Re: [PATCH 1/1] cgroup: avoid the unnecessary list_add(dying_tasks) in cgroup_exit()

[Tejun Heo]

On Mon, Jun 17, 2024 at 04:31:52PM +0200, Oleg Nesterov wrote:
> cgroup_exit() needs to do this only if the exiting task is a leader and it
> is not the last live thread.  The patch doesn't use delay_group_leader(),
> atomic_read(signal->live) matches the code css_task_iter_advance() more.
> 
> cgroup_release() can now check list_empty(task->cg_list) before it takes
> css_set_lock and calls ss_set_skip_task_iters().
> 
> Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>

Applied to cgroup/for-6.11.

Thanks.

-- 
tejun