Now that pre_destroy callbacks are called from the context where neither
any task can attach the group nor any children group can be added there
is no other way to fail from hugetlb_pre_destroy.
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Reviewed-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Glauber Costa <glommer@parallels.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
{
struct hstate *h;
struct page *page;
- int ret = 0, idx = 0;
+ int idx = 0;
do {
- if (cgroup_task_count(cgroup) ||
- !list_empty(&cgroup->children)) {
- ret = -EBUSY;
- goto out;
- }
for_each_hstate(h) {
spin_lock(&hugetlb_lock);
list_for_each_entry(page, &h->hugepage_activelist, lru)
}
cond_resched();
} while (hugetlb_cgroup_have_usage(cgroup));
-out:
- return ret;
+
+ return 0;
}
int hugetlb_cgroup_charge_cgroup(int idx, unsigned long nr_pages,