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  *  Copyright (c) 2002, 2003 Cluster File Systems, Inc.
   5  *   Author: Peter Braam <braam@clusterfs.com>
   6  *   Author: Phil Schwan <phil@clusterfs.com>
   7  *
   8  *   This file is part of Lustre, http://www.lustre.org.
   9  *
  10  *   Lustre is free software; you can redistribute it and/or
  11  *   modify it under the terms of version 2 of the GNU General Public
  12  *   License as published by the Free Software Foundation.
  13  *
  14  *   Lustre is distributed in the hope that it will be useful,
  15  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *   GNU General Public License for more details.
  18  *
  19  *   You should have received a copy of the GNU General Public License
  20  *   along with Lustre; if not, write to the Free Software
  21  *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22  */
  23
  24 /* ldlm_request.c */
  25 typedef enum {
  26         LDLM_ASYNC,
  27         LDLM_SYNC,
  28 } ldlm_sync_t;
  29
  30 int ldlm_cancel_lru(struct ldlm_namespace *ns, ldlm_sync_t sync);
  31
  32 /* ldlm_resource.c */
  33 void ldlm_resource_insert_lock_after(struct ldlm_lock *original,
  34                                      struct ldlm_lock *new);
  35 int ldlm_resource_putref_locked(struct ldlm_resource *res);
  36
  37 /* ldlm_lock.c */
  38 void ldlm_grant_lock(struct ldlm_lock *lock, struct list_head *work_list);
  39
  40 struct ldlm_lock *
  41 ldlm_lock_create(struct ldlm_namespace *ns,
  42                  struct lustre_handle *parent_lock_handle, struct ldlm_res_id,
  43                  __u32 type, ldlm_mode_t, ldlm_blocking_callback,
  44                  ldlm_completion_callback, ldlm_glimpse_callback, void *data,
  45                  __u32 lvb_len);
  46 ldlm_error_t ldlm_lock_enqueue(struct ldlm_namespace *, struct ldlm_lock **,
  47                                void *cookie, int *flags);
  48 void ldlm_lock_addref_internal_nolock(struct ldlm_lock *, __u32 mode);
  49 void ldlm_lock_addref_internal(struct ldlm_lock *, __u32 mode);
  50 void ldlm_lock_decref_internal(struct ldlm_lock *, __u32 mode);
  51 void ldlm_add_ast_work_item(struct ldlm_lock *lock, struct ldlm_lock *new,
  52                                 struct list_head *work_list);
  53 int ldlm_reprocess_queue(struct ldlm_resource *res, struct list_head *queue,
  54                          struct list_head *work_list);
  55 int ldlm_run_bl_ast_work(struct list_head *rpc_list);
  56 int ldlm_run_cp_ast_work(struct list_head *rpc_list);
  57
  58 /* ldlm_lockd.c */
  59 int ldlm_bl_to_thread(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld,
  60                       struct ldlm_lock *lock);
  61 void ldlm_handle_bl_callback(struct ldlm_namespace *ns,
  62                              struct ldlm_lock_desc *ld, struct ldlm_lock *lock);
  63
  64 /* ldlm_plain.c */
  65 int ldlm_process_plain_lock(struct ldlm_lock *lock, int *flags, int first_enq,
  66                             ldlm_error_t *err, struct list_head *work_list);
  67
  68 /* ldlm_extent.c */
  69 int ldlm_process_extent_lock(struct ldlm_lock *lock, int *flags, int first_enq,
  70                              ldlm_error_t *err, struct list_head *work_list);
  71
  72 /* ldlm_flock.c */
  73 int ldlm_process_flock_lock(struct ldlm_lock *req, int *flags, int first_enq,
  74                             ldlm_error_t *err, struct list_head *work_list);
  75
  76 /* ldlm_inodebits.c */
  77 int ldlm_process_inodebits_lock(struct ldlm_lock *lock, int *flags,
  78                                 int first_enq, ldlm_error_t *err,
  79                                 struct list_head *work);
  80
  81 /* l_lock.c */
  82 void l_check_no_ns_lock(struct ldlm_namespace *ns);
  83
  84 extern struct proc_dir_entry *ldlm_svc_proc_dir;
  85
  86 struct ldlm_state {
  87         struct ptlrpc_service *ldlm_cb_service;
  88         struct ptlrpc_service *ldlm_cancel_service;
  89         struct ptlrpc_client *ldlm_client;
  90         struct ptlrpc_connection *ldlm_server_conn;
  91         struct ldlm_bl_pool *ldlm_bl_pool;
  92 };
  93
  94 int ldlm_init(void);
  95 void ldlm_exit(void);
  96