linux-kernel - [PATCH 3/4] io_uring: set @poll->file after @poll init

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Message-Id: <663d6d6c6f3d1c8ddde158f7c171d3a2034c5453.1592733956.git.asml.silence@gmail.com>
Date:   Sun, 21 Jun 2020 13:09:52 +0300
From:   Pavel Begunkov <asml.silence@...il.com>
To:     Jens Axboe <axboe@...nel.dk>, io-uring@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 3/4] io_uring: set @poll->file after @poll init

It's a good practice to modify fields of a struct after but not before
it was initialised. Even though io_init_poll_iocb() doesn't touch
poll->file, call it first.

Signed-off-by: Pavel Begunkov <asml.silence@...il.com>
---
 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 84b39109bc30..676911260f60 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -4585,8 +4585,8 @@ static __poll_t __io_arm_poll_handler(struct io_kiocb *req,
 	struct io_ring_ctx *ctx = req->ctx;
 	bool cancel = false;
 
-	poll->file = req->file;
 	io_init_poll_iocb(poll, mask, wake_func);
+	poll->file = req->file;
 	poll->wait.private = req;
 
 	ipt->pt._key = mask;
-- 
2.24.0