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由 Aaron Carroll 提交于
Deadline currently only batches sector-contiguous requests, so except for a few circumstances (e.g. requests in a single direction), it is essentially first come first served. This is bad for throughput, so change it to CSCAN, which means requests in a batch do not need to be sequential and are issued in increasing sector order. Signed-off-by: NAaron Carroll <aaronc@gelato.unsw.edu.au> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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