Re: [PATCH] blk-mq: provide an explicit n:1 mapping for single queue devices
From: Jens Axboe <axboe@kernel.dk>
Date: 2017-07-26 20:40:50
On 07/26/2017 02:19 PM, Christoph Hellwig wrote:
This avoids having to deal with the nr_hw_queues = 1 case in the various queue mapping helpers by special casing it in the blk-mq core.
Why special case it at all? If ->map_queues() is properly written, the single queue case should just fall out naturally. I don't see why 1 should be any different than 2, 4, or N. -- Jens Axboe