block: include 'none' for initial elv_iosched_show call
This makes the printing order of the io schedulers consistent, and removes a redundant q->elevator check. Signed-off-by: Jinlong Chen <nickyc975@zju.edu.cn> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/bdd7083ed4f232e3285f39081e3c5f30b20b8da2.1669736350.git.nickyc975@zju.edu.cnSigned-off-by: Jens Axboe <axboe@kernel.dk>
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