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-rw-r--r--block/blk-mq.c21
1 files changed, 12 insertions, 9 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c
index b355b5957cd7..8b309e81ed0f 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -801,9 +801,18 @@ void blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx, bool async)
if (unlikely(test_bit(BLK_MQ_S_STOPPED, &hctx->state)))
return;
- if (!async && cpumask_test_cpu(smp_processor_id(), hctx->cpumask))
- __blk_mq_run_hw_queue(hctx);
- else if (hctx->queue->nr_hw_queues == 1)
+ if (!async) {
+ preempt_disable();
+ if (cpumask_test_cpu(smp_processor_id(), hctx->cpumask)) {
+ __blk_mq_run_hw_queue(hctx);
+ preempt_enable();
+ return;
+ }
+
+ preempt_enable();
+ }
+
+ if (hctx->queue->nr_hw_queues == 1)
kblockd_schedule_delayed_work(&hctx->run_work, 0);
else {
unsigned int cpu;
@@ -824,9 +833,7 @@ void blk_mq_run_queues(struct request_queue *q, bool async)
test_bit(BLK_MQ_S_STOPPED, &hctx->state))
continue;
- preempt_disable();
blk_mq_run_hw_queue(hctx, async);
- preempt_enable();
}
}
EXPORT_SYMBOL(blk_mq_run_queues);
@@ -853,9 +860,7 @@ void blk_mq_start_hw_queue(struct blk_mq_hw_ctx *hctx)
{
clear_bit(BLK_MQ_S_STOPPED, &hctx->state);
- preempt_disable();
blk_mq_run_hw_queue(hctx, false);
- preempt_enable();
}
EXPORT_SYMBOL(blk_mq_start_hw_queue);
@@ -880,9 +885,7 @@ void blk_mq_start_stopped_hw_queues(struct request_queue *q, bool async)
continue;
clear_bit(BLK_MQ_S_STOPPED, &hctx->state);
- preempt_disable();
blk_mq_run_hw_queue(hctx, async);
- preempt_enable();
}
}
EXPORT_SYMBOL(blk_mq_start_stopped_hw_queues);