On Mon, 18 Jun 2012, Glauber Costa wrote: > In the slub allocator, when the last object of a page goes away, we > don't necessarily free it - there is not necessarily a test for empty > page in any slab_free path. This is the same btw in SLAB which keeps objects in per cpu caches and keeps empty slab pages on special queues. > This patch marks all memcg caches as dead. kmem_cache_shrink is called > for the ones who are not yet dead - this will force internal cache > reorganization, and then all references to empty pages will be removed. You need to call this also for slab to drain the caches and free the pages on the empty list. -- 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>