linux-kernel - Re: [PATCH 1/7] block: remove superfluous check for request queue in bdev_is

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Date:   Fri, 6 Jan 2023 20:01:06 +0900
From:   Damien Le Moal <damien.lemoal@...nsource.wdc.com>
To:     Pankaj Raghav <p.raghav@...sung.com>, axboe@...nel.dk
Cc:     kernel@...kajraghav.com, linux-kernel@...r.kernel.org,
        hare@...e.de, bvanassche@....org, snitzer@...nel.org,
        dm-devel@...hat.com, linux-nvme@...ts.infradead.org, hch@....de,
        linux-block@...r.kernel.org, gost.dev@...sung.com
Subject: Re: [PATCH 1/7] block: remove superfluous check for request queue in
 bdev_is_zoned

On 1/6/23 17:33, Pankaj Raghav wrote:
> Remove the superfluous request queue check in bdev_is_zoned() as the
> bdev_get_queue can never return NULL.
> 
> Signed-off-by: Pankaj Raghav <p.raghav@...sung.com>
> ---
>  include/linux/blkdev.h | 7 +------
>  1 file changed, 1 insertion(+), 6 deletions(-)
> 
> diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
> index 43d4e073b111..0e40b014c40b 100644
> --- a/include/linux/blkdev.h
> +++ b/include/linux/blkdev.h
> @@ -1283,12 +1283,7 @@ static inline enum blk_zoned_model bdev_zoned_model(struct block_device *bdev)
>  
>  static inline bool bdev_is_zoned(struct block_device *bdev)
>  {
> -	struct request_queue *q = bdev_get_queue(bdev);
> -
> -	if (q)
> -		return blk_queue_is_zoned(q);
> -
> -	return false;
> +	return blk_queue_is_zoned(bdev_get_queue(bdev));
>  }
>  
>  static inline bool bdev_op_is_zoned_write(struct block_device *bdev,

Reviewed-by: Damien Le Moal <damien.lemoal@...nsource.wdc.com>

-- 
Damien Le Moal
Western Digital Research