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Date: Wed, 3 Oct 2018 05:55:20 -0700
From: Christoph Hellwig <hch@infradead.org>
To: Theodore Ts'o <tytso@mit.edu>
Cc: Ext4 Developers List <linux-ext4@vger.kernel.org>,
        stable@kernel.org
Subject: Re: [PATCH] ext4: fix EXT4_IOC_SWAP_BOOT
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References: <20181002233808.16118-1-tytso@mit.edu>
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On Tue, Oct 02, 2018 at 07:38:08PM -0400, Theodore Ts'o wrote:
> The code EXT4_IOC_SWAP_BOOT ioctl hasn't been updated in a while, and
> it's a bit broken with respect to more modern ext4 kernels, especially
> metadata checksums.

Do you have any reports of anyone but sysbot actually using it?
Maybe it is a better idea to drop it unless it also gets coverage
in xfstests?