1 files changed, 3 insertions, 12 deletions

diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
index b8bcbdeb2eac..b622d6608605 100644
--- a/include/linux/cgroup.h
+++ b/include/linux/cgroup.h
@@ -569,20 +569,11 @@ static inline bool cgroup_is_descendant(struct cgroup *cgrp,
 static inline struct cgroup *cgroup_ancestor(struct cgroup *cgrp,
                                              int ancestor_level)
 {
-        struct cgroup *ptr;
-
         if (cgrp->level < ancestor_level)
                 return NULL;
-
-        for (ptr = cgrp;
-             ptr && ptr->level > ancestor_level;
-             ptr = cgroup_parent(ptr))
-                ;
-
-        if (ptr && ptr->level == ancestor_level)
-                return ptr;
-
-        return NULL;
+        while (cgrp && cgrp->level > ancestor_level)
+                cgrp = cgroup_parent(cgrp);
+        return cgrp;
 }
 
 /**