diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/acct.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/kernel/acct.c b/kernel/acct.c index 0feba97e114..dd68b905941 100644 --- a/kernel/acct.c +++ b/kernel/acct.c @@ -657,7 +657,8 @@ static void acct_process_in_ns(struct pid_namespace *ns) } /** - * acct_process - now just a wrapper around do_acct_process + * acct_process - now just a wrapper around acct_process_in_ns, + * which in turn is a wrapper around do_acct_process. * * handles process accounting for an exiting task */ @@ -665,6 +666,11 @@ void acct_process(void) { struct pid_namespace *ns; + /* + * This loop is safe lockless, since current is still + * alive and holds its namespace, which in turn holds + * its parent. + */ for (ns = task_active_pid_ns(current); ns != NULL; ns = ns->parent) acct_process_in_ns(ns); } |