On Wed, Jul 08, 2015 at 02:27:50PM +0200, Michal Hocko wrote: > From: Michal Hocko <mhocko@xxxxxxx> > > sk_prot->proto_cgroup is allowed to return NULL but sock_update_memcg > doesn't check for NULL. The function relies on the mem_cgroup_is_root > check because we shouldn't get NULL otherwise because > mem_cgroup_from_task will always return !NULL. > > All other callers are checking for NULL and we can safely replace > mem_cgroup_is_root() check by cg_proto != NULL which will be more > straightforward (proto_cgroup returns NULL for the root memcg already). > > Signed-off-by: Michal Hocko <mhocko@xxxxxxx> Reviewed-by: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx> -- 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>