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cgroup: kill cgrp_ss_priv[CGROUP_CANFORK_COUNT] and friends

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Now that nobody use the "priv" arg passed to can_fork/cancel_fork/fork we can
kill CGROUP_CANFORK_COUNT/SUBSYS_TAG/etc and cgrp_ss_priv[] in copy_process().

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Oleg Nesterov 2015-12-03 10:24:08 -05:00 • committed by Tejun Heo
parent 8075b542cf
commit b53202e630
8 changed files with 23 additions and 71 deletions
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4
kernel/cgroup_pids.c
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@ -209,7 +209,7 @@ static void pids_cancel_attach(struct cgroup_taskset *tset)
* task_css_check(true) in pids_can_fork() and pids_cancel_fork() relies
* on threadgroup_change_begin() held by the copy_process().
*/
static int pids_can_fork(struct task_struct *task, void **priv_p)
static int pids_can_fork(struct task_struct *task)
{
struct cgroup_subsys_state *css;
struct pids_cgroup *pids;
@ -219,7 +219,7 @@ static int pids_can_fork(struct task_struct *task, void **priv_p)
return pids_try_charge(pids, 1);
}
static void pids_cancel_fork(struct task_struct *task, void *priv)
static void pids_cancel_fork(struct task_struct *task)
{
struct cgroup_subsys_state *css;
struct pids_cgroup *pids;