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 <[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]>
ambv · Apr 10, 2018 · 127276c · 127276c
1 parent efea845
commit 127276c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/block/blk-mq.h b/block/blk-mq.h
@@ -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,