Commit 425c598d authored by Glauber Costa's avatar Glauber Costa Committed by Linus Torvalds
Browse files

memcg: do not account memory used for cache creation 



The memory we used to hold the memcg arrays is currently accounted to
the current memcg.  But that creates a problem, because that memory can
only be freed after the last user is gone.  Our only way to know which
is the last user, is to hook up to freeing time, but the fact that we
still have some in flight kmallocs will prevent freeing to happen.  I
believe therefore to be just easier to account this memory as global
overhead.

Signed-off-by: default avatarGlauber Costa <glommer@openvz.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 6d42c232

mm/memcontrol.c

+2 −0
Original line number Diff line number Diff line
@@ -5232,7 +5232,9 @@ static int memcg_propagate_kmem(struct mem_cgroup *memcg) 
	static_key_slow_inc(&memcg_kmem_enabled_key);



	mutex_lock(&set_limit_mutex);

	memcg_stop_kmem_account();

	ret = memcg_update_cache_sizes(memcg);

	memcg_resume_kmem_account();

	mutex_unlock(&set_limit_mutex);

out:

	return ret;