cgroup: Remove unnecessary task_lock before fetching css_set on migration

When we fetch the css_set of the tasks on cgroup migration, we don't need
anymore to synchronize against cgroup_exit() that could swap the old one
with init_css_set. Now that we are using threadgroup_lock() during
the migrations, we don't need to worry about it anymore.

Signed-off-by: Frederic Weisbecker <[email protected]>
Reviewed-by: Mandeep Singh Baines <[email protected]>
Reviewed-by: Li Zefan <[email protected]>
Signed-off-by: Tejun Heo <[email protected]>
Cc: Containers <[email protected]>
Cc: Cgroups <[email protected]>
Cc: KAMEZAWA Hiroyuki <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Paul Menage <[email protected]>

0 files changed, 0 insertions, 0 deletions