From 5bf5e464f1acb1c031b4a290d63760bcb074c027 Mon Sep 17 00:00:00 2001
From: Pavel Begunkov <asml.silence@gmail.com>
Date: Sat, 10 Oct 2020 18:34:05 +0100
Subject: [PATCH] io_uring: don't io_prep_async_work() linked reqs

There is no real reason left for preparing io-wq work context for linked
requests in advance, remove it as this might become a bottleneck in some
cases.

Reported-by: Roman Gershman <romger@amazon.com>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 fs/io_uring.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 09494ca1b990..272abe03a79e 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -5672,9 +5672,6 @@ static int io_req_defer_prep(struct io_kiocb *req,
 	ret = io_prep_work_files(req);
 	if (unlikely(ret))
 		return ret;
-
-	io_prep_async_work(req);
-
 	return io_req_prep(req, sqe);
 }