On 6/29/21 9:49 AM, Ming Lei wrote:
All the 4 host drivers don't use managed irq for completing request, so
it is correct to pass the flag to blk-mq.
Secondly with this flag, blk-mq will help us dispatch connect request
allocated via blk_mq_alloc_request_hctx() to driver even though all
CPU in the specified hctx's cpumask are offline.
How is this supposed to work?
To my understanding, only cpus in the hctx cpumask are eligible to send
I/O. So if all of these CPUs are offline, who exactly is submitting I/O?
More to the point, which CPU will be submitting the connect request?
Cheers,
Hannes
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