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From: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
To: jens.axboe@oracle.com, agk@redhat.com,
James.Bottomley@HansenPartnership.com
Cc: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org,
dm-devel@redhat.com, j-nomura@ce.jp.nec.com,
k-ueda@ct.jp.nec.com
Subject: [PATCH 07/13] dm: tidy local_init
Date: Fri, 12 Sep 2008 10:44:55 -0400 (EDT) [thread overview]
Message-ID: <20080912.104455.27955868.k-ueda@ct.jp.nec.com> (raw)
In-Reply-To: <20080912.103814.74754581.k-ueda@ct.jp.nec.com>
This patch tidies local_init() as preparation for another patch
(PATCH 08), which creates some kmem_cache for request-based dm.
No functional change.
This patch is just a clean up of the codes and not functionally
related to request-based dm. But included here due to literal
dependency.
Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com>
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Cc: Alasdair G Kergon <agk@redhat.com>
---
drivers/md/dm.c | 34 +++++++++++++++++-----------------
1 files changed, 17 insertions(+), 17 deletions(-)
Index: 2.6.27-rc6/drivers/md/dm.c
===================================================================
--- 2.6.27-rc6.orig/drivers/md/dm.c
+++ 2.6.27-rc6/drivers/md/dm.c
@@ -150,40 +150,40 @@ static struct kmem_cache *_tio_cache;
static int __init local_init(void)
{
- int r;
+ int r = -ENOMEM;
/* allocate a slab for the dm_ios */
_io_cache = KMEM_CACHE(dm_io, 0);
if (!_io_cache)
- return -ENOMEM;
+ return r;
/* allocate a slab for the target ios */
_tio_cache = KMEM_CACHE(dm_target_io, 0);
- if (!_tio_cache) {
- kmem_cache_destroy(_io_cache);
- return -ENOMEM;
- }
+ if (!_tio_cache)
+ goto out_free_io_cache;
r = dm_uevent_init();
- if (r) {
- kmem_cache_destroy(_tio_cache);
- kmem_cache_destroy(_io_cache);
- return r;
- }
+ if (r)
+ goto out_free_tio_cache;
_major = major;
r = register_blkdev(_major, _name);
- if (r < 0) {
- kmem_cache_destroy(_tio_cache);
- kmem_cache_destroy(_io_cache);
- dm_uevent_exit();
- return r;
- }
+ if (r < 0)
+ goto out_uevent_exit;
if (!_major)
_major = r;
return 0;
+
+out_uevent_exit:
+ dm_uevent_exit();
+out_free_tio_cache:
+ kmem_cache_destroy(_tio_cache);
+out_free_io_cache:
+ kmem_cache_destroy(_io_cache);
+
+ return r;
}
static void local_exit(void)
next prev parent reply other threads:[~2008-09-12 14:44 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-12 14:38 [PATCH 00/13] request-based dm-multipath Kiyoshi Ueda
2008-09-12 14:40 ` [PATCH 01/13] block: add request update interface Kiyoshi Ueda
2008-09-12 14:41 ` [PATCH 02/13] block: add request submission interface Kiyoshi Ueda
2008-09-14 13:10 ` Boaz Harrosh
2008-09-16 16:06 ` Kiyoshi Ueda
2008-09-16 17:02 ` Jens Axboe
2008-09-16 18:12 ` Kiyoshi Ueda
2008-09-12 14:42 ` [PATCH 03/13] mm: lld busy status exporting interface Kiyoshi Ueda
2008-09-12 14:43 ` [PATCH 04/13] scsi: exports busy status Kiyoshi Ueda
2008-09-12 14:43 ` [PATCH 05/13] block: add a queue flag for request stacking support Kiyoshi Ueda
2008-09-12 14:44 ` [PATCH 06/13] dm: remove unused DM_WQ_FLUSH_ALL Kiyoshi Ueda
2008-09-12 14:44 ` Kiyoshi Ueda [this message]
2008-09-12 14:45 ` [PATCH 08/13] dm: add kmem_cache for request-based dm Kiyoshi Ueda
2008-09-12 14:45 ` [PATCH 09/13] dm: add target interfaces " Kiyoshi Ueda
2008-09-12 14:46 ` [PATCH 10/13] dm: add core functions " Kiyoshi Ueda
2008-10-24 7:44 ` [dm-devel] " Nikanth K
2008-10-28 16:00 ` Kiyoshi Ueda
[not found] ` <490FB852.3FEE.00C5.1@novell.com>
[not found] ` <49102C03020000C50002E257@victor.provo.novell.com>
2008-11-04 15:01 ` Kiyoshi Ueda
2008-09-12 14:46 ` [PATCH 11/13] dm: enable " Kiyoshi Ueda
2008-10-24 7:52 ` [dm-devel] " Nikanth K
2008-10-28 16:02 ` Kiyoshi Ueda
2008-09-12 14:46 ` [PATCH 12/13] dm: reject I/O violating new queue limits Kiyoshi Ueda
2008-09-12 14:47 ` [PATCH 13/13] dm-mpath: convert to request-based Kiyoshi Ueda
2008-10-24 7:55 ` [dm-devel] " Nikanth K
2008-10-28 16:03 ` Kiyoshi Ueda
2008-09-14 13:17 ` [PATCH 00/13] request-based dm-multipath Jens Axboe
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