If add into the cgroup.subtree_control file with a subsystem
name which is beyond the scope of the ones in the parent's
cgroup.subtree_control file, the response is ’no such file or
directory', which is confusing since the cgroup.subtree_control
file is present, return EINVAL in this case.
Signed-off-by: Li Wang <liwang@xxxxxxxxxx>
---
kernel/cgroup/cgroup.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c
index 484adb375b15..77c1324ce0c1 100644
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -3391,7 +3391,7 @@ static ssize_t cgroup_subtree_control_write(struct kernfs_open_file *of,
}
if (!(cgroup_control(cgrp) & (1 << ssid))) {
- ret = -ENOENT;
+ ret = -EINVAL;
goto out_unlock;
}
} else if (disable & (1 << ssid)) {
--
2.34.1
