add ax88772_rst

hc

2024-05-10 9999e48639b3cecb08ffb37358bcba3b48161b29

 kernel/kernel/cgroup/pids.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Process number limiting controller for cgroups.
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  *
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@@ -25,10 +26,6 @@
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  * a superset of parent/child/pids.current.
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  *
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  * Copyright (C) 2015 Aleksa Sarai <cyphar@cyphar.com>
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- *
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- * This file is subject to the terms and conditions of version 2 of the GNU
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- * General Public License.  See the file COPYING in the main directory of the
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- * Linux distribution for more details.
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  */
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 #include <linux/kernel.h>
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@@ -36,6 +33,7 @@
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 #include <linux/atomic.h>
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 #include <linux/cgroup.h>
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 #include <linux/slab.h>
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+#include <linux/sched/task.h>
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 #define PIDS_MAX (PID_MAX_LIMIT + 1ULL)
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 #define PIDS_MAX_STR "max"
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@@ -217,13 +215,16 @@
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  * task_css_check(true) in pids_can_fork() and pids_cancel_fork() relies
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  * on cgroup_threadgroup_change_begin() held by the copy_process().
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  */
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-static int pids_can_fork(struct task_struct *task)
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+static int pids_can_fork(struct task_struct *task, struct css_set *cset)
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 {
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 	struct cgroup_subsys_state *css;
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 	struct pids_cgroup *pids;
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 	int err;
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-	css = task_css_check(current, pids_cgrp_id, true);
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+	if (cset)
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+		css = cset->subsys[pids_cgrp_id];
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+	else
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+		css = task_css_check(current, pids_cgrp_id, true);
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 	pids = css_pids(css);
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 	err = pids_try_charge(pids, 1);
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 	if (err) {
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@@ -238,12 +239,15 @@
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 	return err;
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 }
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-static void pids_cancel_fork(struct task_struct *task)
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+static void pids_cancel_fork(struct task_struct *task, struct css_set *cset)
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 {
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 	struct cgroup_subsys_state *css;
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 	struct pids_cgroup *pids;
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-	css = task_css_check(current, pids_cgrp_id, true);
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+	if (cset)
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+		css = cset->subsys[pids_cgrp_id];
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+	else
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+		css = task_css_check(current, pids_cgrp_id, true);
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 	pids = css_pids(css);
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 	pids_uncharge(pids, 1);
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 }