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blk-mq: reimplement blk_mq_hw_queue_mapped

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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 <[email protected]>
Tested-by: Christian Borntraeger <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Reviewed-by: Sagi Grimberg <[email protected]>
Signed-off-by: Ming Lei <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Ming Lei authored and Jens Axboe committed 2018-04-10 08:38:46 -06:00
1 parent efea8450c3
commit 127276c6ce
1 file changed
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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)
{
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,