On Tue, 16 Oct 2012 14:16:44 +0400 Glauber Costa <glommer@xxxxxxxxxxxxx> wrote: > When a process tries to allocate a page with the __GFP_KMEMCG flag, the > page allocator will call the corresponding memcg functions to validate > the allocation. Tasks in the root memcg can always proceed. > > To avoid adding markers to the page - and a kmem flag that would > necessarily follow, as much as doing page_cgroup lookups for no reason, > whoever is marking its allocations with __GFP_KMEMCG flag is responsible > for telling the page allocator that this is such an allocation at > free_pages() time. Well, why? Was that the correct decision? > This is done by the invocation of > __free_accounted_pages() and free_accounted_pages(). These are very general-sounding names. I'd expect the identifiers to contain "memcg" and/or "kmem", to identify what's going on. -- 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>