EBUSY should be returned.
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
---
mm/hugetlb.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 17ae2e4..4dd6b39 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -1922,8 +1922,11 @@ int hugetlb_force_memcg_empty(struct cgroup *cgroup)
int ret = 0, idx = 0;
do {
- if (cgroup_task_count(cgroup) || !list_empty(&cgroup->children))
+ if (cgroup_task_count(cgroup)
+ || !list_empty(&cgroup->children)) {
+ ret = -EBUSY;
goto out;
+ }
/*
* If the task doing the cgroup_rmdir got a signal
* we don't really need to loop till the hugetlb resource
--
1.7.4.1
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