lock.h 2.9 KB

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  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. #ifndef __LOCK_DOT_H__
  11. #define __LOCK_DOT_H__
  12. void dlm_dump_rsb(struct dlm_rsb *r);
  13. void dlm_dump_rsb_name(struct dlm_ls *ls, char *name, int len);
  14. void dlm_print_lkb(struct dlm_lkb *lkb);
  15. void dlm_receive_message_saved(struct dlm_ls *ls, struct dlm_message *ms,
  16. uint32_t saved_seq);
  17. void dlm_receive_buffer(union dlm_packet *p, int nodeid);
  18. int dlm_modes_compat(int mode1, int mode2);
  19. void dlm_put_rsb(struct dlm_rsb *r);
  20. void dlm_hold_rsb(struct dlm_rsb *r);
  21. int dlm_put_lkb(struct dlm_lkb *lkb);
  22. void dlm_scan_rsbs(struct dlm_ls *ls);
  23. int dlm_lock_recovery_try(struct dlm_ls *ls);
  24. void dlm_unlock_recovery(struct dlm_ls *ls);
  25. void dlm_scan_waiters(struct dlm_ls *ls);
  26. void dlm_scan_timeout(struct dlm_ls *ls);
  27. void dlm_adjust_timeouts(struct dlm_ls *ls);
  28. int dlm_master_lookup(struct dlm_ls *ls, int nodeid, char *name, int len,
  29. unsigned int flags, int *r_nodeid, int *result);
  30. int dlm_search_rsb_tree(struct rb_root *tree, char *name, int len,
  31. struct dlm_rsb **r_ret);
  32. void dlm_recover_purge(struct dlm_ls *ls);
  33. void dlm_purge_mstcpy_locks(struct dlm_rsb *r);
  34. void dlm_recover_grant(struct dlm_ls *ls);
  35. int dlm_recover_waiters_post(struct dlm_ls *ls);
  36. void dlm_recover_waiters_pre(struct dlm_ls *ls);
  37. int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
  38. int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
  39. int 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);
  42. int 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);
  45. int dlm_user_adopt_orphan(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  46. int mode, uint32_t flags, void *name, unsigned int namelen,
  47. unsigned long timeout_cs, uint32_t *lkid);
  48. int dlm_user_unlock(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  49. uint32_t flags, uint32_t lkid, char *lvb_in);
  50. int dlm_user_cancel(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  51. uint32_t flags, uint32_t lkid);
  52. int dlm_user_purge(struct dlm_ls *ls, struct dlm_user_proc *proc,
  53. int nodeid, int pid);
  54. int dlm_user_deadlock(struct dlm_ls *ls, uint32_t flags, uint32_t lkid);
  55. void dlm_clear_proc_locks(struct dlm_ls *ls, struct dlm_user_proc *proc);
  56. static inline int is_master(struct dlm_rsb *r)
  57. {
  58. return !r->res_nodeid;
  59. }
  60. static inline void lock_rsb(struct dlm_rsb *r)
  61. {
  62. mutex_lock(&r->res_mutex);
  63. }
  64. static inline void unlock_rsb(struct dlm_rsb *r)
  65. {
  66. mutex_unlock(&r->res_mutex);
  67. }
  68. #endif