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-rw-r--r--kernel/cgroup.c28
1 files changed, 0 insertions, 28 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 7a6c4c72ca55..f51443fd5f71 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -5035,34 +5035,6 @@ void cgroup_exit(struct task_struct *tsk, int run_callbacks)
put_css_set_taskexit(cg);
}
-/**
- * cgroup_is_descendant - see if @cgrp is a descendant of @task's cgrp
- * @cgrp: the cgroup in question
- * @task: the task in question
- *
- * See if @cgrp is a descendant of @task's cgroup in the appropriate
- * hierarchy.
- *
- * If we are sending in dummytop, then presumably we are creating
- * the top cgroup in the subsystem.
- *
- * Called only by the ns (nsproxy) cgroup.
- */
-int cgroup_is_descendant(const struct cgroup *cgrp, struct task_struct *task)
-{
- int ret;
- struct cgroup *target;
-
- if (cgrp == dummytop)
- return 1;
-
- target = task_cgroup_from_root(task, cgrp->root);
- while (cgrp != target && cgrp!= cgrp->top_cgroup)
- cgrp = cgrp->parent;
- ret = (cgrp == target);
- return ret;
-}
-
static void check_for_release(struct cgroup *cgrp)
{
/* All of these checks rely on RCU to keep the cgroup