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| author | Li Zefan <lizefan@huawei.com> | 2013-03-12 23:35:58 +0100 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2013-03-12 23:35:58 +0100 |
| commit | e7b2dcc52b0e2d598a469f01cc460ccdde6869f2 (patch) | |
| tree | c716655a75a9f91de5f21f94fe53e96fbf680fe9 /kernel/cgroup.c | |
| parent | cpuset: fix RCU lockdep splat in cpuset_print_task_mems_allowed() (diff) | |
| download | linux-e7b2dcc52b0e2d598a469f01cc460ccdde6869f2.tar.xz linux-e7b2dcc52b0e2d598a469f01cc460ccdde6869f2.zip | |
cgroup: remove cgroup_is_descendant()
It was used by ns cgroup, and ns cgroup was removed long ago.
Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/cgroup.c')
| -rw-r--r-- | kernel/cgroup.c | 28 |
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 |