(cc'ing Roman)
Hello,
On Tue, Mar 06, 2018 at 03:46:56PM -0800, Matt Roper wrote:
> +static inline struct cgroup *
> +task_get_dfl_cgroup(struct task_struct *task)
> +{
> + struct cgroup *cgrp;
> +
> + mutex_lock(&cgroup_mutex);
> + cgrp = task_dfl_cgroup(task);
> + cgroup_get(cgrp);
> + mutex_unlock(&cgroup_mutex);
Heh, this is super heavy. Can't we do "rcu, try get, compare &
retry"?
Thanks.
--
tejun
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