linux-kernel - Re: [PATCH] block: remove unnecessary type castings

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Message-Id: <F4182887-F9F8-4527-B575-02D6BF56D4C4@unimore.it>
Date:   Wed, 20 Jul 2022 13:19:34 +0200
From:   Paolo VALENTE <paolo.valente@...more.it>
To:     Yu Zhe <yuzhe@...china.com>
Cc:     Jens Axboe <axboe@...nel.dk>,
        linux-block <linux-block@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>, liqiong@...china.com
Subject: Re: [PATCH] block: remove unnecessary type castings



> Il giorno 6 lug 2022, alle ore 07:35, Yu Zhe <yuzhe@...china.com> ha scritto:
> 
> remove unnecessary void* type castings.
> 

Thanks for improving BFQ code. Which commit made these casts unnecessary?

Paolo


> Signed-off-by: Yu Zhe <yuzhe@...china.com>
> ---
> block/bfq-wf2q.c   | 6 +++---
> block/blk-iocost.c | 2 +-
> 2 files changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/block/bfq-wf2q.c b/block/bfq-wf2q.c
> index f8eb340381cf..2a666b100bcb 100644
> --- a/block/bfq-wf2q.c
> +++ b/block/bfq-wf2q.c
> @@ -474,7 +474,7 @@ static void bfq_active_insert(struct bfq_service_tree *st,
> #ifdef CONFIG_BFQ_GROUP_IOSCHED
> 	sd = entity->sched_data;
> 	bfqg = container_of(sd, struct bfq_group, sched_data);
> -	bfqd = (struct bfq_data *)bfqg->bfqd;
> +	bfqd = bfqg->bfqd;
> #endif
> 	if (bfqq)
> 		list_add(&bfqq->bfqq_list, &bfqq->bfqd->active_list);
> @@ -573,7 +573,7 @@ static void bfq_active_extract(struct bfq_service_tree *st,
> #ifdef CONFIG_BFQ_GROUP_IOSCHED
> 	sd = entity->sched_data;
> 	bfqg = container_of(sd, struct bfq_group, sched_data);
> -	bfqd = (struct bfq_data *)bfqg->bfqd;
> +	bfqd = bfqg->bfqd;
> #endif
> 	if (bfqq)
> 		list_del(&bfqq->bfqq_list);
> @@ -719,7 +719,7 @@ __bfq_entity_update_weight_prio(struct bfq_service_tree *old_st,
> 		else {
> 			sd = entity->my_sched_data;
> 			bfqg = container_of(sd, struct bfq_group, sched_data);
> -			bfqd = (struct bfq_data *)bfqg->bfqd;
> +			bfqd = bfqg->bfqd;
> 		}
> #endif
> 
> diff --git a/block/blk-iocost.c b/block/blk-iocost.c
> index 33a11ba971ea..117181a69b7a 100644
> --- a/block/blk-iocost.c
> +++ b/block/blk-iocost.c
> @@ -1430,7 +1430,7 @@ static int iocg_wake_fn(struct wait_queue_entry *wq_entry, unsigned mode,
> 			int flags, void *key)
> {
> 	struct iocg_wait *wait = container_of(wq_entry, struct iocg_wait, wait);
> -	struct iocg_wake_ctx *ctx = (struct iocg_wake_ctx *)key;
> +	struct iocg_wake_ctx *ctx = key;
> 	u64 cost = abs_cost_to_cost(wait->abs_cost, ctx->hw_inuse);
> 
> 	ctx->vbudget -= cost;
> -- 
> 2.11.0
>