From a6d45dd0d43e6d1275e002704540688b6768bc22 Mon Sep 17 00:00:00 2001
From: Pavel Begunkov <asml.silence@gmail.com>
Date: Sat, 27 Jun 2020 14:04:57 +0300
Subject: [PATCH] io_uring: don't mark link's head for_async

No reason to mark a head of a link as for-async in io_req_defer_prep().
grab_env(), etc. That will be done further during submission if
neccessary.

Mark for_async=false saving extra grab_env() in many cases.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 fs/io_uring.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 658949bed77fe..545b137c7b4a2 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -6092,7 +6092,7 @@ static int io_submit_sqe(struct io_kiocb *req, const struct io_uring_sqe *sqe,
 			if (io_alloc_async_ctx(req))
 				return -EAGAIN;
 
-			ret = io_req_defer_prep(req, sqe, true);
+			ret = io_req_defer_prep(req, sqe, false);
 			if (ret)
 				req->flags |= REQ_F_FAIL_LINK;
 			*link = req;
-- 
2.30.2