linux-kernel - Re: [PATCH 1/1] null_blk: remove unused 'll_list' in 'nullb

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Date:   Mon, 24 Feb 2020 09:43:45 -0800
From:   dongli.zhang@...cle.com
To:     linux-block@...r.kernel.org
Cc:     axboe@...nel.dk, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] null_blk: remove unused 'll_list' in 'nullb_cmd'

nullb_cmd->list is no longer used as well. I would send v2.

Dongli Zhang

On 2/24/20 9:24 AM, Dongli Zhang wrote:
> The 'll_list' is no longer used since commit 3c395a969acc ("null_blk: set a
> separate timer for each command").
> 
> Signed-off-by: Dongli Zhang <dongli.zhang@...cle.com>
> ---
>  drivers/block/null_blk.h      | 1 -
>  drivers/block/null_blk_main.c | 1 -
>  2 files changed, 2 deletions(-)
> 
> diff --git a/drivers/block/null_blk.h b/drivers/block/null_blk.h
> index bc837862b767..34fec8814bf1 100644
> --- a/drivers/block/null_blk.h
> +++ b/drivers/block/null_blk.h
> @@ -15,7 +15,6 @@
>  
>  struct nullb_cmd {
>  	struct list_head list;
> -	struct llist_node ll_list;
>  	struct __call_single_data csd;
>  	struct request *rq;
>  	struct bio *bio;
> diff --git a/drivers/block/null_blk_main.c b/drivers/block/null_blk_main.c
> index 16510795e377..07301c72b102 100644
> --- a/drivers/block/null_blk_main.c
> +++ b/drivers/block/null_blk_main.c
> @@ -1519,7 +1519,6 @@ static int setup_commands(struct nullb_queue *nq)
>  	for (i = 0; i < nq->queue_depth; i++) {
>  		cmd = &nq->cmds[i];
>  		INIT_LIST_HEAD(&cmd->list);
> -		cmd->ll_list.next = NULL;
>  		cmd->tag = -1U;
>  	}
>  
>