Re: [PATCH V2 5/7] bcache: update cached_dev_init() with helper

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On 2019/6/17 9:28 上午, Chaitanya Kulkarni wrote:
> In the bcache when initializing the device we don't actually use any
> sort of locking when reading the number of sectors from the part. This
> patch updates the cached_dev_init() with newly introduced helper
> function to read the nr_sects from block device's hd_parts with the help
> of part_nr_sects_read().
> 
> Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@xxxxxxx>

Acked-by: Coly Li <colyli@xxxxxxx>

Thanks.

Coly Li

> ---
>  drivers/md/bcache/super.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
> index 1b63ac876169..6a29ba89dae1 100644
> --- a/drivers/md/bcache/super.c
> +++ b/drivers/md/bcache/super.c
> @@ -1263,7 +1263,7 @@ static int cached_dev_init(struct cached_dev *dc, unsigned int block_size)
>  			q->limits.raid_partial_stripes_expensive;
>  
>  	ret = bcache_device_init(&dc->disk, block_size,
> -			 dc->bdev->bd_part->nr_sects - dc->sb.data_offset);
> +			 bdev_nr_sects(dc->bdev) - dc->sb.data_offset);
>  	if (ret)
>  		return ret;
>  
> 



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