linux-kernel - [PATCH v3 3/5] mm: refactor unregister_cpu_under

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Date:	Tue, 10 Nov 2009 15:36:54 -0700
From:	Alex Chiang <achiang@...com>
To:	akpm@...ux-foundation.org
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 3/5] mm: refactor unregister_cpu_under_node()

By returning early if the node is not online, we can unindent the
interesting code by two levels.

No functional change.

Signed-off-by: Alex Chiang <achiang@...com>
---

 drivers/base/node.c |   18 ++++++++++++------
 1 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/drivers/base/node.c b/drivers/base/node.c
index ef7dd22..ffda067 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -243,12 +243,18 @@ int register_cpu_under_node(unsigned int cpu, unsigned int nid)
 
 int unregister_cpu_under_node(unsigned int cpu, unsigned int nid)
 {
-	if (node_online(nid)) {
-		struct sys_device *obj = get_cpu_sysdev(cpu);
-		if (obj)
-			sysfs_remove_link(&node_devices[nid].sysdev.kobj,
-					 kobject_name(&obj->kobj));
-	}
+	struct sys_device *obj;
+
+	if (!node_online(nid))
+		return 0;
+
+	obj = get_cpu_sysdev(cpu);
+	if (!obj)
+		return 0;
+
+	sysfs_remove_link(&node_devices[nid].sysdev.kobj,
+			  kobject_name(&obj->kobj));
+
 	return 0;
 }
 

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