Hi Greg, Sorry, I forgot to say that I don't subscribe linux-mm and linux-kernel mailing list. So please Cc me. I am glad to receive your reply and I am very interesting for your approach. Actually I am not very familiar with CGroup. So would you please send your patch to me if you can? Thank you all the same. Regards, Zheng -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>