I would like to attend to participate in the readahead and writeback discussions. My questions are - readahead size and alignment, hope that we can reach some general agreements on the policy stuff - async write I/O bandwidth controller, will it be a good complement feature to the current blk-cgroup I/O controller? Each seem to have its own strong areas and weak points. - per-memcg dirty pages control, to be frank, it's non-trivial to implement and I'm not sure it will perform well in some cases. Before following that direction, I'm curious whether the much more simple scheme of moving dirty pages to the global LRU can magically satisfy the main user demands. Thanks, Fengguang -- 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>