[PATCH 4/4] nvme: add support for mq_ops->queue_rqs()

[Hannes Reinecke]

On 12/3/21 10:45 PM, Jens Axboe wrote:
> 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.
> 
> Signed-off-by: Jens Axboe <axboe at kernel.dk>
> ---
>   drivers/nvme/host/pci.c | 61 +++++++++++++++++++++++++++++++++++++++++
>   1 file changed, 61 insertions(+)
> 
Reviewed-by: Hannes Reinecke <hare at suse.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                Kernel Storage Architect
hare at suse.de                              +49 911 74053 688
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