Re: [PATCH 0/2] small optimization for accessing queue map

From: Jens Axboe
Date: Fri Feb 01 2019 - 10:34:53 EST

On 1/24/19 3:25 AM, Jianchao Wang wrote:
> Hi Jens
> These two patches are small optimization for accessing the queue mapping
> in hot path. It saves the queue mapping results into blk_mq_ctx directly,
> then we needn't do the complicated bounce on queue_hw_ctx[] map[] and
> mq_map[].

Doing some targeted testing, the cycles wasted on the double indirect
are reclaimed with this. I've applied both for 5.1, thanks.

Jens Axboe