Re: [PATCH 53/78] blk-cgroup: fix a hd_struct leak in blkcg_fill_root_iostats

[Hannes Reinecke <hare@xxxxxxx>]

On 11/16/20 3:57 PM, Christoph Hellwig wrote:
> disk_get_part needs to be paired with a disk_put_part.
>
> Fixes: ef45fe470e1 ("blk-cgroup: show global disk stats in root cgroup io.stat")
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> ---
>   block/blk-cgroup.c | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
> index c68bdf58c9a6e1..54fbe1e80cc41a 100644
> --- a/block/blk-cgroup.c
> +++ b/block/blk-cgroup.c
> @@ -849,6 +849,7 @@ static void blkcg_fill_root_iostats(void)
>   			blkg_iostat_set(&blkg->iostat.cur, &tmp);
>   			u64_stats_update_end(&blkg->iostat.sync);
>   		}
> +		disk_put_part(part);
>   	}
>   }
>   
Reviewed-by: Hannes Reinecke <hare@xxxxxxx>

Cheers,

Hannes
--
Dr. Hannes Reinecke                Kernel Storage Architect
hare@xxxxxxx                              +49 911 74053 688
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