From f6c7e0cbc0abf626caa857d8540e4a9eba63d67d Mon Sep 17 00:00:00 2001
From: Pavel Begunkov <asml.silence@gmail.com>
Date: Thu, 15 Apr 2021 17:33:42 +0800
Subject: [PATCH] io_uring: remove redundant check

mainline inclusion
from mainline-5.5-rc1
commit f70193d6d8cad4cc614223fef349e6ea9d48c61f
category: feature
bugzilla: https://bugzilla.openeuler.org/show_bug.cgi?id=27
CVE: NA
---------------------------

Pass any IORING_OP_LINK_TIMEOUT request further, where it will
eventually fail in io_issue_sqe().

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: yangerkun <yangerkun@huawei.com>
Reviewed-by: zhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: Cheng Jian <cj.chengjian@huawei.com>
---
 fs/io_uring.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 3e223d0cd26b..b96dc17afd75 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -3078,10 +3078,6 @@ static void io_submit_sqe(struct io_kiocb *req, struct io_submit_state *state,
 
 		INIT_LIST_HEAD(&req->link_list);
 		*link = req;
-	} else if (READ_ONCE(s->sqe->opcode) == IORING_OP_LINK_TIMEOUT) {
-		/* Only valid as a linked SQE */
-		ret = -EINVAL;
-		goto err_req;
 	} else {
 		io_queue_sqe(req);
 	}
-- 
GitLab