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-rw-r--r--fs/exec.c2
-rw-r--r--fs/proc/proc_misc.c3
-rw-r--r--include/linux/pid_namespace.h5
-rw-r--r--kernel/nsproxy.c2
-rw-r--r--kernel/pid.c4
5 files changed, 11 insertions, 5 deletions
diff --git a/fs/exec.c b/fs/exec.c
index 0b09447..6ffb769 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -776,7 +776,7 @@ static int de_thread(struct task_struct *tsk)
* so it is safe to do it under read_lock.
*/
if (unlikely(tsk->group_leader == child_reaper(tsk)))
- tsk->nsproxy->pid_ns->child_reaper = tsk;
+ task_active_pid_ns(tsk)->child_reaper = tsk;
zap_other_threads(tsk);
read_unlock(&tasklist_lock);
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index d6dc72c..e0d064e 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -91,7 +91,8 @@ static int loadavg_read_proc(char *page, char **start, off_t off,
LOAD_INT(a), LOAD_FRAC(a),
LOAD_INT(b), LOAD_FRAC(b),
LOAD_INT(c), LOAD_FRAC(c),
- nr_running(), nr_threads, current->nsproxy->pid_ns->last_pid);
+ nr_running(), nr_threads,
+ task_active_pid_ns(current)->last_pid);
return proc_calc_metrics(page, start, off, count, eof, len);
}
diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h
index c471c0c..d10cb5f 100644
--- a/include/linux/pid_namespace.h
+++ b/include/linux/pid_namespace.h
@@ -39,6 +39,11 @@ static inline void put_pid_ns(struct pid_namespace *ns)
kref_put(&ns->kref, free_pid_ns);
}
+static inline struct pid_namespace *task_active_pid_ns(struct task_struct *tsk)
+{
+ return tsk->nsproxy->pid_ns;
+}
+
static inline struct task_struct *child_reaper(struct task_struct *tsk)
{
return init_pid_ns.child_reaper;
diff --git a/kernel/nsproxy.c b/kernel/nsproxy.c
index ac99837..e981c61 100644
--- a/kernel/nsproxy.c
+++ b/kernel/nsproxy.c
@@ -87,7 +87,7 @@ static struct nsproxy *create_new_namespaces(unsigned long flags,
goto out_ipc;
}
- new_nsp->pid_ns = copy_pid_ns(flags, tsk->nsproxy->pid_ns);
+ new_nsp->pid_ns = copy_pid_ns(flags, task_active_pid_ns(tsk));
if (IS_ERR(new_nsp->pid_ns)) {
err = PTR_ERR(new_nsp->pid_ns);
goto out_pid;
diff --git a/kernel/pid.c b/kernel/pid.c
index 42de9af..78c0dbf 100644
--- a/kernel/pid.c
+++ b/kernel/pid.c
@@ -214,7 +214,7 @@ struct pid *alloc_pid(void)
int nr = -1;
struct pid_namespace *ns;
- ns = current->nsproxy->pid_ns;
+ ns = task_active_pid_ns(current);
pid = kmem_cache_alloc(ns->pid_cachep, GFP_KERNEL);
if (!pid)
goto out;
@@ -364,7 +364,7 @@ struct pid *find_ge_pid(int nr)
pid = find_pid(nr);
if (pid)
break;
- nr = next_pidmap(current->nsproxy->pid_ns, nr);
+ nr = next_pidmap(task_active_pid_ns(current), nr);
} while (nr > 0);
return pid;
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