fs/ocfs2/dlm/dlmdomain.h

   1 /* -*- mode: c; c-basic-offset: 8; -*-
   2  * vim: noexpandtab sw=8 ts=8 sts=0:
   3  *
   4  * dlmdomain.h
   5  *
   6  * Copyright (C) 2004 Oracle.  All rights reserved.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2 of the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public
  19  * License along with this program; if not, write to the
  20  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  21  * Boston, MA 021110-1307, USA.
  22  *
  23  */
  24
  25 #ifndef DLMDOMAIN_H
  26 #define DLMDOMAIN_H
  27
  28 extern spinlock_t dlm_domain_lock;
  29 extern struct list_head dlm_domains;
  30
  31 static inline int dlm_joined(struct dlm_ctxt *dlm)
  32 {
  33         int ret = 0;
  34
  35         spin_lock(&dlm_domain_lock);
  36         if (dlm->dlm_state == DLM_CTXT_JOINED)
  37                 ret = 1;
  38         spin_unlock(&dlm_domain_lock);
  39
  40         return ret;
  41 }
  42
  43 static inline int dlm_shutting_down(struct dlm_ctxt *dlm)
  44 {
  45         int ret = 0;
  46
  47         spin_lock(&dlm_domain_lock);
  48         if (dlm->dlm_state == DLM_CTXT_IN_SHUTDOWN)
  49                 ret = 1;
  50         spin_unlock(&dlm_domain_lock);
  51
  52         return ret;
  53 }
  54
  55 void dlm_fire_domain_eviction_callbacks(struct dlm_ctxt *dlm,
  56                                         int node_num);
  57
  58 #endif