From 3b994d98a815d934ab6a77a380882865982c14f9 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Sat, 10 Jan 2015 17:18:37 -0500
Subject: [PATCH] get rid of the second argument of acct_kill()

Replace the old ns->bacct only with NULL and only if it still points
to acct.  And assign the new value to it *before* calling acct_kill()
in acct_on().  That way we don't need to pass the new acct to acct_kill().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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