[Please do not top-post] On Thu 10-08-17 16:10:45, wang Yu wrote: > at first ,thanks for your reply. > but i also tested what you said, the problem is also. > force_empty only call try_to_free_pages, not all the pages remove > because mem_cgroup_reparent_charges moved Right. An alternative would be dropping the page cache globaly via /proc/sys/vm/drop_caches. Not an ideal solution but it should help. -- Michal Hocko SUSE Labs -- 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>
