linux-kernel - [PATCH] acct: fix build warning when ACCT

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Message-ID: <20141001230653.GA25541@hercules>
Date:	Thu, 2 Oct 2014 00:06:53 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org
Cc:	Al Viro <viro@...iv.linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] acct: fix build warning when ACCT_VERSION != 3

struct pid_namespace *ns is used only when ACCT_VERSION is 3.

kernel/acct.c:475:24: warning: unused variable 'ns' [-Wunused-variable]

Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 kernel/acct.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/acct.c b/kernel/acct.c
index b4c667d22e79..5f277f5c5e29 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -472,7 +472,9 @@ static void do_acct_process(struct bsd_acct_struct *acct)
 	acct_t ac;
 	unsigned long flim;
 	const struct cred *orig_cred;
+#if ACCT_VERSION == 3
 	struct pid_namespace *ns = acct->ns;
+#endif
 	struct file *file = acct->file;
 
 	/*
-- 
2.1.0
--
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