tree 82d1e2ab77163416f6eb63d2b642e88b6ad63143
parent 6cc578df40bd60b791725e4451bc01f8c80abd8b
author Tejun Heo <tj@kernel.org> 1457455885 -0500
committer Tejun Heo <tj@kernel.org> 1457455885 -0500

cgroup: fix incorrect destination cgroup in cgroup_update_dfl_csses()

cgroup_update_dfl_csses() should move each task in the subtree to
self; however, it was incorrectly calling cgroup_migrate_add_src()
with the root of the subtree as @dst_cgrp.  Fortunately,
cgroup_migrate_add_src() currently uses @dst_cgrp only to determine
the hierarchy and the bug doesn't cause any actual breakages.  Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>