cgroup: mark "notify_on_release" and "release_agent" cgroup files insane
authorTejun Heo <tj@kernel.org>
Tue, 4 Jun 2013 02:13:55 +0000 (19:13 -0700)
committerTejun Heo <tj@kernel.org>
Wed, 5 Jun 2013 19:00:33 +0000 (12:00 -0700)
The empty cgroup notification mechanism currently implemented in
cgroup is tragically outdated.  Forking and execing userland process
stopped being a viable notification mechanism more than a decade ago.
We're gonna have a saner mechanism.  Let's make it clear that this
abomination is going away.

Mark "notify_on_release" and "release_agent" with CFTYPE_INSANE.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>
kernel/cgroup.c

index 1e0f445b5b887750e8a39d07ca164fc4e0b51ed9..b3bb8a39364286cc2b855d56790587e7e5ca043a 100644 (file)
@@ -4052,6 +4052,7 @@ static struct cftype files[] = {
        },
        {
                .name = "notify_on_release",
+               .flags = CFTYPE_INSANE,
                .read_u64 = cgroup_read_notify_on_release,
                .write_u64 = cgroup_write_notify_on_release,
        },
@@ -4073,7 +4074,7 @@ static struct cftype files[] = {
        },
        {
                .name = "release_agent",
-               .flags = CFTYPE_ONLY_ON_ROOT,
+               .flags = CFTYPE_INSANE | CFTYPE_ONLY_ON_ROOT,
                .read_seq_string = cgroup_release_agent_show,
                .write_string = cgroup_release_agent_write,
                .max_write_len = PATH_MAX,