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kernel/linux-imx6_3.14.28/fs/dlm/lock.h 2.9 KB
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  /******************************************************************************
  *******************************************************************************
  **
  **  Copyright (C) 2005-2007 Red Hat, Inc.  All rights reserved.
  **
  **  This copyrighted material is made available to anyone wishing to use,
  **  modify, copy, or redistribute it subject to the terms and conditions
  **  of the GNU General Public License v.2.
  **
  *******************************************************************************
  ******************************************************************************/
  
  #ifndef __LOCK_DOT_H__
  #define __LOCK_DOT_H__
  
  void dlm_dump_rsb(struct dlm_rsb *r);
  void dlm_dump_rsb_name(struct dlm_ls *ls, char *name, int len);
  void dlm_print_lkb(struct dlm_lkb *lkb);
  void dlm_receive_message_saved(struct dlm_ls *ls, struct dlm_message *ms,
  			       uint32_t saved_seq);
  void dlm_receive_buffer(union dlm_packet *p, int nodeid);
  int dlm_modes_compat(int mode1, int mode2);
  void dlm_put_rsb(struct dlm_rsb *r);
  void dlm_hold_rsb(struct dlm_rsb *r);
  int dlm_put_lkb(struct dlm_lkb *lkb);
  void dlm_scan_rsbs(struct dlm_ls *ls);
  int dlm_lock_recovery_try(struct dlm_ls *ls);
  void dlm_unlock_recovery(struct dlm_ls *ls);
  void dlm_scan_waiters(struct dlm_ls *ls);
  void dlm_scan_timeout(struct dlm_ls *ls);
  void dlm_adjust_timeouts(struct dlm_ls *ls);
  int dlm_master_lookup(struct dlm_ls *ls, int nodeid, char *name, int len,
  		      unsigned int flags, int *r_nodeid, int *result);
  
  int dlm_search_rsb_tree(struct rb_root *tree, char *name, int len,
  			struct dlm_rsb **r_ret);
  
  void dlm_recover_purge(struct dlm_ls *ls);
  void dlm_purge_mstcpy_locks(struct dlm_rsb *r);
  void dlm_recover_grant(struct dlm_ls *ls);
  int dlm_recover_waiters_post(struct dlm_ls *ls);
  void dlm_recover_waiters_pre(struct dlm_ls *ls);
  int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
  int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
  
  int dlm_user_request(struct dlm_ls *ls, struct dlm_user_args *ua, int mode,
  	uint32_t flags, void *name, unsigned int namelen,
  	unsigned long timeout_cs);
  int dlm_user_convert(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  	int mode, uint32_t flags, uint32_t lkid, char *lvb_in,
  	unsigned long timeout_cs);
  int dlm_user_unlock(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  	uint32_t flags, uint32_t lkid, char *lvb_in);
  int dlm_user_cancel(struct dlm_ls *ls,  struct dlm_user_args *ua_tmp,
  	uint32_t flags, uint32_t lkid);
  int dlm_user_purge(struct dlm_ls *ls, struct dlm_user_proc *proc,
  	int nodeid, int pid);
  int dlm_user_deadlock(struct dlm_ls *ls, uint32_t flags, uint32_t lkid);
  void dlm_clear_proc_locks(struct dlm_ls *ls, struct dlm_user_proc *proc);
  
  static inline int is_master(struct dlm_rsb *r)
  {
  	return !r->res_nodeid;
  }
  
  static inline void lock_rsb(struct dlm_rsb *r)
  {
  	mutex_lock(&r->res_mutex);
  }
  
  static inline void unlock_rsb(struct dlm_rsb *r)
  {
  	mutex_unlock(&r->res_mutex);
  }
  
  #endif