From c810acfa216f8c1fa40b35d32ff53566c47a31b2 Mon Sep 17 00:00:00 2001
From: Pavel Begunkov <asml.silence@gmail.com>
Date: Thu, 15 Apr 2021 17:36:25 +0800
Subject: [PATCH] io_uring: remove extra ->file check

mainline inclusion
from mainline-5.6-rc1
commit 9250f9ee194dc3dcee28a42a1533fa2cc0edd215
category: feature
bugzilla: https://bugzilla.openeuler.org/show_bug.cgi?id=27
CVE: NA
---------------------------

It won't ever get into io_prep_rw() when req->file haven't been set in
io_req_set_file(), hence remove the check.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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 | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 63261cd05831..e21e647ae30a 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -1857,9 +1857,6 @@ static int io_prep_rw(struct io_kiocb *req, const struct io_uring_sqe *sqe,
 	unsigned ioprio;
 	int ret;
 
-	if (!req->file)
-		return -EBADF;
-
 	if (S_ISREG(file_inode(req->file)->i_mode))
 		req->flags |= REQ_F_ISREG;
 
-- 
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