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    SubjectRe: [PATCH 3/9] [RFC] Add a back-pointer from struct cg_cgroup_link to struct cgroup
    > +static int current_css_set_cg_links_read(struct cgroup *cont,
    > + struct cftype *cft,
    > + struct seq_file *seq)
    > +{
    > + struct cg_cgroup_link *link, *saved_link;
    > + struct css_set *cg;

    call for a newline

    > + write_lock_irq(&css_set_lock);

    can be read_lock(&css_set_lock);

    > + task_lock(current);
    > + cg = current->cgroups;
    > + list_for_each_entry_safe(link, saved_link, &cg->cg_links,
    > + cg_link_list) {
    > + struct cgroup *c = link->cgrp;
    > + const char *name;

    call for a newline

    > + rcu_read_lock();
    > + if (c->dentry)
    > + name = c->dentry->d_name.name;
    > + else
    > + name = "?";
    > + seq_printf(seq, "Root %lu group %s\n",
    > + c->root->subsys_bits, name);
    > + rcu_read_unlock();
    > + }
    > + task_unlock(current);
    > + write_unlock_irq(&css_set_lock);
    > + return 0;
    > +}
    > +


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