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Date:   Sun, 27 Aug 2023 21:47:05 +0100
From:   Matthew Wilcox <willy@infradead.org>
To:     Hao Xu <hao.xu@linux.dev>
Cc:     io-uring@vger.kernel.org, Jens Axboe <axboe@kernel.dk>,
        Dominique Martinet <asmadeus@codewreck.org>,
        Pavel Begunkov <asml.silence@gmail.com>,
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Subject: Re: [PATCH 04/11] vfs: add a vfs helper for io_uring file pos lock
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References: <20230827132835.1373581-1-hao.xu@linux.dev>
 <20230827132835.1373581-5-hao.xu@linux.dev>
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On Sun, Aug 27, 2023 at 09:28:28PM +0800, Hao Xu wrote:
> +++ b/include/linux/file.h
> @@ -81,6 +81,8 @@ static inline void fdput_pos(struct fd f)
>  	fdput(f);
>  }
>  
> +extern int file_pos_lock_nowait(struct file *file, bool nowait);

No extern on function declarations.