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Date:   Thu, 16 Apr 2020 09:52:41 +0200
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Christoph Hellwig <hch@lst.de>
Cc:     axboe@kernel.dk, yuyufen@huawei.com, tj@kernel.org, jack@suse.cz,
        bvanassche@acm.org, tytso@mit.edu, linux-block@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/8] bdi: add a ->dev_name field to struct
 backing_dev_info
Message-ID: <20200416075241.GB376871@kroah.com>
References: <20200416071519.807660-1-hch@lst.de>
 <20200416071519.807660-4-hch@lst.de>
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On Thu, Apr 16, 2020 at 09:15:14AM +0200, Christoph Hellwig wrote:
> Cache a copy of the name for the life time of the backing_dev_info
> structure so that we can reference it even after unregistering.
> 
> Fixes: 68f23b89067f ("memcg: fix a crash in wb_workfn when a device disappears")
> Reported-by: Yufen Yu <yuyufen@huawei.com>
> Signed-off-by: Christoph Hellwig <hch@lst.de>

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>