lock.h 3.6 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. #ifdef CONFIG_DLM_DEPRECATED_API
  26. void dlm_scan_timeout(struct dlm_ls *ls);
  27. void dlm_adjust_timeouts(struct dlm_ls *ls);
  28. #else
  29. static inline void dlm_scan_timeout(struct dlm_ls *ls) { }
  30. static inline void dlm_adjust_timeouts(struct dlm_ls *ls) { }
  31. #endif
  32. int dlm_master_lookup(struct dlm_ls *ls, int nodeid, char *name, int len,
  33. unsigned int flags, int *r_nodeid, int *result);
  34. int dlm_search_rsb_tree(struct rb_root *tree, const void *name, int len,
  35. struct dlm_rsb **r_ret);
  36. void dlm_recover_purge(struct dlm_ls *ls);
  37. void dlm_purge_mstcpy_locks(struct dlm_rsb *r);
  38. void dlm_recover_grant(struct dlm_ls *ls);
  39. int dlm_recover_waiters_post(struct dlm_ls *ls);
  40. void dlm_recover_waiters_pre(struct dlm_ls *ls);
  41. int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
  42. int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
  43. #ifdef CONFIG_DLM_DEPRECATED_API
  44. int 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);
  47. int 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);
  50. #else
  51. int dlm_user_request(struct dlm_ls *ls, struct dlm_user_args *ua, int mode,
  52. uint32_t flags, void *name, unsigned int namelen);
  53. int dlm_user_convert(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  54. int mode, uint32_t flags, uint32_t lkid, char *lvb_in);
  55. #endif
  56. int dlm_user_adopt_orphan(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  57. int mode, uint32_t flags, void *name, unsigned int namelen,
  58. uint32_t *lkid);
  59. int dlm_user_unlock(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  60. uint32_t flags, uint32_t lkid, char *lvb_in);
  61. int dlm_user_cancel(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  62. uint32_t flags, uint32_t lkid);
  63. int dlm_user_purge(struct dlm_ls *ls, struct dlm_user_proc *proc,
  64. int nodeid, int pid);
  65. int dlm_user_deadlock(struct dlm_ls *ls, uint32_t flags, uint32_t lkid);
  66. void dlm_clear_proc_locks(struct dlm_ls *ls, struct dlm_user_proc *proc);
  67. int dlm_debug_add_lkb(struct dlm_ls *ls, uint32_t lkb_id, char *name, int len,
  68. int lkb_nodeid, unsigned int lkb_flags, int lkb_status);
  69. int dlm_debug_add_lkb_to_waiters(struct dlm_ls *ls, uint32_t lkb_id,
  70. int mstype, int to_nodeid);
  71. static inline int is_master(struct dlm_rsb *r)
  72. {
  73. return !r->res_nodeid;
  74. }
  75. static inline void lock_rsb(struct dlm_rsb *r)
  76. {
  77. mutex_lock(&r->res_mutex);
  78. }
  79. static inline void unlock_rsb(struct dlm_rsb *r)
  80. {
  81. mutex_unlock(&r->res_mutex);
  82. }
  83. #endif