3 files changed, 11 insertions, 14 deletions

diff --git a/include/linux/pid.h b/include/linux/pid.h
index 061abb6c0796..b91f4732dc1b 100644
--- a/include/linux/pid.h
+++ b/include/linux/pid.h
@@ -127,9 +127,8 @@ extern void FASTCALL(free_pid(struct pid *pid));
  * the helpers to get the pid's id seen from different namespaces
  *
  * pid_nr()    : global id, i.e. the id seen from the init namespace;
- * pid_vnr()   : virtual id, i.e. the id seen from the namespace this pid
- *               belongs to. this only makes sence when called in the
- *               context of the task that belongs to the same namespace;
+ * pid_vnr()   : virtual id, i.e. the id seen from the pid namespace of
+ *               current.
  * pid_nr_ns() : id seen from the ns specified.
  *
  * see also task_xid_nr() etc in include/linux/sched.h
@@ -144,14 +143,7 @@ static inline pid_t pid_nr(struct pid *pid)
 }
 
 pid_t pid_nr_ns(struct pid *pid, struct pid_namespace *ns);
-
-static inline pid_t pid_vnr(struct pid *pid)
-{
-        pid_t nr = 0;
-        if (pid)
-                nr = pid->numbers[pid->level].nr;
-        return nr;
-}
+pid_t pid_vnr(struct pid *pid);
 
 #define do_each_pid_task(pid, type, task)                               \
         do {                                                            \
diff --git a/include/linux/sched.h b/include/linux/sched.h
index d1c9b7f1d51e..3deb6e5d3096 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1332,9 +1332,8 @@ struct pid_namespace;
  * from various namespaces
  *
  * task_xid_nr()     : global id, i.e. the id seen from the init namespace;
- * task_xid_vnr()    : virtual id, i.e. the id seen from the namespace the task
- *                     belongs to. this only makes sence when called in the
- *                     context of the task that belongs to the same namespace;
+ * task_xid_vnr()    : virtual id, i.e. the id seen from the pid namespace of
+ *                     current.
  * task_xid_nr_ns()  : id seen from the ns specified;
  *
  * set_task_vxid()   : assigns a virtual id to a task;
diff --git a/kernel/pid.c b/kernel/pid.c
index 939746fb4ce7..a32859c4a3cd 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -443,6 +443,12 @@ pid_t pid_nr_ns(struct pid *pid, struct pid_namespace *ns)
         return nr;
 }
 
+pid_t pid_vnr(struct pid *pid)
+{
+        return pid_nr_ns(pid, current->nsproxy->pid_ns);
+}
+EXPORT_SYMBOL_GPL(pid_vnr);
+
 pid_t task_pid_nr_ns(struct task_struct *tsk, struct pid_namespace *ns)
 {
         return pid_nr_ns(task_pid(tsk), ns);