Re: [PATCH v8 17/18] scsi: megaraid_sas: Added support for shared host tagset for cpuhotplug

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On Wed, 2020-11-11 at 17:27 +0800, Ming Lei wrote:
> Can this issue disappear by applying the following change?

This makes the system boot again as well.

> 
> diff --git a/block/blk-flush.c b/block/blk-flush.c
> index e32958f0b687..b1fe6176d77f 100644
> --- a/block/blk-flush.c
> +++ b/block/blk-flush.c
> @@ -469,9 +469,6 @@ struct blk_flush_queue *blk_alloc_flush_queue(int node,
> int cmd_size,
>  	INIT_LIST_HEAD(&fq->flush_queue[1]);
>  	INIT_LIST_HEAD(&fq->flush_data_in_flight);
>  
> -	lockdep_register_key(&fq->key);
> -	lockdep_set_class(&fq->mq_flush_lock, &fq->key);
> -
>  	return fq;
>  
>   fail_rq:
> @@ -486,7 +483,6 @@ void blk_free_flush_queue(struct blk_flush_queue *fq)
>  	if (!fq)
>  		return;
>  
> -	lockdep_unregister_key(&fq->key);
>  	kfree(fq->flush_rq);
>  	kfree(fq);
>  }
> 
> 
> Thanks, 
> Ming




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