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From:   cgel.zte@gmail.com
To:     axboe@kernel.dk
Cc:     asml.silence@gmail.com, io-uring@vger.kernel.org,
        linux-kernel@vger.kernel.org, Minghao Chi <chi.minghao@zte.com.cn>,
        Zeal Robot <zealci@zte.com.cn>
Subject: [PATCH] io_uring: Remove redundant NULL check before kfree
Date:   Thu,  2 Jun 2022 07:18:41 +0000
Message-Id: <20220602071841.278214-1-chi.minghao@zte.com.cn>
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From: Minghao Chi <chi.minghao@zte.com.cn>

kfree on NULL pointer is a no-op.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
---
 fs/io_uring.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/io_uring.c b/fs/io_uring.c
index 1fc0166d9133..d1fe967f2343 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -4445,8 +4445,7 @@ static int io_read(struct io_kiocb *req, unsigned int issue_flags)
 	kiocb_done(req, ret, issue_flags);
 out_free:
 	/* it's faster to check here then delegate to kfree */
-	if (iovec)
-		kfree(iovec);
+	kfree(iovec);
 	return 0;
 }
 
-- 
2.25.1