VisionFive2 Linux kernel

StarFive Tech Linux Kernel for VisionFive (JH7110) boards (mirror)

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author: Jens Axboe <axboe@kernel.dk> 2021-03-21 07:06:56 -0600 committer: Jens Axboe <axboe@kernel.dk> 2021-03-21 09:41:14 -0600 commit: 00ddff431a458bbf143ea7c4c42d022676da1b17 parent: 4db4b1a0d1779dc159f7b87feb97030ec0b12597
Commit Summary:
io-wq: ensure task is running before processing task_work
Diffstat:
1 file changed, 6 insertions, 2 deletions
diff --git a/fs/io-wq.c b/fs/io-wq.c
index e05f996d088f..3dc10bfd8c3b 100644
--- a/fs/io-wq.c
+++ b/fs/io-wq.c
@@ -386,13 +386,16 @@ static struct io_wq_work *io_get_next_work(struct io_wqe *wqe)
 	return NULL;
 }
 
-static void io_flush_signals(void)
+static bool io_flush_signals(void)
 {
 	if (unlikely(test_tsk_thread_flag(current, TIF_NOTIFY_SIGNAL))) {
+		__set_current_state(TASK_RUNNING);
 		if (current->task_works)
 			task_work_run();
 		clear_tsk_thread_flag(current, TIF_NOTIFY_SIGNAL);
+		return true;
 	}
+	return false;
 }
 
 static void io_assign_current_work(struct io_worker *worker,
@@ -499,7 +502,8 @@ loop:
 		}
 		__io_worker_idle(wqe, worker);
 		raw_spin_unlock_irq(&wqe->lock);
-		io_flush_signals();
+		if (io_flush_signals())
+			continue;
 		ret = schedule_timeout(WORKER_IDLE_TIMEOUT);
 		if (try_to_freeze() || ret)
 			continue;