Subject: Re: remove unnecessary brackets

From: Willy Tarreau <[email-masked]>
Date: Mon, 24 May 2021 06:43:04 +0200

On Mon, May 24, 2021 at 11:58:43AM +0800, dzp wrote:
> hi list,
>     this patch remove unnecessary brackets for ipv4/tcp_output.c
> 
> best regards
> 
> 
> From d736a5e4a966bbffed90a0647719dde750b29d06 Mon Sep 17 00:00:00 2001
> From: Zhiping du <[email-masked]>
> Date: Mon, 24 May 2021 03:37:36 +0800
> Subject: [PATCH] ipv4:tcp_output:remove unnecessary brackets
> 
> There are too many brackets. Maybe only one bracket is enough.
> 
> Signed-off-by: Zhiping Du <[email-masked]>
> 
> diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
> index bde781f..5455de3 100644
> --- a/net/ipv4/tcp_output.c
> +++ b/net/ipv4/tcp_output.c
> @@ -2620,7 +2620,7 @@ static bool tcp_write_xmit(struct sock *sk, unsigned int mss_now, int nonagle,
>  	}
>  
>  	max_segs = tcp_tso_segs(sk, mss_now);
> -	while ((skb = tcp_send_head(sk))) {
> +	while (skb = tcp_send_head(sk)) {

Please do not do this. They're here to avoid a compiler warning which
will suggest that it might be a "==" instead of "=", or will ask to add
extra parenthesis.

You've probably seen it when you compiled your patched code.

Willy