put_task_struct_many() is as put_task_struct() but puts several
references at once. Useful to batching it.

Signed-off-by: Pavel Begunkov <asml.sile...@gmail.com>
---
 include/linux/sched/task.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h
index 38359071236a..1301077f9c24 100644
--- a/include/linux/sched/task.h
+++ b/include/linux/sched/task.h
@@ -126,6 +126,12 @@ static inline void put_task_struct(struct task_struct *t)
                __put_task_struct(t);
 }
 
+static inline void put_task_struct_many(struct task_struct *t, int nr)
+{
+       if (refcount_sub_and_test(nr, &t->usage))
+               __put_task_struct(t);
+}
+
 void put_task_struct_rcu_user(struct task_struct *task);
 
 #ifdef CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT
-- 
2.24.0

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