include/linux/raid/raid0.h

   1 #ifndef _RAID0_H
   2 #define _RAID0_H
   3
   4 #include <linux/raid/md.h>
   5
   6 struct strip_zone
   7 {
   8         sector_t zone_offset;   /* Zone offset in md_dev */
   9         sector_t dev_offset;    /* Zone offset in real dev */
  10         sector_t size;          /* Zone size */
  11         int nb_dev;             /* # of devices attached to the zone */
  12         mdk_rdev_t **dev;       /* Devices attached to the zone */
  13 };
  14
  15 struct raid0_private_data
  16 {
  17         struct strip_zone **hash_table; /* Table of indexes into strip_zone */
  18         struct strip_zone *strip_zone;
  19         mdk_rdev_t **devlist; /* lists of rdevs, pointed to by strip_zone->dev */
  20         int nr_strip_zones;
  21
  22         sector_t hash_spacing;
  23         int preshift;                   /* shift this before divide by hash_spacing */
  24 };
  25
  26 typedef struct raid0_private_data raid0_conf_t;
  27
  28 #define mddev_to_conf(mddev) ((raid0_conf_t *) mddev->private)
  29
  30 #endif