Commit 127276c6 authored Apr 08, 2018 by Ming Lei Committed by Jens Axboe Apr 10, 2018

blk-mq: reimplement blk_mq_hw_queue_mapped



Now the actual meaning of queue mapped is that if there is any online
CPU mapped to this hctx, so implement blk_mq_hw_queue_mapped() in this
way.

Cc: Stefan Haberland <sth@linux.vnet.ibm.com>
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent efea8450

block/blk-mq.h

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -181,7 +181,7 @@ static inline bool blk_mq_hctx_stopped(struct blk_mq_hw_ctx *hctx)

	static inline bool blk_mq_hw_queue_mapped(struct blk_mq_hw_ctx *hctx)		static inline bool blk_mq_hw_queue_mapped(struct blk_mq_hw_ctx *hctx)
	{		{
	return hctx->nr_ctx && hctx->tags;		return cpumask_first_and(hctx->cpumask, cpu_online_mask) < nr_cpu_ids;
	}		}

	void blk_mq_in_flight(struct request_queue q, struct hd_struct part,		void blk_mq_in_flight(struct request_queue q, struct hd_struct part,

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