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. */
40 LDLM_CANCEL_AGED = 1 << 0, /* Cancel aged locks (non lru resize). */
41 LDLM_CANCEL_PASSED = 1 << 1, /* Cancel passed number of locks. */
42 LDLM_CANCEL_SHRINK = 1 << 2, /* Cancel locks from shrinker. */
43 LDLM_CANCEL_LRUR = 1 << 3 /* Cancel locks from lru resize. */
46 int ldlm_cancel_lru(struct ldlm_namespace *ns, int nr, ldlm_sync_t sync,
48 int ldlm_cancel_lru_local(struct ldlm_namespace *ns, struct list_head *cancels,
49 int count, int max, int cancel_flags, int flags);
52 int ldlm_resource_putref_locked(struct ldlm_resource *res);
53 void ldlm_resource_insert_lock_after(struct ldlm_lock *original,
54 struct ldlm_lock *new);
55 int ldlm_namespace_free_prior(struct ldlm_namespace *ns);
56 int ldlm_namespace_free_post(struct ldlm_namespace *ns, int force);
59 /* Number of blocking/completion callbacks that will be sent in
60 * parallel (see bug 11301). */
61 #define PARALLEL_AST_LIMIT 200
63 struct ldlm_cb_set_arg {
64 struct ptlrpc_request_set *set;
66 __u32 type; /* LDLM_BL_CALLBACK or LDLM_CP_CALLBACK */
69 void ldlm_grant_lock(struct ldlm_lock *lock, struct list_head *work_list);
71 ldlm_lock_create(struct ldlm_namespace *ns, const struct ldlm_res_id *,
72 ldlm_type_t type, ldlm_mode_t, ldlm_blocking_callback,
73 ldlm_completion_callback, ldlm_glimpse_callback, void *data,
75 ldlm_error_t ldlm_lock_enqueue(struct ldlm_namespace *, struct ldlm_lock **,
76 void *cookie, int *flags);
77 void ldlm_lock_addref_internal(struct ldlm_lock *, __u32 mode);
78 void ldlm_lock_decref_internal(struct ldlm_lock *, __u32 mode);
79 void ldlm_add_ast_work_item(struct ldlm_lock *lock, struct ldlm_lock *new,
80 struct list_head *work_list);
81 int ldlm_reprocess_queue(struct ldlm_resource *res, struct list_head *queue,
82 struct list_head *work_list);
83 int ldlm_run_bl_ast_work(struct list_head *rpc_list);
84 int ldlm_run_cp_ast_work(struct list_head *rpc_list);
85 int ldlm_lock_remove_from_lru(struct ldlm_lock *lock);
86 int ldlm_lock_remove_from_lru_nolock(struct ldlm_lock *lock);
87 void ldlm_lock_add_to_lru_nolock(struct ldlm_lock *lock);
88 void ldlm_lock_add_to_lru(struct ldlm_lock *lock);
89 void ldlm_lock_touch_in_lru(struct ldlm_lock *lock);
90 void ldlm_lock_destroy_nolock(struct ldlm_lock *lock);
93 int ldlm_bl_to_thread_lock(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld,
94 struct ldlm_lock *lock);
95 int ldlm_bl_to_thread_list(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld,
96 struct list_head *cancels, int count);
98 void ldlm_handle_bl_callback(struct ldlm_namespace *ns,
99 struct ldlm_lock_desc *ld, struct ldlm_lock *lock);
102 int ldlm_process_plain_lock(struct ldlm_lock *lock, int *flags, int first_enq,
103 ldlm_error_t *err, struct list_head *work_list);
106 int ldlm_process_extent_lock(struct ldlm_lock *lock, int *flags, int first_enq,
107 ldlm_error_t *err, struct list_head *work_list);
110 int ldlm_process_flock_lock(struct ldlm_lock *req, int *flags, int first_enq,
111 ldlm_error_t *err, struct list_head *work_list);
113 /* ldlm_inodebits.c */
114 int ldlm_process_inodebits_lock(struct ldlm_lock *lock, int *flags,
115 int first_enq, ldlm_error_t *err,
116 struct list_head *work_list);
119 void l_check_ns_lock(struct ldlm_namespace *ns);
120 void l_check_no_ns_lock(struct ldlm_namespace *ns);
122 extern cfs_proc_dir_entry_t *ldlm_svc_proc_dir;
123 extern cfs_proc_dir_entry_t *ldlm_type_proc_dir;
126 struct ptlrpc_service *ldlm_cb_service;
127 struct ptlrpc_service *ldlm_cancel_service;
128 struct ptlrpc_client *ldlm_client;
129 struct ptlrpc_connection *ldlm_server_conn;
130 struct ldlm_bl_pool *ldlm_bl_pool;
134 void ldlm_exit(void);