LXR linux/fs/dlm/lock.h

   1/******************************************************************************
   2*******************************************************************************
   3**
   4**  Copyright (C) 2005-2007 Red Hat, Inc.  All rights reserved.
   5**
   6**  This copyrighted material is made available to anyone wishing to use,
   7**  modify, copy, or redistribute it subject to the terms and conditions
   8**  of the GNU General Public License v.2.
   9**
  10*******************************************************************************
  11******************************************************************************/
  12
  13#ifndef __LOCK_DOT_H__
  14#define __LOCK_DOT_H__
  15
  16void dlm_dump_rsb(struct dlm_rsb *r);
  17void dlm_print_lkb(struct dlm_lkb *lkb);
  18void dlm_receive_message_saved(struct dlm_ls *ls, struct dlm_message *ms);
  19void dlm_receive_buffer(union dlm_packet *p, int nodeid);
  20int dlm_modes_compat(int mode1, int mode2);
  21void dlm_put_rsb(struct dlm_rsb *r);
  22void dlm_hold_rsb(struct dlm_rsb *r);
  23int dlm_put_lkb(struct dlm_lkb *lkb);
  24void dlm_scan_rsbs(struct dlm_ls *ls);
  25int dlm_lock_recovery_try(struct dlm_ls *ls);
  26void dlm_unlock_recovery(struct dlm_ls *ls);
  27void dlm_scan_timeout(struct dlm_ls *ls);
  28void dlm_adjust_timeouts(struct dlm_ls *ls);
  29
  30int dlm_purge_locks(struct dlm_ls *ls);
  31void dlm_purge_mstcpy_locks(struct dlm_rsb *r);
  32void dlm_grant_after_purge(struct dlm_ls *ls);
  33int dlm_recover_waiters_post(struct dlm_ls *ls);
  34void dlm_recover_waiters_pre(struct dlm_ls *ls);
  35int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
  36int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
  37
  38int dlm_user_request(struct dlm_ls *ls, struct dlm_user_args *ua, int mode,
  39        uint32_t flags, void *name, unsigned int namelen,
  40        unsigned long timeout_cs);
  41int dlm_user_convert(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  42        int mode, uint32_t flags, uint32_t lkid, char *lvb_in,
  43        unsigned long timeout_cs);
  44int dlm_user_unlock(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  45        uint32_t flags, uint32_t lkid, char *lvb_in);
  46int dlm_user_cancel(struct dlm_ls *ls,  struct dlm_user_args *ua_tmp,
  47        uint32_t flags, uint32_t lkid);
  48int dlm_user_purge(struct dlm_ls *ls, struct dlm_user_proc *proc,
  49        int nodeid, int pid);
  50int dlm_user_deadlock(struct dlm_ls *ls, uint32_t flags, uint32_t lkid);
  51void dlm_clear_proc_locks(struct dlm_ls *ls, struct dlm_user_proc *proc);
  52
  53static inline int is_master(struct dlm_rsb *r)
  54{
  55        return !r->res_nodeid;
  56}
  57
  58static inline void lock_rsb(struct dlm_rsb *r)
  59{
  60        mutex_lock(&r->res_mutex);
  61}
  62
  63static inline void unlock_rsb(struct dlm_rsb *r)
  64{
  65        mutex_unlock(&r->res_mutex);
  66}
  67
  68#endif
  69
  70