Those structures are only used for memcgs that are effectively using kmemcg. However, in a later patch I intend to use scan that list inconditionally (list empty meaning no kmem caches present), which simplifies the code a lot. So move the initialization to early kmem creation. Signed-off-by: Glauber Costa <glommer@xxxxxxxxxxxxx> Cc: Dave Chinner <dchinner@xxxxxxxxxx> Cc: Mel Gorman <mgorman@xxxxxxx> Cc: Rik van Riel <riel@xxxxxxxxxx> Cc: Johannes Weiner <hannes@xxxxxxxxxxx> Cc: Michal Hocko <mhocko@xxxxxxx> Cc: Hugh Dickins <hughd@xxxxxxxxxx> Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/memcontrol.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 545f922..1f1ded3 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -3149,9 +3149,7 @@ int memcg_update_cache_sizes(struct mem_cgroup *memcg) memcg_update_array_size(num + 1); - INIT_LIST_HEAD(&memcg->memcg_slab_caches); INIT_WORK(&memcg->kmemcg_shrink_work, kmemcg_shrink_work_fn); - mutex_init(&memcg->slab_caches_mutex); return 0; out: @@ -6029,6 +6027,8 @@ static int memcg_init_kmem(struct mem_cgroup *memcg, struct cgroup_subsys *ss) { int ret; + INIT_LIST_HEAD(&memcg->memcg_slab_caches); + mutex_init(&memcg->slab_caches_mutex); memcg->kmemcg_id = -1; ret = memcg_propagate_kmem(memcg); if (ret) -- 1.8.1.4 -- 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>