On Tue, Dec 03, 2013 at 01:44:38PM +0400, Vladimir Davydov wrote: > On 12/03/2013 01:33 PM, Dave Chinner wrote: > >> kmemcg reclaim is introduced, we will have to make up phony values for > >> nr_pages_scanned and lru_pages again when doing kmem-only reclaim for a > >> memory cgroup, which is possible if the cgroup has its kmem limit less > >> than the total memory limit. > > I'm missing something here - why would memcg reclaim require > > passing phony values? How are you going to keep slab caches in > > balance with memory pressure generated by the page cache? > > To perform kmem-only reclaim - please see patch 13. When the kmem limit > is less than the user limit, we can reach only the kmem limit. It is no > use trying to reclaim page cache then. Oh dear. What a nasty hack. Dave. -- Dave Chinner david@xxxxxxxxxxxxx -- 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>