On Tue, Jul 29, 2014 at 10:10:11AM -0500, Christoph Lameter wrote: > On Tue, 29 Jul 2014, Tejun Heo wrote: > > > I agree this can be improved, but at least for now, please add cpu > > down hooks. We need them right now and they'll be helpful when later > > separating out the correctness ones. > > mm/vmstat.c already has cpu down hooks. See vmstat_cpuup_callback(). Hmmm, well, then it's something else. Either a bug in workqueue or in the caller. Given the track record, the latter is more likely. e.g. it looks kinda suspicious that the work func is cleared after cancel_delayed_work_sync() is called. What happens if somebody tries to schedule it inbetween? Thanks. -- tejun -- 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>