path: root/block
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authorMing Lei <ming.lei@redhat.com>2018-04-08 17:48:13 +0800
committerJens Axboe <axboe@kernel.dk>2018-04-10 08:38:46 -0600
commit127276c6ce5a30fcc806b7fe53015f4f89b62956 (patch)
tree7d503a3a1ecaa0c67fcd7c6e349b7845cfb0d9fa /block
parentefea8450c3d2d3918029b36f59ef612be57d91ae (diff)
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>
Diffstat (limited to 'block')
1 files changed, 1 insertions, 1 deletions
diff --git a/block/blk-mq.h b/block/blk-mq.h
index 88c558f71819..502af371b83b 100644
--- 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,