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da562d92e6
Introduce the helper function bdev_rot() to test if a block device is a rotational one. The existing function bdev_nonrot() which tests for the opposite condition is redefined using this new helper. This avoids the double negation (operator and name) that appears when testing if a block device is a rotational device, thus making the code a little easier to read. Call sites of bdev_nonrot() in the block layer are updated to use this new helper. Remaining users in other subsystems are left unchanged for now. Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>