Re: [PATCH 10/17] block: pass a gendisk to blk_queue_free_zone_bitmaps

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On 7/4/22 21:44, Christoph Hellwig wrote:
> Switch to a gendisk based API in preparation for moving all zone related
> fields from the request_queue to the gendisk.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>

Reviewed-by: Damien Le Moal <damien.lemoal@xxxxxxxxxxxxxxxxxx>

> ---
>  block/blk-zoned.c | 8 +++++---
>  block/blk.h       | 4 ++--
>  block/genhd.c     | 2 +-
>  3 files changed, 8 insertions(+), 6 deletions(-)
> 
> diff --git a/block/blk-zoned.c b/block/blk-zoned.c
> index 5a97b48102221..9085f9fb3ab42 100644
> --- a/block/blk-zoned.c
> +++ b/block/blk-zoned.c
> @@ -449,8 +449,10 @@ int blkdev_zone_mgmt_ioctl(struct block_device *bdev, fmode_t mode,
>  	return ret;
>  }
>  
> -void blk_queue_free_zone_bitmaps(struct request_queue *q)
> +void disk_free_zone_bitmaps(struct gendisk *disk)
>  {
> +	struct request_queue *q = disk->queue;
> +
>  	kfree(q->conv_zones_bitmap);
>  	q->conv_zones_bitmap = NULL;
>  	kfree(q->seq_zones_wlock);
> @@ -612,7 +614,7 @@ int blk_revalidate_disk_zones(struct gendisk *disk,
>  		ret = 0;
>  	} else {
>  		pr_warn("%s: failed to revalidate zones\n", disk->disk_name);
> -		blk_queue_free_zone_bitmaps(q);
> +		disk_free_zone_bitmaps(disk);
>  	}
>  	blk_mq_unfreeze_queue(q);
>  
> @@ -628,7 +630,7 @@ void disk_clear_zone_settings(struct gendisk *disk)
>  
>  	blk_mq_freeze_queue(q);
>  
> -	blk_queue_free_zone_bitmaps(q);
> +	disk_free_zone_bitmaps(disk);
>  	blk_queue_flag_clear(QUEUE_FLAG_ZONE_RESETALL, q);
>  	q->required_elevator_features &= ~ELEVATOR_F_ZBD_SEQ_WRITE;
>  	q->nr_zones = 0;
> diff --git a/block/blk.h b/block/blk.h
> index 7482a3a441dd9..b71e22c97d773 100644
> --- a/block/blk.h
> +++ b/block/blk.h
> @@ -405,10 +405,10 @@ static inline int blk_iolatency_init(struct request_queue *q) { return 0; }
>  #endif
>  
>  #ifdef CONFIG_BLK_DEV_ZONED
> -void blk_queue_free_zone_bitmaps(struct request_queue *q);
> +void disk_free_zone_bitmaps(struct gendisk *disk);
>  void disk_clear_zone_settings(struct gendisk *disk);
>  #else
> -static inline void blk_queue_free_zone_bitmaps(struct request_queue *q) {}
> +static inline void disk_free_zone_bitmaps(struct gendisk *disk) {}
>  static inline void disk_clear_zone_settings(struct gendisk *disk) {}
>  #endif
>  
> diff --git a/block/genhd.c b/block/genhd.c
> index d0bdeb93e922c..9d30f159c59ac 100644
> --- a/block/genhd.c
> +++ b/block/genhd.c
> @@ -1165,7 +1165,7 @@ static void disk_release(struct device *dev)
>  
>  	disk_release_events(disk);
>  	kfree(disk->random);
> -	blk_queue_free_zone_bitmaps(disk->queue);
> +	disk_free_zone_bitmaps(disk);
>  	xa_destroy(&disk->part_tbl);
>  
>  	disk->queue->disk = NULL;


-- 
Damien Le Moal
Western Digital Research

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