diff options
| -rw-r--r-- | kernel/cgroup/legacy_freezer.c | 8 | ||||
| -rw-r--r-- | kernel/freezer.c | 15 |
2 files changed, 4 insertions, 19 deletions
diff --git a/kernel/cgroup/legacy_freezer.c b/kernel/cgroup/legacy_freezer.c index 507b8f19a262..dd9417425d92 100644 --- a/kernel/cgroup/legacy_freezer.c +++ b/kernel/cgroup/legacy_freezer.c @@ -66,15 +66,9 @@ static struct freezer *parent_freezer(struct freezer *freezer) bool cgroup_freezing(struct task_struct *task) { bool ret; - unsigned int state; rcu_read_lock(); - /* Check if the cgroup is still FREEZING, but not FROZEN. The extra - * !FROZEN check is required, because the FREEZING bit is not cleared - * when the state FROZEN is reached. - */ - state = task_freezer(task)->state; - ret = (state & CGROUP_FREEZING) && !(state & CGROUP_FROZEN); + ret = task_freezer(task)->state & CGROUP_FREEZING; rcu_read_unlock(); return ret; diff --git a/kernel/freezer.c b/kernel/freezer.c index 8d530d0949ff..6a96149aede9 100644 --- a/kernel/freezer.c +++ b/kernel/freezer.c @@ -201,18 +201,9 @@ static int __restore_freezer_state(struct task_struct *p, void *arg) void __thaw_task(struct task_struct *p) { - unsigned long flags; - - spin_lock_irqsave(&freezer_lock, flags); - if (WARN_ON_ONCE(freezing(p))) - goto unlock; - - if (!frozen(p) || task_call_func(p, __restore_freezer_state, NULL)) - goto unlock; - - wake_up_state(p, TASK_FROZEN); -unlock: - spin_unlock_irqrestore(&freezer_lock, flags); + guard(spinlock_irqsave)(&freezer_lock); + if (frozen(p) && !task_call_func(p, __restore_freezer_state, NULL)) + wake_up_state(p, TASK_FROZEN); } /** |