On Tue, Sep 20, 2011 at 05:02:29PM +0200, Michal Hocko wrote: > On Mon 12-09-11 12:57:23, Johannes Weiner wrote: > > root_mem_cgroup, lacking a configurable limit, was never subject to > > limit reclaim, so the pages charged to it could be kept off its LRU > > lists. They would be found on the global per-zone LRU lists upon > > physical memory pressure and it made sense to avoid uselessly linking > > them to both lists. > > > > The global per-zone LRU lists are about to go away on memcg-enabled > > kernels, with all pages being exclusively linked to their respective > > per-memcg LRU lists. As a result, pages of the root_mem_cgroup must > > also be linked to its LRU lists again. > > Nevertheless we still do not charge them so this should be mentioned > here? Added for the next revision: "This is purely about the LRU list, root_mem_cgroup is still not charged." -- 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>