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1da177e4 LT |
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 |