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-rw-r--r--fs/nsfs.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/nsfs.c b/fs/nsfs.c
index 3887da470f7e..fb7b397a1297 100644
--- a/fs/nsfs.c
+++ b/fs/nsfs.c
@@ -171,6 +171,10 @@ static long ns_ioctl(struct file *filp, unsigned int ioctl,
switch (ioctl) {
case NS_GET_USERNS:
return open_related_ns(ns, ns_get_owner);
+ case NS_GET_PARENT:
+ if (!ns->ops->get_parent)
+ return -EINVAL;
+ return open_related_ns(ns, ns->ops->get_parent);
default:
return -ENOTTY;
}