linux-kernel - Re: sscanf: implement basic character sets

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Message-Id: <20160223212847.905209b6.akpm@linux-foundation.org>
Date:	Tue, 23 Feb 2016 21:28:47 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Jessica Yu <jeyu@...hat.com>
Cc:	Rasmus Villemoes <linux@...musvillemoes.dk>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Kees Cook <keescook@...omium.org>, linux-kernel@...r.kernel.org
Subject: Re: sscanf: implement basic character sets

On Wed, 24 Feb 2016 00:13:47 -0500 Jessica Yu <jeyu@...hat.com> wrote:

> >> This patch adds support for the '%[' conversion specifier for sscanf().
> >> This is useful in cases where we'd like to match substrings delimited by
> >> something other than spaces. The original motivation for this patch
> >> actually came from a livepatch discussion (See: https://lkml.org/lkml/2016/2/8/790),
> >> where we were trying to come up with a clean way to parse symbol names with
> >> substrings delimited by periods and commas.
> >
> > It would be better to include the justification right here in the
> > changelog please. 
> > Not via some link-to-discussion and definitely not
> > below the ^--- marker!  It's very important.
> 
> Thanks for the corrections Andrew. I am however slightly confused, are
> you suggesting that I should provide a much more thorough explanation
> about the motivation here in the changelog (below the ^--- marker), or
> would this be better suited for a (separate) cover letter?

Just in the plain old changelog is good - if it was in [0/n] I'd only
move it into the changelog anyway.

And 99.9% of the stuff people put below ^--- is useful so I always end
up moving that into the changelog as well...