linux-kernel - Re: [PATCH 01/24] kobject: return actual error on kset_create_and

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Message-ID: <alpine.DEB.2.11.1406171057270.20610@gentwo.org>
Date:	Tue, 17 Jun 2014 11:00:25 -0500 (CDT)
From:	Christoph Lameter <cl@...two.org>
To:	Greg KH <gregkh@...uxfoundation.org>
cc:	Jeff Liu <jeff.liu@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Pekka Enberg <penberg@...nel.org>,
	Matt Mackall <mpm@...enic.com>, benh@...nel.crashing.org,
	paulus@...ba.org, schwidefsky@...ibm.com,
	heiko.carstens@...ibm.com, herbert@...dor.apana.org.au,
	davem@...emloft.net, stefanr@...6.in-berlin.de, joro@...tes.org,
	jejb@...isc-linux.org, deller@....de, bhelgaas@...gle.com,
	clm@...com, Josef Bacik <jbacik@...com>, swhiteho@...hat.com,
	bharrosh@...asas.com, bhalevy@...marydata.com, ccaulfie@...hat.com,
	teigland@...hat.com, Theodore Ts'o <tytso@....edu>,
	adilger.kernel@...ger.ca, jaegeuk@...nel.org,
	cm224.lee@...sung.com, Mark Fasheh <mfasheh@...e.com>,
	Joel Becker <jlbec@...lplan.org>, casey@...aufler-ca.com,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 01/24] kobject: return actual error on
 kset_create_and_add

On Tue, 17 Jun 2014, Greg KH wrote:

> Who really cares about that?  What can do you do with that additional
> information that will help anything out?

The obvious reason for doing so is so that one can put the error code into
a log message to get more detailed information on why the call failed.

In this particular case the slab allocator can give an error message that
gives a hint why the sysfs support could not be enabled.


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