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-rw-r--r--include/linux/sched/task.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h
index 4df2f9055587..0f2aeb37bbb0 100644
--- a/include/linux/sched/task.h
+++ b/include/linux/sched/task.h
@@ -120,6 +120,11 @@ static inline struct task_struct *get_task_struct(struct task_struct *t)
return t;
}
+static inline struct task_struct *tryget_task_struct(struct task_struct *t)
+{
+ return refcount_inc_not_zero(&t->usage) ? t : NULL;
+}
+
extern void __put_task_struct(struct task_struct *t);
extern void __put_task_struct_rcu_cb(struct rcu_head *rhp);