linux-kernel - Re: [PATCH v3] staging: lustre: fix coding style errors

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Date:	Tue, 10 Feb 2015 08:52:36 +0800
From:	"<gregkh@...uxfoundation.org>" <gregkh@...uxfoundation.org>
To:	"Drokin, Oleg" <oleg.drokin@...el.com>
Cc:	Tal Shorer <tal.shorer@...il.com>,
	Dan Carpenter <dan.carpenter@...cle.com>,
	"<devel@...verdev.osuosl.org>" <devel@...verdev.osuosl.org>,
	"Dilger, Andreas" <andreas.dilger@...el.com>,
	"<linux-kernel@...r.kernel.org>" <linux-kernel@...r.kernel.org>,
	"<clabbe.montjoie@...il.com>" <clabbe.montjoie@...il.com>
Subject: Re: [PATCH v3] staging: lustre: fix coding style errors

On Tue, Feb 10, 2015 at 12:34:07AM +0000, Drokin, Oleg wrote:
> 
> On Feb 9, 2015, at 4:34 PM, <gregkh@...uxfoundation.org> wrote:
> >> There's a third coding style error in this file which I've chosen to
> >> not fix for clarity's sake. It is: initializing min_watchdog_ratelimit
> >> (static int) to 0
> > 
> > Please fix that too, it's not correct.  Drop the comment there if you
> > think that's confusing.
> 
> What's not correct there, I wonder? Just assignment of 0 to a static variable
> to get some extra clarity?
> The code in the question is:
> 
> static int min_watchdog_ratelimit = 0;    /* disable ratelimiting */
> static int max_watchdog_ratelimit = (24*60*60); /* limit to once per day */
> 
> So if you drop both = 0 and the comment, I think it would become even more cryptic?
> 
> How about something like this then (not a proper patch, but just to demonstrate
> the idea):
> 
> --- a/drivers/staging/lustre/lustre/libcfs/linux/linux-proc.c
> +++ b/drivers/staging/lustre/lustre/libcfs/linux/linux-proc.c
> @@ -165,7 +165,7 @@ static int proc_dobitmasks(struct ctl_table *table, int write,
>                                  __proc_dobitmasks);
>  }
>  
> -static int min_watchdog_ratelimit = 0;   /* disable ratelimiting */
> +static int zero;
>  static int max_watchdog_ratelimit = (24*60*60); /* limit to once per day */

Ick, no, just do like other places have done:
  static int min_watchdog_ratelimit;	/* = 0 disable ratelimiting */

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