lustre/ldlm/ldlm_internal.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  */
   4
   5 /* ldlm_request.c */
   6 typedef enum {
   7         LDLM_ASYNC,
   8         LDLM_SYNC,
   9 } ldlm_sync_t;
  10
  11 /* Cancel lru flag, it indicates we cancel aged locks. */
  12 #define LDLM_CANCEL_AGED 0x00000001
  13
  14 int ldlm_cancel_lru(struct ldlm_namespace *ns, ldlm_sync_t sync);
  15 int ldlm_cancel_lru_local(struct ldlm_namespace *ns, struct list_head *cancels,
  16                           int count, int max, int flags);
  17
  18 /* ldlm_resource.c */
  19 int ldlm_resource_putref_locked(struct ldlm_resource *res);
  20 void ldlm_resource_insert_lock_after(struct ldlm_lock *original,
  21                                      struct ldlm_lock *new);
  22
  23 /* ldlm_lock.c */
  24 void ldlm_grant_lock(struct ldlm_lock *lock, struct list_head *work_list);
  25 struct ldlm_lock *
  26 ldlm_lock_create(struct ldlm_namespace *ns, const struct ldlm_res_id *,
  27                  ldlm_type_t type, ldlm_mode_t, ldlm_blocking_callback,
  28                  ldlm_completion_callback, ldlm_glimpse_callback, void *data,
  29                  __u32 lvb_len);
  30 ldlm_error_t ldlm_lock_enqueue(struct ldlm_namespace *, struct ldlm_lock **,
  31                                void *cookie, int *flags);
  32 void ldlm_lock_addref_internal(struct ldlm_lock *, __u32 mode);
  33 void ldlm_lock_decref_internal(struct ldlm_lock *, __u32 mode);
  34 void ldlm_add_ast_work_item(struct ldlm_lock *lock, struct ldlm_lock *new,
  35                                 struct list_head *work_list);
  36 int ldlm_reprocess_queue(struct ldlm_resource *res, struct list_head *queue,
  37                          struct list_head *work_list);
  38 int ldlm_run_bl_ast_work(struct list_head *rpc_list);
  39 int ldlm_run_cp_ast_work(struct list_head *rpc_list);
  40 int ldlm_lock_remove_from_lru_nolock(struct ldlm_lock *lock);
  41 void ldlm_lock_destroy_nolock(struct ldlm_lock *lock);
  42
  43 /* ldlm_lockd.c */
  44 int ldlm_bl_to_thread_lock(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld,
  45                            struct ldlm_lock *lock);
  46 int ldlm_bl_to_thread_list(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld,
  47                            struct list_head *cancels, int count);
  48
  49 void ldlm_handle_bl_callback(struct ldlm_namespace *ns,
  50                              struct ldlm_lock_desc *ld, struct ldlm_lock *lock);
  51
  52 /* ldlm_plain.c */
  53 int ldlm_process_plain_lock(struct ldlm_lock *lock, int *flags, int first_enq,
  54                             ldlm_error_t *err, struct list_head *work_list);
  55
  56 /* ldlm_extent.c */
  57 int ldlm_process_extent_lock(struct ldlm_lock *lock, int *flags, int first_enq,
  58                              ldlm_error_t *err, struct list_head *work_list);
  59
  60 /* ldlm_flock.c */
  61 int ldlm_process_flock_lock(struct ldlm_lock *req, int *flags, int first_enq,
  62                             ldlm_error_t *err, struct list_head *work_list);
  63
  64 /* ldlm_inodebits.c */
  65 int ldlm_process_inodebits_lock(struct ldlm_lock *lock, int *flags,
  66                                 int first_enq, ldlm_error_t *err,
  67                                 struct list_head *work_list);
  68
  69 /* l_lock.c */
  70 void l_check_ns_lock(struct ldlm_namespace *ns);
  71 void l_check_no_ns_lock(struct ldlm_namespace *ns);
  72
  73 extern cfs_proc_dir_entry_t *ldlm_svc_proc_dir;
  74
  75 struct ldlm_state {
  76         struct ptlrpc_service *ldlm_cb_service;
  77         struct ptlrpc_service *ldlm_cancel_service;
  78         struct ptlrpc_client *ldlm_client;
  79         struct ptlrpc_connection *ldlm_server_conn;
  80         struct ldlm_bl_pool *ldlm_bl_pool;
  81 };
  82
  83 int ldlm_init(void);
  84 void ldlm_exit(void);
  85