Use task_pid_nr() instead of pid_nr(task_pid())

There are two places that do so - the cgroups subsystem and the autofs
code.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Cc: Ian Kent <raven@themaw.net>
Cc: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

fs/autofs/root.c

@@ -214,7 +214,7 @@ static struct dentry *autofs_root_lookup(struct inode *dir, struct dentry *dentr
 
 	oz_mode = autofs_oz_mode(sbi);
 	DPRINTK(("autofs_lookup: pid = %u, pgrp = %u, catatonic = %d, "
-				"oz_mode = %d\n", pid_nr(task_pid(current)),
+				"oz_mode = %d\n", task_pid_nr(current),
 				task_pgrp_nr(current), sbi->catatonic,
 				oz_mode));
 

kernel/cgroup.c

@@ -1763,7 +1763,7 @@ static int pid_array_load(pid_t *pidarray, int npids, struct cgroup *cont)
 	while ((tsk = cgroup_iter_next(cont, &it))) {
 		if (unlikely(n == npids))
 			break;
-		pidarray[n++] = pid_nr(task_pid(tsk));
+		pidarray[n++] = task_pid_nr(tsk);
 	}
 	cgroup_iter_end(cont, &it);
 	return n;