From: Uladzislau Rezki <urezki@xxxxxxxxx>
call_rcu() changes to save power will slow down RCU workqueue items
queued via queue_rcu_work(). This may not be an issue, however we cannot
assume that workqueue users are OK with long delays. Use
call_rcu_flush() API instead which reverts to the old behavior.
Signed-off-by: Uladzislau Rezki <urezki@xxxxxxxxx>
Signed-off-by: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx>
---
kernel/workqueue.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index aeea9731ef80..fe1146d97f1a 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -1771,7 +1771,7 @@ bool queue_rcu_work(struct workqueue_struct *wq, struct rcu_work *rwork)
if (!test_and_set_bit(WORK_STRUCT_PENDING_BIT, work_data_bits(work))) {
rwork->wq = wq;
- call_rcu(&rwork->rcu, rcu_work_rcufn);
+ call_rcu_flush(&rwork->rcu, rcu_work_rcufn);
return true;
}
--
2.38.0.413.g74048e4d9e-goog
