lock.h 2.7 KB

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  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. #ifndef __LOCK_DOT_H__
  13. #define __LOCK_DOT_H__
  14. void dlm_dump_rsb(struct dlm_rsb *r);
  15. void dlm_print_lkb(struct dlm_lkb *lkb);
  16. void dlm_receive_message_saved(struct dlm_ls *ls, struct dlm_message *ms);
  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_search_rsb_tree(struct rb_root *tree, char *name, int len,
  29. unsigned int flags, struct dlm_rsb **r_ret);
  30. int dlm_purge_locks(struct dlm_ls *ls);
  31. void dlm_purge_mstcpy_locks(struct dlm_rsb *r);
  32. void dlm_grant_after_purge(struct dlm_ls *ls);
  33. int dlm_recover_waiters_post(struct dlm_ls *ls);
  34. void dlm_recover_waiters_pre(struct dlm_ls *ls);
  35. int dlm_recover_master_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
  36. int dlm_recover_process_copy(struct dlm_ls *ls, struct dlm_rcom *rc);
  37. int dlm_user_request(struct dlm_ls *ls, struct dlm_user_args *ua, int mode,
  38. uint32_t flags, void *name, unsigned int namelen,
  39. unsigned long timeout_cs);
  40. int dlm_user_convert(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  41. int mode, uint32_t flags, uint32_t lkid, char *lvb_in,
  42. unsigned long timeout_cs);
  43. int dlm_user_unlock(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  44. uint32_t flags, uint32_t lkid, char *lvb_in);
  45. int dlm_user_cancel(struct dlm_ls *ls, struct dlm_user_args *ua_tmp,
  46. uint32_t flags, uint32_t lkid);
  47. int dlm_user_purge(struct dlm_ls *ls, struct dlm_user_proc *proc,
  48. int nodeid, int pid);
  49. int dlm_user_deadlock(struct dlm_ls *ls, uint32_t flags, uint32_t lkid);
  50. void dlm_clear_proc_locks(struct dlm_ls *ls, struct dlm_user_proc *proc);
  51. static inline int is_master(struct dlm_rsb *r)
  52. {
  53. return !r->res_nodeid;
  54. }
  55. static inline void lock_rsb(struct dlm_rsb *r)
  56. {
  57. mutex_lock(&r->res_mutex);
  58. }
  59. static inline void unlock_rsb(struct dlm_rsb *r)
  60. {
  61. mutex_unlock(&r->res_mutex);
  62. }
  63. #endif