On Thu, Jan 05, 2023 at 09:14:07AM +0800, Yu Kuai wrote: > 1) is related to blkg, while 2) is not, hence refcnting from blkg can't > fix the problem. refcnting from blkcg_policy_data should be ok, but I > see that bfq already has the similar refcnting, while other policy > doesn't require such refcnting. Hmm... taking a step back, wouldn't this be solved by moving the first part of ioc_pd_free() to pd_offline_fn()? The ordering is strictly defined there, right? Thanks. -- tejun
