On Fri, May 25, 2012 at 05:03:36PM +0400, Glauber Costa wrote:

+bool __mem_cgroup_new_kmem_page(struct page *page, gfp_t gfp)
+{
+	struct mem_cgroup *memcg;
+	struct page_cgroup *pc;
+	bool ret = true;
+	size_t size;
+	struct task_struct *p;
+
+	if (!current->mm || in_interrupt())
+		return true;
+
+	rcu_read_lock();
+	p = rcu_dereference(current->mm->owner);
+	memcg = mem_cgroup_from_task(p);

So this takes the memcg of the group owner rather than the
task? I understand why we want this for user memory, but for
kernel?