linux-kernel - [patch 00/24] lib/kobject: kset_create_and

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Date:	Tue, 17 Jun 2014 22:25:30 +0800
From:	Jeff Liu <jeff.liu@...cle.com>
To:	gregkh@...uxfoundation.org
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Lameter <cl@...two.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: [patch 00/24] lib/kobject: kset_create_and_add return error clean
 up

Hello,

Currently, to verify if kset_create_and_add() is succeed or not, almost
all subsystems with sysfs support are check up the return value against
NULL, then return -ENOMEM on failure, since kset_create_and_add() always 
return NULL in case of anything wrong.  However, kset_register() can fail
due to other reasons, hence it's better to return the actual error on
kset_create_and_add(), this patch series is just did that and this is
inspired by Christoph in another thread:
http://www.spinics.net/lists/linux-mm/msg74729.html


Jeff Liu (24)
  kobject: return actual error on kset_create_and_add
  sample/kobject: update kset-example code
  slub: return actual error on sysfs_slab_add
  powerpc: check/return acutal error on sysfs init
  s390: check/return actual error on sysfs init
  crypt: return actual error code on pcrypt_init
  kernel: return actual error on param_sysfs_init
  drivers/firmware: return actual error on sysfs init
  drivers/iommu: check actual error on iommu_init
  drivers/base: return actual error on sysfs init
  drviers/scsi: check sysfs init return value via IS_ERR at iscsi_boot_create_kset
  drivers/parisc: return actual error on pdc_stable_init
  drivers/pci: return actual error on pci_slot_init
  drivers/s390: return actual error on sysfs init functions
  drivers/of: return actual error on of_init
  btrfs: return actual error on btrfs_init_sysfs
  gfs2: return actual error on gfs2_sys_init
  exofs: return actual error on exofs_sysfs_odev_add
  fs/dlm: return actual error on dlm_lockspace_init
  ext4: return actual error on ext4_init_fs
  f2fs: return actual error on init_f2fs_fs
  ocfs2: return actual error on sysfs init
  net: return actual error on register_queue_kobjects
  security/smack: return acutal error on smk_init_sysfs


Cheers,
-Jeff
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