fs/ocfs2/cluster/ocfs2_nodemanager.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /* -*- mode: c; c-basic-offset: 8; -*-
   3  * vim: noexpandtab sw=8 ts=8 sts=0:
   4  *
   5  * ocfs2_nodemanager.h
   6  *
   7  * Header describing the interface between userspace and the kernel
   8  * for the ocfs2_nodemanager module.
   9  *
  10  * Copyright (C) 2002, 2004 Oracle.  All rights reserved.
  11  */
  12
  13 #ifndef _OCFS2_NODEMANAGER_H
  14 #define _OCFS2_NODEMANAGER_H
  15
  16 #define O2NM_API_VERSION        5
  17
  18 #define O2NM_MAX_NODES          255
  19 #define O2NM_INVALID_NODE_NUM   255
  20
  21 /* host name, group name, cluster name all 64 bytes */
  22 #define O2NM_MAX_NAME_LEN        64    // __NEW_UTS_LEN
  23
  24 /*
  25  * Maximum number of global heartbeat regions allowed.
  26  * **CAUTION**  Changing this number will break dlm compatibility.
  27  */
  28 #define O2NM_MAX_REGIONS        32
  29
  30 #endif /* _OCFS2_NODEMANAGER_H */