dm-zoned:: prevent non power of 2 zone sizes to be used

Today dm-zoned relies on the assumption that you have a zone size
with a power of 2. Even though the block layer today enforces this
requirement, these devices do exist and so provide a stop-gap measure
to ensure these devices cannot be used by mistake

Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
1 file changed