On Tue, May 31, 2022 at 07:19:31AM -1000, Tejun Heo wrote: > Maybe just keep the sequence numbers for started and completed offline > operations and wait for completed# to reach the started# on memcg alloc > failure and retry? Note that we can get live locked, so have to remember the > sequence number to wait for at the beginning. Or, even simpler, maybe it'd > be enough to just do synchronize_rcu() and then wait for the offline wait > once and retry. Also, given that it's an memcg ID issue. It probably makes sense to implement it on the memcg side. Thanks. -- tejun
