On Tue, Jan 05, 2016 at 04:02:13PM +0100, Peter Zijlstra wrote: > > Shouldn't the slab subsystem do this for us if we request it delays the > > actual kfree? Seems like a core bug to me ... Adding more folks. > > note that sync_rcu() can take a terribly long time.. but yes, I seem to > remember Paul talking about adding this to reclaim paths for just this > reason. Not sure that ever happened thouhg. Also, you might be wanting rcu_barrier() instead, that not only waits for a GP to complete, but also for all pending callbacks to be processed. Without the latter there might still not be anything to free after it. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>