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
  22 struct obd_import {
  23         import_recover_t          imp_recover;
  24         struct ptlrpc_connection *imp_connection;
  25         struct ptlrpc_client     *imp_client;
  26         struct lustre_handle      imp_handle;
  27         struct list_head          imp_chain;
  28
  29         /* Lists of requests that are retained for replay, waiting for a reply,
  30          * or waiting for recovery to complete, respectively.
  31          */
  32         struct list_head          imp_replay_list;
  33         struct list_head          imp_sending_list;
  34         struct list_head          imp_delayed_list;
  35
  36         struct obd_device        *imp_obd;
  37         int                       imp_flags;
  38         int                       imp_level;
  39         __u64                     imp_last_xid;
  40         __u64                     imp_last_bulk_xid;
  41         __u64                     imp_max_transno;
  42         __u64                     imp_peer_committed_transno;
  43
  44         /* Protects flags, level, last_xid, *_list */
  45         spinlock_t                imp_lock;
  46 };
  47
  48 extern struct obd_import *class_conn2cliimp(struct lustre_handle *);
  49 extern struct obd_import *class_conn2ldlmimp(struct lustre_handle *);
  50
  51 #endif /* __KERNEL__ */
  52
  53 #endif /* __IMPORT_H */