linux-kernel - Re: staging: lustre: One function call less in class_register

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Date:	Tue, 26 Jul 2016 21:56:20 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Oleg Drokin <oleg.drokin@...el.com>
Cc:	devel@...verdev.osuosl.org, lustre-devel@...ts.lustre.org,
	Andreas Dilger <andreas.dilger@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>,
	Bhumika Goyal <bhumirks@...il.com>
Subject: Re: staging: lustre: One function call less in class_register_type()
 after error detection

> But kobject_put() already checks for NULL, right?

Yes. - Such an input parameter validation is performed by the
function implementation.

> you just submitted another batch about that in other area.

I sent update suggestions because of this function property for two
Linux software modules in the year 2015.

>> Adjust jump targets according to the Linux coding style convention.
> 
> Not that I am totally against this patch,

Thanks for your feedback.

> but when we do not need the extra checks, a single jump target is ok too in my mind

A single goto label will look convenient for a while. It will often work
for several use cases.

> (extra benefit - there's not going to be any chance of a mistake to where to jump to).

I have got an other opinion when you would like to care for a bit
more software efficiency.

> And when we have a single jump target, there's no supersmart naming
> like free_this_and_that_and_that_other_thing_too.

How often do you care for efficient exception handling in the shown
function implementations?

Regards,
Markus