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From:   Khazhy Kumykov <khazhy@google.com>
Date:   Mon, 21 Mar 2022 16:36:02 -0700
Message-ID: <CACGdZY+3=Xraszi47K2e-Bx=3-d45=qKOgMrV3D1U3dbPjBTmg@mail.gmail.com>
Subject: Re: [PATCH RFC] nfsd: avoid recursive locking through fsnotify
To:     Trond Myklebust <trondmy@hammerspace.com>,
        "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>
Cc:     "jack@suse.cz" <jack@suse.cz>,
        "amir73il@gmail.com" <amir73il@gmail.com>,
        "bfields@fieldses.org" <bfields@fieldses.org>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>,
        "linux-nfs@vger.kernel.org" <linux-nfs@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "jlayton@kernel.org" <jlayton@kernel.org>,
        "chuck.lever@oracle.com" <chuck.lever@oracle.com>
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On Mon, Mar 21, 2022 at 3:50 PM Trond Myklebust <trondmy@hammerspace.com> wrote:
>
> As has already been reported, the problem was fixed in Linux 5.5 by the
> garbage collector rewrite, and so this is no longer an issue.
>
9542e6a643fc ("nfsd: Containerise filecache laundrette"), 36ebbdb96b69
("nfsd: cleanup nfsd_file_lru_dispose()") apply cleanly to 5.4.y for
me, which is still LTS. Since this should fix a real deadlock, would
it be appropriate to include them for the 5.4 stable?

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