io-wq: add cond_resched() to worker thread
Reschedule the current IO worker to cut the risk that it is becoming
a cpu hog.
Signed-off-by: Hillf Danton <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
diff --git a/fs/io-wq.c b/fs/io-wq.c
index a1c85458..541c8a3 100644
--- a/fs/io-wq.c
+++ b/fs/io-wq.c
@@ -429,6 +429,8 @@ static void io_worker_handle_work(struct io_worker *worker)
if (signal_pending(current))
flush_signals(current);
+ cond_resched();
+
spin_lock_irq(&worker->lock);
worker->cur_work = work;
spin_unlock_irq(&worker->lock);
