[GIT PULL] cgroup changes for 3.9-rc1

Hello, Linus. These are cgroup changes for 3.9-rc1. Nothing too drastic. * Removal of synchronize_rcu() from userland visible paths. * Various fixes and cleanups from Li. * cgroup_rightmost_descendant() added which will be used by cpuset changes (it will be a separate pull request). The

[GIT PULL] cgroup changes for 3.9-rc1

Hello, Linus. These are cgroup changes for 3.9-rc1. Nothing too drastic. * Removal of synchronize_rcu() from userland visible paths. * Various fixes and cleanups from Li. * cgroup_rightmost_descendant() added which will be used by cpuset changes (it will be a separate pull request). The