On Mon, Nov 14, 2022 at 10:19:30AM -0800, Chris Mason wrote:
> blkcg_css_online is supposed to pin the blkcg of the parent, but
> 397c9f46ee4d refactored things and along the way, changed it to pin the
> css instead. This results in extra pins, and we end up leaking blkcgs
> and cgroups.
>
> Fixes: 397c9f46ee4d ("blk-cgroup: move blkcg_{pin,unpin}_online out of line")
> Signed-off-by: Chris Mason <clm@xxxxxx>
> Spotted-by: Rik van Riel <riel@xxxxxxxxxxx>
> Cc: <stable@xxxxxxxxxxxxxxx> # v5.19+
Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
