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由 Jens Axboe 提交于
We don't want to idle in AS/CFQ if the device doesn't have a seek penalty. So add a QUEUE_FLAG_NONROT to indicate a non-rotational device, low level drivers should set this flag upon discovery of an SSD or similar device type. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
a68bbddb