On Fri, 16 Jan 2015, Michal Hocko wrote: > On Fri 16-01-15 16:49:22, Michal Hocko wrote: > [...] > > Why cannot we simply update the global counters from vmstat_shepherd > > directly? > > OK, I should have checked the updating paths... This would be racy, so > update from remote is not an option without additional trickery (like > retries etc.) :/ You can do that if you have a way to ensure that the other cpu does not access the counter. F.e. if the other cpu is staying in user space all the time or it is guaranteed to be idle. -- 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>