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 9d3d8d3..92c7e2a 100644 (file)
--- 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;
 }