1 files changed, 0 insertions, 49 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index a32f9432666c..dfaf50d4705e 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -5416,55 +5416,6 @@ struct cgroup_subsys_state *css_lookup(struct cgroup_subsys *ss, int id)
 }
 EXPORT_SYMBOL_GPL(css_lookup);
 
-/**
- * css_get_next - lookup next cgroup under specified hierarchy.
- * @ss: pointer to subsystem
- * @id: current position of iteration.
- * @root: pointer to css. search tree under this.
- * @foundid: position of found object.
- *
- * Search next css under the specified hierarchy of rootid. Calling under
- * rcu_read_lock() is necessary. Returns NULL if it reaches the end.
- */
-struct cgroup_subsys_state *
-css_get_next(struct cgroup_subsys *ss, int id,
-	     struct cgroup_subsys_state *root, int *foundid)
-{
-	struct cgroup_subsys_state *ret = NULL;
-	struct css_id *tmp;
-	int tmpid;
-	int rootid = css_id(root);
-	int depth = css_depth(root);
-
-	if (!rootid)
-		return NULL;
-
-	BUG_ON(!ss->use_id);
-	WARN_ON_ONCE(!rcu_read_lock_held());
-
-	/* fill start point for scan */
-	tmpid = id;
-	while (1) {
-		/*
-		 * scan next entry from bitmap(tree), tmpid is updated after
-		 * idr_get_next().
-		 */
-		tmp = idr_get_next(&ss->idr, &tmpid);
-		if (!tmp)
-			break;
-		if (tmp->depth >= depth && tmp->stack[depth] == rootid) {
-			ret = rcu_dereference(tmp->css);
-			if (ret) {
-				*foundid = tmpid;
-				break;
-			}
-		}
-		/* continue to scan from next id */
-		tmpid = tmpid + 1;
-	}
-	return ret;
-}
-
 /*
  * get corresponding css from file open on cgroupfs directory
  */