel.org, "J. Bruce Fields" <bfields@redhat.com>,
        Chuck Lever <chuck.lever@oracle.com>
Cc:     linux-nfs@vger.kernel.org
References: <20210313210847.569041-1-trondmy@kernel.org>
From:   Nikos Tsironis <ntsironis@arrikto.com>
In-Reply-To: <20210313210847.569041-1-trondmy@kernel.org>
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On 3/13/21 23:08, trondmy@kernel.org wrote:
> From: Trond Myklebust <trond.myklebust@hammerspace.com>
> 
> In order to ensure that knfsd threads don't linger once the nfsd
> pseudofs is unmounted (e.g. when the container is killed) we let
> nfsd_umount() shut down those threads and wait for them to exit.
> 
> This also should ensure that we don't need to do a kernel mount of
> the pseudofs, since the thread lifetime is now limited by the
> lifetime of the filesystem.
> 
> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
> ---

Hello,

This patch was merged in kernel v5.13, but the issue exists in older
kernels too.

Is there a reason that the patch was never backported to older stable
kernels?

Thanks,
Nikos.