On Mon, May 10, 2021 at 2:40 PM Roman Gushchin <guro@xxxxxx> wrote: > > After the introduction of the cgroup.kill there is only one call site > of cgroup_task_freeze() left: cgroup_exit(). cgroup_task_freeze() is > currently taking rcu_read_lock() to read task's cgroup flags, but > because it's always called with css_set_lock locked, the rcu protection > is excessive. > > Simplify the code by inlining cgroup_task_freeze(). > > v2: fix build > > Signed-off-by: Roman Gushchin <guro@xxxxxx> Reviewed-by: Shakeel Butt <shakeelb@xxxxxxxxxx>
