1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
5 #define MAX_STRING_SIZE 128
7 extern atomic_t ldlm_srv_namespace_nr;
8 extern atomic_t ldlm_cli_namespace_nr;
9 extern struct semaphore ldlm_srv_namespace_lock;
10 extern struct list_head ldlm_srv_namespace_list;
11 extern struct semaphore ldlm_cli_namespace_lock;
12 extern struct list_head ldlm_cli_namespace_list;
14 static inline atomic_t *ldlm_namespace_nr(ldlm_side_t client)
16 return client == LDLM_NAMESPACE_SERVER ?
17 &ldlm_srv_namespace_nr : &ldlm_cli_namespace_nr;
20 static inline struct list_head *ldlm_namespace_list(ldlm_side_t client)
22 return client == LDLM_NAMESPACE_SERVER ?
23 &ldlm_srv_namespace_list : &ldlm_cli_namespace_list;
26 static inline struct semaphore *ldlm_namespace_lock(ldlm_side_t client)
28 return client == LDLM_NAMESPACE_SERVER ?
29 &ldlm_srv_namespace_lock : &ldlm_cli_namespace_lock;
38 /* Cancel lru flag, it indicates we cancel aged locks. */
39 #define LDLM_CANCEL_AGED 0x00000001
41 int ldlm_cancel_lru(struct ldlm_namespace *ns, int nr, ldlm_sync_t sync);
42 int ldlm_cancel_lru_local(struct ldlm_namespace *ns, struct list_head *cancels,
43 int count, int max, int flags);
46 int ldlm_resource_putref_locked(struct ldlm_resource *res);
47 void ldlm_resource_insert_lock_after(struct ldlm_lock *original,
48 struct ldlm_lock *new);
52 /* Number of blocking/completion callbacks that will be sent in
53 * parallel (see bug 11301). */
54 #define PARALLEL_AST_LIMIT 200
56 struct ldlm_cb_set_arg {
57 struct ptlrpc_request_set *set;
59 __u32 type; /* LDLM_BL_CALLBACK or LDLM_CP_CALLBACK */
62 void ldlm_grant_lock(struct ldlm_lock *lock, struct list_head *work_list);
64 ldlm_lock_create(struct ldlm_namespace *ns, const struct ldlm_res_id *,
65 ldlm_type_t type, ldlm_mode_t, ldlm_blocking_callback,
66 ldlm_completion_callback, ldlm_glimpse_callback, void *data,
68 ldlm_error_t ldlm_lock_enqueue(struct ldlm_namespace *, struct ldlm_lock **,
69 void *cookie, int *flags);
70 void ldlm_lock_addref_internal(struct ldlm_lock *, __u32 mode);
71 void ldlm_lock_decref_internal(struct ldlm_lock *, __u32 mode);
72 void ldlm_add_ast_work_item(struct ldlm_lock *lock, struct ldlm_lock *new,
73 struct list_head *work_list);
74 int ldlm_reprocess_queue(struct ldlm_resource *res, struct list_head *queue,
75 struct list_head *work_list);
76 int ldlm_run_bl_ast_work(struct list_head *rpc_list);
77 int ldlm_run_cp_ast_work(struct list_head *rpc_list);
78 int ldlm_lock_remove_from_lru(struct ldlm_lock *lock);
79 int ldlm_lock_remove_from_lru_nolock(struct ldlm_lock *lock);
80 void ldlm_lock_add_to_lru_nolock(struct ldlm_lock *lock);
81 void ldlm_lock_add_to_lru(struct ldlm_lock *lock);
82 void ldlm_lock_touch_in_lru(struct ldlm_lock *lock);
83 void ldlm_lock_destroy_nolock(struct ldlm_lock *lock);
86 int ldlm_bl_to_thread_lock(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld,
87 struct ldlm_lock *lock);
88 int ldlm_bl_to_thread_list(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld,
89 struct list_head *cancels, int count);
91 void ldlm_handle_bl_callback(struct ldlm_namespace *ns,
92 struct ldlm_lock_desc *ld, struct ldlm_lock *lock);
95 int ldlm_process_plain_lock(struct ldlm_lock *lock, int *flags, int first_enq,
96 ldlm_error_t *err, struct list_head *work_list);
99 int ldlm_process_extent_lock(struct ldlm_lock *lock, int *flags, int first_enq,
100 ldlm_error_t *err, struct list_head *work_list);
103 int ldlm_process_flock_lock(struct ldlm_lock *req, int *flags, int first_enq,
104 ldlm_error_t *err, struct list_head *work_list);
106 /* ldlm_inodebits.c */
107 int ldlm_process_inodebits_lock(struct ldlm_lock *lock, int *flags,
108 int first_enq, ldlm_error_t *err,
109 struct list_head *work_list);
112 void l_check_ns_lock(struct ldlm_namespace *ns);
113 void l_check_no_ns_lock(struct ldlm_namespace *ns);
115 extern cfs_proc_dir_entry_t *ldlm_svc_proc_dir;
116 extern cfs_proc_dir_entry_t *ldlm_type_proc_dir;
119 struct ptlrpc_service *ldlm_cb_service;
120 struct ptlrpc_service *ldlm_cancel_service;
121 struct ptlrpc_client *ldlm_client;
122 struct ptlrpc_connection *ldlm_server_conn;
123 struct ldlm_bl_pool *ldlm_bl_pool;
127 void ldlm_exit(void);