cgroup: remove redundant check in cgroup_ino()
After we implemented default unified hierarchy, cgrp->kn can never
be NULL.
Signed-off-by: Zefan Li <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index 77a1d37..818a81f 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -532,13 +532,10 @@
return !list_empty(&cgrp->cset_links);
}
-/* returns ino associated with a cgroup, 0 indicates unmounted root */
+/* returns ino associated with a cgroup */
static inline ino_t cgroup_ino(struct cgroup *cgrp)
{
- if (cgrp->kn)
- return cgrp->kn->ino;
- else
- return 0;
+ return cgrp->kn->ino;
}
/* cft/css accessors for cftype->write() operation */