From mboxrd@z Thu Jan  1 00:00:00 1970
From: Gabriel de Perthuis <g2p.code-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: [Please pull] make-bcache: prevent stray superblocks
Date: Sun, 01 Sep 2013 12:44:48 +0200
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Hello,
Here is a patch updating make-bcache to disallow stray superblocks,
so that it matches the stricter udev check.

- https://github.com/g2p/bcache-tools/commits
- https://github.com/g2p/bcache-tools/commit/master

>From the commit message:
Fail if the device has any leftover superblock or partition table label.

Add a --wipe-bcache flag to overwrite bcache superblocks and recommend
wipefs for non-bcache superblocks.

Once the device is safe to write, always zero immediately before the
bcache superblock.

Make sure errors go to stderr.  Use pkg-config.