[NaCl SDK] Upate atomic ops in nacl_io

native_client_sdk/src/libraries/nacl_io/mount_node.cc

 /* Copyright (c) 2012 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "nacl_io/mount_node.h"
 
 #include <errno.h>
 #include <fcntl.h>
 #include <string.h>
 #include <sys/stat.h>
@@ skipping 41 matching lines @@
 
 Error MountNode::GetDents(size_t offs,
                           struct dirent* pdir,
                           size_t count,
                           int* out_bytes) {
   *out_bytes = 0;
   return ENOTDIR;
 }
 
 Error MountNode::GetStat(struct stat* pstat) {
-  AutoLock lock(&lock_);
+  AUTO_LOCK(node_lock_);
   memcpy(pstat, &stat_, sizeof(stat_));
   return 0;
 }
 
 Error MountNode::Ioctl(int request, char* arg) { return EINVAL; }
 
 Error MountNode::Read(size_t offs, void* buf, size_t count, int* out_bytes) {
   *out_bytes = 0;
   return EINVAL;
 }
@@ skipping 69 matching lines @@
   out_node->reset(NULL);
   return ENOTDIR;
 }
 
 int MountNode::ChildCount() { return 0; }
 
 void MountNode::Link() { stat_.st_nlink++; }
 
 void MountNode::Unlink() { stat_.st_nlink--; }