src/vol/vg_cache_impl.h

   1 /*
   2  * Copyright 2009-2010, Sine Nomine Associates and others.
   3  * All Rights Reserved.
   4  *
   5  * This software has been released under the terms of the IBM Public
   6  * License.  For details, see the LICENSE file in the top-level source
   7  * directory or online at http://www.openafs.org/dl/license10.html
   8  */
   9
  10 /*
  11  * demand attach fs
  12  * volume group membership cache
  13  */
  14
  15 #ifndef _AFS_VOL_VG_CACHE_IMPL_H
  16 #define _AFS_VOL_VG_CACHE_IMPL_H 1
  17
  18 #define VVGC_SCAN_TBL_LEN 4096  /**< thread-local partition scan table size */
  19
  20 #include "vg_cache_impl_types.h"
  21
  22 extern VVGCache_hash_table_t VVGCache_hash_table;
  23 extern VVGCache_t VVGCache;
  24
  25 extern int _VVGC_flush_part(struct DiskPartition64 * part);
  26 extern int _VVGC_flush_part_r(struct DiskPartition64 * part);
  27 extern int _VVGC_scan_start(struct DiskPartition64 * dp);
  28 extern int _VVGC_state_change(struct DiskPartition64 * part,
  29                               VVGCache_part_state_t state);
  30 extern int _VVGC_entry_purge_r(struct DiskPartition64 * dp,
  31                                VolumeId parent, VolumeId child);
  32 extern int _VVGC_dlist_add_r(struct DiskPartition64 *dp,
  33                              VolumeId parent, VolumeId child);
  34 extern int _VVGC_dlist_del_r(struct DiskPartition64 *dp,
  35                              VolumeId parent, VolumeId child);
  36
  37 #define VVGC_HASH(volumeId) (volumeId&(VolumeHashTable.Mask))
  38
  39 #endif /* _AFS_VOL_VG_CACHE_H */