Messages in this thread Patch in this message | | | Date | Sun, 6 Oct 2013 10:09:56 -0700 | From | Christoph Hellwig <> | Subject | [PATCH] blk-mq: fix blk_mq_start_stopped_hw_queues from irq context |
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The only caller of blk_mq_start_stopped_hw_queues is in irq context, leading to lockdep splat when it actually gets called. Fix this by deferring the hw queue run to workqueue context.
Signed-off-by: Christoph Hellwig <hch@lst.de>
diff --git a/block/blk-mq.c b/block/blk-mq.c index 2b85029..923e9e1 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -686,7 +686,8 @@ void blk_mq_start_stopped_hw_queues(struct request_queue *q) if (!test_bit(BLK_MQ_S_STOPPED, &hctx->state)) continue; - blk_mq_start_hw_queue(hctx); + clear_bit(BLK_MQ_S_STOPPED, &hctx->state); + blk_mq_run_hw_queue(hctx, true); } } EXPORT_SYMBOL(blk_mq_start_stopped_hw_queues);
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