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_waiters(struct dlm_ls *ls);
  28void dlm_scan_timeout(struct dlm_ls *ls);
  29void dlm_adjust_timeouts(struct dlm_ls *ls);
  30
  31int dlm_purge_locks(struct dlm_ls *ls);
  32void dlm_purge_mstcpy_locks(struct dlm_rsb *r);
  33void dlm_grant_after_purge(struct dlm_ls *ls);
  34int dlm_recover_waiters_post(struct dlm_ls *ls);
  35void dlm_recover_waiters_pre(struct dlm_ls *ls);
  36int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
  37int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
  38
  39int dlm_user_request(struct dlm_ls *ls, struct dlm_user_args *ua, int mode,
  40        uint32_t flags, void *name, unsigned int namelen,
  41        unsigned long timeout_cs);
  42int dlm_user_convert(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  43        int mode, uint32_t flags, uint32_t lkid, char *lvb_in,
  44        unsigned long timeout_cs);
  45int dlm_user_unlock(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  46        uint32_t flags, uint32_t lkid, char *lvb_in);
  47int dlm_user_cancel(struct dlm_ls *ls,  struct dlm_user_args *ua_tmp,
  48        uint32_t flags, uint32_t lkid);
  49int dlm_user_purge(struct dlm_ls *ls, struct dlm_user_proc *proc,
  50        int nodeid, int pid);
  51int dlm_user_deadlock(struct dlm_ls *ls, uint32_t flags, uint32_t lkid);
  52void dlm_clear_proc_locks(struct dlm_ls *ls, struct dlm_user_proc *proc);
  53
  54static inline int is_master(struct dlm_rsb *r)
  55{
  56        return !r->res_nodeid;
  57}
  58
  59static inline void lock_rsb(struct dlm_rsb *r)
  60{
  61        mutex_lock(&r->res_mutex);
  62}
  63
  64static inline void unlock_rsb(struct dlm_rsb *r)
  65{
  66        mutex_unlock(&r->res_mutex);
  67}
  68
  69#endif
  70
  71