pid: change bacct_add_tsk() to use task_ppid_nr_ns()

to simplify the code.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Link: https://lore.kernel.org/20250810173615.GA20000@redhat.com
Signed-off-by: Christian Brauner <brauner@kernel.org>

diff --git a/kernel/tsacct.c b/kernel/tsacct.c
index 16b283f9d8314122723b1c8d5dc95529e71beaa3..6ea2f6363b90899c8b694fb2e3aef1bd98a96f66 100644 (file)
--- a/kernel/tsacct.c
+++ b/kernel/tsacct.c
@@ -57,12 +57,11 @@ void bacct_add_tsk(struct user_namespace *user_ns,
        stats->ac_sched  = tsk->policy;
        stats->ac_pid    = task_pid_nr_ns(tsk, pid_ns);
        stats->ac_tgid   = task_tgid_nr_ns(tsk, pid_ns);
+       stats->ac_ppid   = task_ppid_nr_ns(tsk, pid_ns);
        rcu_read_lock();
        tcred = __task_cred(tsk);
        stats->ac_uid    = from_kuid_munged(user_ns, tcred->uid);
        stats->ac_gid    = from_kgid_munged(user_ns, tcred->gid);
-       stats->ac_ppid   = pid_alive(tsk) ?
-               task_tgid_nr_ns(rcu_dereference(tsk->real_parent), pid_ns) : 0;
        rcu_read_unlock();
 
        task_cputime(tsk, &utime, &stime);