Re: [PATCH 02/17] block: call blk_queue_free_zone_bitmaps from disk_release

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On 7/4/22 21:44, Christoph Hellwig wrote:
> The zone bitmaps are only used for non-passthrough I/O, so free them as
> soon as the disk is released.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> ---
>  block/blk-sysfs.c | 2 --
>  block/genhd.c     | 1 +
>  2 files changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c
> index 58cb9cb9f48cd..7590810cf13fc 100644
> --- a/block/blk-sysfs.c
> +++ b/block/blk-sysfs.c
> @@ -776,8 +776,6 @@ static void blk_release_queue(struct kobject *kobj)
>  	blk_free_queue_stats(q->stats);
>  	kfree(q->poll_stat);
>  
> -	blk_queue_free_zone_bitmaps(q);
> -
>  	if (queue_is_mq(q))
>  		blk_mq_release(q);
>  
> diff --git a/block/genhd.c b/block/genhd.c
> index b1fb7e058b9cc..d0bdeb93e922c 100644
> --- a/block/genhd.c
> +++ b/block/genhd.c
> @@ -1165,6 +1165,7 @@ static void disk_release(struct device *dev)
>  
>  	disk_release_events(disk);
>  	kfree(disk->random);
> +	blk_queue_free_zone_bitmaps(disk->queue);
>  	xa_destroy(&disk->part_tbl);
>  
>  	disk->queue->disk = NULL;

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

-- 
Damien Le Moal
Western Digital Research

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