Each css_set directly points to the default cgroup it belongs to, so
there's no reason to walk the cgrp_links list on the default
hierarchy.
Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
---
Minor optimization. Applying to cgroup/for-4.14.
Thanks.
kernel/cgroup/cgroup.c | 2 ++
1 file changed, 2 insertions(+)
--- a/kernel/cgroup/cgroup.c
+++ b/kernel/cgroup/cgroup.c
@@ -1311,6 +1311,8 @@ static struct cgroup *cset_cgroup_from_r
if (cset == &init_css_set) {
res = &root->cgrp;
+ } else if (root == &cgrp_dfl_root) {
+ res = cset->dfl_cgrp;
} else {
struct cgrp_cset_link *link;
--
To unsubscribe from this list: send the line "unsubscribe cgroups" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
