blk-mq: allow passing in an external queue mapping V2

Christoph Hellwig hch at lst.de
Thu Sep 1 01:45:09 PDT 2016


On Tue, Aug 30, 2016 at 07:28:24PM -0400, Keith Busch wrote:
> Before, each mq hardware queue would have 2 CPUs, now it's terribly
> unbalanced.

Hmm.  This wasn't supposed to change the cpu mapping, an indeed I saw
results like that horrible one before as well.  Let me dig into this
with my fake lower queue count device.



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