linux-kernel - Re: [PATCH] aio: Cleanup unnecessary test for nr

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Date:	Mon, 20 Jun 2016 22:05:45 +0800
From:	Minfei Huang <mnghuan@...il.com>
To:	viro@...iv.linux.org.uk, bcrl@...ck.org
Cc:	linux-fsdevel@...r.kernel.org, linux-aio@...ck.org,
	linux-kernel@...r.kernel.org, minfei.hmf@...baba-inc.com
Subject: Re: [PATCH] aio: Cleanup unnecessary test for nr_pages

Ping. Any comment is appreciate.

Thanks
Minfei

On 06/13/16 at 12:33P, Minfei Huang wrote:
> The variable nr_pages is always more than 1, because the size of
> structure aio_ring is bigger than 0. So remove unnecessary test for
> nr_page.
> 
> Signed-off-by: Minfei Huang <mnghuan@...il.com>
> ---
>  fs/aio.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/fs/aio.c b/fs/aio.c
> index fb8e45b..ec05137 100644
> --- a/fs/aio.c
> +++ b/fs/aio.c
> @@ -450,8 +450,6 @@ static int aio_setup_ring(struct kioctx *ctx)
>  	size += sizeof(struct io_event) * nr_events;
>  
>  	nr_pages = PFN_UP(size);
> -	if (nr_pages < 0)
> -		return -EINVAL;
>  
>  	file = aio_private_file(ctx, nr_pages);
>  	if (IS_ERR(file)) {
> -- 
> 2.7.4 (Apple Git-66)
>