> > > Though I am thinking, workqueue context is normally used to invoke > > code that can block, and would the issue you mentioned affect those as > > well, or affect RCU when those non-RCU work items block. So for > > example, when other things in the system that can queue things on the > > system_wq and block. (I might be throwing darts in the dark). > > > > To be safe, we can implement your suggestion which is basically a form > > of my initial patch. > > > > Should we add Tejun to the thread? > > Let's get organized first, but that would be a good thing. Or I could > reach out to Tejun internally. > > For but one thing to get organized about, maybe kfree_rcu() should be > using a workqueue with the WQ_MEM_RECLAIM flag set. > It can be as an option to consider. Because such workqueue has some special priority for better handling of memory releasing. I can have a look at it closer to see how kvfree_rcu() works if it goes with WQ_MEM_RECLAIM. -- Uladzislau Rezki
