linux-kernel - [PATCH v2] kernel/acct.c: cleanup, also better to set related variable to NULL after kfree

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Date:	Mon, 13 May 2013 10:16:07 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	Jeff Layton <jlayton@...hat.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Serge Hallyn <serge.hallyn@...onical.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH v2] kernel/acct.c: cleanup, also better to set related variable
 to NULL after kfree


After kfree acct, also better to set ns->bacct to NULL.

Currently, it is as a cleanup patch.


Signed-off-by: Chen Gang <gang.chen@...anux.com>
---
 kernel/acct.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/kernel/acct.c b/kernel/acct.c
index 85389fe..91a23eb 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -332,6 +332,7 @@ void acct_exit_ns(struct pid_namespace *ns)
 	spin_lock(&acct_lock);
 	if (acct->file != NULL)
 		acct_file_reopen(acct, NULL, NULL);
+	ns->bacct = NULL;
 	spin_unlock(&acct_lock);
 
 	kfree(acct);
-- 
1.7.7.6
--
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