release/src-rt-6.x/linux/linux-2.6/drivers/md/dm-mpath.h

   1 /*
   2  * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
   3  *
   4  * This file is released under the GPL.
   5  *
   6  * Multipath.
   7  */
   8
   9 #ifndef DM_MPATH_H
  10 #define DM_MPATH_H
  11
  12 struct dm_dev;
  13
  14 struct dm_path {
  15         struct dm_dev *dev;     /* Read-only */
  16         unsigned is_active;     /* Read-only */
  17
  18         void *pscontext;        /* For path-selector use */
  19         void *hwhcontext;       /* For hw-handler use */
  20 };
  21
  22 /* Callback for hwh_pg_init_fn to use when complete */
  23 void dm_pg_init_complete(struct dm_path *path, unsigned err_flags);
  24
  25 #endif