>From c705a00d77457b44ba3790fdf0627ecb8593a254 Mon Sep 17 00:00:00 2001 From: Tejun Heo <[email protected]> Date: Tue, 25 Jul 2017 13:20:18 -0400
Explain cgroup_enable_threaded() and note that the function can never be called on the root cgroup. Signed-off-by: Tejun Heo <[email protected]> Suggested-by: Waiman Long <[email protected]> --- Hello, Waiman. Good point. Added comment explaining what's going on. Applying the patch to cgroup/for-4.14. Thanks. kernel/cgroup/cgroup.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index e0a558c..85f6a11 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -3129,6 +3129,15 @@ static ssize_t cgroup_subtree_control_write(struct kernfs_open_file *of, return ret ?: nbytes; } +/** + * cgroup_enable_threaded - make @cgrp threaded + * @cgrp: the target cgroup + * + * Called when "threaded" is written to the cgroup.type interface file and + * tries to make @cgrp threaded and join the parent's resource domain. + * This function is never called on the root cgroup as cgroup.type doesn't + * exist on it. + */ static int cgroup_enable_threaded(struct cgroup *cgrp) { struct cgroup *parent = cgroup_parent(cgrp); -- 2.9.3
