lustre/include/linux/lustre_import.h

   1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
   2  * vim:expandtab:shiftwidth=8:tabstop=8:
   3  *
   4  * Copyright (C) 2001  Cluster File Systems, Inc.
   5  *
   6  * This code is issued under the GNU General Public License.
   7  * See the file COPYING in this distribution
   8  */
   9
  10 #ifndef __IMPORT_H
  11 #define __IMPORT_H
  12
  13 #ifdef __KERNEL__
  14
  15 #define IMP_INVALID       1
  16 #define IMP_REPLAYABLE    2
  17
  18 typedef int (*import_recover_t)(struct obd_import *imp, int phase);
  19
  20 #include <linux/lustre_idl.h>
  21 struct obd_import {
  22         import_recover_t          imp_recover;
  23         struct ptlrpc_connection *imp_connection;
  24         struct ptlrpc_client     *imp_client;
  25         struct lustre_handle      imp_handle;
  26         struct list_head          imp_chain;
  27
  28         /* Lists of requests that are retained for replay, waiting for a reply,
  29          * or waiting for recovery to complete, respectively.
  30          */
  31         struct list_head          imp_replay_list;
  32         struct list_head          imp_sending_list;
  33         struct list_head          imp_delayed_list;
  34
  35         struct obd_device        *imp_obd;
  36         int                       imp_flags;
  37         int                       imp_level;
  38         __u64                     imp_last_xid;
  39         __u64                     imp_max_transno;
  40         __u64                     imp_peer_last_xid;
  41         __u64                     imp_peer_committed_transno;
  42
  43         /* Protects flags, level, *_xid, *_list */
  44         spinlock_t                imp_lock;
  45 };
  46
  47 extern struct obd_import *class_conn2cliimp(struct lustre_handle *);
  48 extern struct obd_import *class_conn2ldlmimp(struct lustre_handle *);
  49
  50 #endif /* __KERNEL__ */
  51
  52 #endif /* __IMPORT_H */