linux-kernel - [PATCH 1/3][mmotm] kcore: more fixes for init

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Message-Id: <20090917114256.1f3971d8.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Thu, 17 Sep 2009 11:42:56 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc:	Am?rico_Wang <xiyou.wangcong@...il.com>,
	"Andrew Morton" <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: [PATCH 1/3][mmotm] kcore: more fixes for init

From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>

proc_kcore_init() doesn't check NULL case.
fix it and remove unnecessary comments.

Cc: WANG Cong <xiyou.wangcong@...il.com>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
---
 fs/proc/kcore.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Index: mmotm-2.6.31-Sep14/fs/proc/kcore.c
===================================================================
--- mmotm-2.6.31-Sep14.orig/fs/proc/kcore.c
+++ mmotm-2.6.31-Sep14/fs/proc/kcore.c
@@ -606,6 +606,10 @@ static int __init proc_kcore_init(void)
 {
 	proc_root_kcore = proc_create("kcore", S_IRUSR, NULL,
 				      &proc_kcore_operations);
+	if (!proc_root_kcore) {
+		printk(KERN_ERR "couldn't create /proc/kcore\n");
+		return 0; /* Always returns 0. */
+	}
 	/* Store text area if it's special */
 	proc_kcore_text_init();
 	/* Store vmalloc area */
@@ -615,7 +619,6 @@ static int __init proc_kcore_init(void)
 	/* Store direct-map area from physical memory map */
 	kcore_update_ram();
 	hotplug_memory_notifier(kcore_callback, 0);
-	/* Other special area, area-for-module etc is arch specific. */
 
 	return 0;
 }

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