On Tue 18-09-12 18:11:59, Glauber Costa wrote: > Allow a memcg parameter to be passed during cache creation. > When the slub allocator is being used, it will only merge > caches that belong to the same memcg. > > Default function is created as a wrapper, passing NULL > to the memcg version. We only merge caches that belong > to the same memcg. > > From the memcontrol.c side, 3 helper functions are created: > > 1) memcg_css_id: because slub needs a unique cache name > for sysfs. Since this is visible, but not the canonical > location for slab data, the cache name is not used, the > css_id should suffice. > > 2) mem_cgroup_register_cache: is responsible for assigning > a unique index to each cache, and other general purpose > setup. The index is only assigned for the root caches. All > others are assigned index == -1. It would be nice to describe what is memcg_params.id intended for. There is no usage in this patch (except for create_unique_id in slub). I guess that by root caches you mean all default caches with memcg==NULL, right? [...] -- Michal Hocko SUSE Labs -- 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>