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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>
This commit is contained in:
Ming Lei 2018-04-08 17:48:13 +08:00 committed by Jens Axboe
parent efea8450c3
commit 127276c6ce
1 changed files with 1 additions and 1 deletions
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2
block/blk-mq.h
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@ -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,