LXR linux/fs/dlm/lock.h

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/******************************************************************************
   3*******************************************************************************
   4**
   5**  Copyright (C) 2005-2007 Red Hat, Inc.  All rights reserved.
   6**
   7**
   8*******************************************************************************
   9******************************************************************************/
  10
  11#ifndef __LOCK_DOT_H__
  12#define __LOCK_DOT_H__
  13
  14void dlm_dump_rsb(struct dlm_rsb *r);
  15void dlm_dump_rsb_name(struct dlm_ls *ls, char *name, int len);
  16void dlm_print_lkb(struct dlm_lkb *lkb);
  17void dlm_receive_message_saved(struct dlm_ls *ls, struct dlm_message *ms,
  18                               uint32_t saved_seq);
  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);
  30int dlm_master_lookup(struct dlm_ls *ls, int nodeid, char *name, int len,
  31                      unsigned int flags, int *r_nodeid, int *result);
  32
  33int dlm_search_rsb_tree(struct rb_root *tree, char *name, int len,
  34                        struct dlm_rsb **r_ret);
  35
  36void dlm_recover_purge(struct dlm_ls *ls);
  37void dlm_purge_mstcpy_locks(struct dlm_rsb *r);
  38void dlm_recover_grant(struct dlm_ls *ls);
  39int dlm_recover_waiters_post(struct dlm_ls *ls);
  40void dlm_recover_waiters_pre(struct dlm_ls *ls);
  41int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
  42int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
  43
  44int dlm_user_request(struct dlm_ls *ls, struct dlm_user_args *ua, int mode,
  45        uint32_t flags, void *name, unsigned int namelen,
  46        unsigned long timeout_cs);
  47int dlm_user_convert(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  48        int mode, uint32_t flags, uint32_t lkid, char *lvb_in,
  49        unsigned long timeout_cs);
  50int dlm_user_adopt_orphan(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  51        int mode, uint32_t flags, void *name, unsigned int namelen,
  52        unsigned long timeout_cs, uint32_t *lkid);
  53int dlm_user_unlock(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  54        uint32_t flags, uint32_t lkid, char *lvb_in);
  55int dlm_user_cancel(struct dlm_ls *ls,  struct dlm_user_args *ua_tmp,
  56        uint32_t flags, uint32_t lkid);
  57int dlm_user_purge(struct dlm_ls *ls, struct dlm_user_proc *proc,
  58        int nodeid, int pid);
  59int dlm_user_deadlock(struct dlm_ls *ls, uint32_t flags, uint32_t lkid);
  60void dlm_clear_proc_locks(struct dlm_ls *ls, struct dlm_user_proc *proc);
  61
  62static inline int is_master(struct dlm_rsb *r)
  63{
  64        return !r->res_nodeid;
  65}
  66
  67static inline void lock_rsb(struct dlm_rsb *r)
  68{
  69        mutex_lock(&r->res_mutex);
  70}
  71
  72static inline void unlock_rsb(struct dlm_rsb *r)
  73{
  74        mutex_unlock(&r->res_mutex);
  75}
  76
  77#endif
  78
  79