linux-kernel - Re: [PATCH v5 07/11] vsprintf: Factor out %pV handler as va

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Date:   Wed, 25 Apr 2018 17:56:34 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Petr Mladek <pmladek@...e.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        "Tobin C . Harding" <me@...in.cc>, Joe Perches <joe@...ches.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Michal Hocko <mhocko@...e.cz>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 07/11] vsprintf: Factor out %pV handler as va_format()

On Wed, 2018-04-25 at 13:12 +0200, Petr Mladek wrote:
> Move the code from the long pointer() function. We are going to add a
> check
> for the access to the address that will make it even more complicated.
> 
> This patch does not change the existing behavior.
 
> +static char *va_format(char *buf, char *end, struct va_format
> *va_fmt)
> +{
> +	va_list va;
> +
> +	va_copy(va, *va_fmt->va);

> +	buf += vsnprintf(buf, end > buf ? end - buf : 0,
> +			 va_fmt->fmt, va);

One line?

> +	va_end(va);
> +
> +	return buf;
> +}

-- 
Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Intel Finland Oy