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acct: eliminate compile warning 

If ACCT_VERSION is not defined to 3, below warning appears:
  CC      kernel/acct.o
  kernel/acct.c: In function `do_acct_process':
  kernel/acct.c:475:24: warning: unused variable `ns' [-Wunused-variable]

[akpm@linux-foundation.org: retain the local for code size improvements
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Ying Xue 2014-10-09 15:30:21 -07:00 committed by Linus Torvalds
parent 27fb10edca
commit 067b722faf
1 changed files with 9 additions and 5 deletions
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14
kernel/acct.c
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@ -472,7 +472,6 @@ static void do_acct_process(struct bsd_acct_struct *acct)
acct_t ac;
unsigned long flim;
const struct cred *orig_cred;
struct pid_namespace *ns = acct->ns;
struct file *file = acct->file;
/*
@ -500,10 +499,15 @@ static void do_acct_process(struct bsd_acct_struct *acct)
ac.ac_gid16 = ac.ac_gid;
#endif
#if ACCT_VERSION == 3
ac.ac_pid = task_tgid_nr_ns(current, ns);
rcu_read_lock();
ac.ac_ppid = task_tgid_nr_ns(rcu_dereference(current->real_parent), ns);
rcu_read_unlock();
{
struct pid_namespace *ns = acct->ns;
ac.ac_pid = task_tgid_nr_ns(current, ns);
rcu_read_lock();
ac.ac_ppid = task_tgid_nr_ns(rcu_dereference(current->real_parent),
ns);
rcu_read_unlock();
}
#endif
/*
* Get freeze protection. If the fs is frozen, just skip the write