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authorJens Axboe <axboe@kernel.dk>2021-11-18 18:37:30 +0300
committerJens Axboe <axboe@kernel.dk>2021-12-16 20:54:36 +0300
commitd62cbcf62f2f4bf933d18113bcda45e18cc890f6 (patch)
tree704ad1b9cc7e1e1d01b9934a3dadafada67c3bb3 /block
parent62451a2b2e7ea17c4a547ada6a5deebf8787a27a (diff)
downloadlinux-d62cbcf62f2f4bf933d18113bcda45e18cc890f6.tar.xz
nvme: add support for mq_ops->queue_rqs()
This enables the block layer to send us a full plug list of requests that need submitting. The block layer guarantees that they all belong to the same queue, but we do have to check the hardware queue mapping for each request. If errors are encountered, leave them in the passed in list. Then the block layer will handle them individually. This is good for about a 4% improvement in peak performance, taking us from 9.6M to 10M IOPS/core. Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Keith Busch <kbusch@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
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