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cgroup: mark "notify_on_release" and "release_agent" cgroup files insane 

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cgroup is tragically outdated.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>
This commit is contained in:
Tejun Heo 2013-06-03 19:13:55 -07:00
parent f12dc02014
commit cc5943a781
1 changed files with 2 additions and 1 deletions
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3
kernel/cgroup.c
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@ -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,