On Wed, Jul 24, 2019 at 10:37:55AM -0700, Tejun Heo wrote: > blkcg->cgwb_refcnt is used to delay blkcg offlining so that blkgs > don't get offlined while there are active cgwbs on them. However, it > ends up making offlining unordered sometimes causing parents to be > offlined before children. > > Let's fix this by making child blkcgs pin the parents' online states. > > Note that pin/unpin names are chosen over get/put intentionally > because css uses get/put online for something different. > > Signed-off-by: Tejun Heo <tj@xxxxxxxxxx> Jens, these two patches slipped through the cracks. Can you please take a look at them? Thanks. -- tejun
