From: Pavel Begunkov <asml.silence@gmail.com>
Date: Mon, 29 Jun 2020 09:59:48 +0000 (+0300)
Subject: io_uring: fix missing wake_up io_rw_reissue()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=fb49278624f75e15d36c3c43d322ca8961fb40e9;p=linux.git

io_uring: fix missing wake_up io_rw_reissue()

Don't forget to wake up a process to which io_rw_reissue() added
task_work.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 9d3d8d3866cc1..92c7e2a96912b 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2168,8 +2168,10 @@ static bool io_rw_reissue(struct io_kiocb *req, long res)
 	tsk = req->task;
 	init_task_work(&req->task_work, io_rw_resubmit);
 	ret = task_work_add(tsk, &req->task_work, true);
-	if (!ret)
+	if (!ret) {
+		wake_up_process(tsk);
 		return true;
+	}
 #endif
 	return false;
 }