ccacc7d2cf
This patch renames the hash_spacing and preshift members of struct raid0_private_data to spacing and sector_shift respectively and changes the semantics as follows: We always have spacing = 2 * hash_spacing. In case sizeof(sector_t) > sizeof(u32) we also have sector_shift = preshift + 1 while sector_shift = preshift = 0 otherwise. Note that the values of nb_zone and zone are unaffected by these changes because in the sector_div() preceeding the assignement of these two variables both arguments double. Signed-off-by: Andre Noll <maan@systemlinux.org> Signed-off-by: NeilBrown <neilb@suse.de>
31 lines
801 B
C
31 lines
801 B
C
#ifndef _RAID0_H
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#define _RAID0_H
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#include <linux/raid/md.h>
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struct strip_zone
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{
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sector_t zone_start; /* Zone offset in md_dev (in sectors) */
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sector_t dev_start; /* Zone offset in real dev (in sectors) */
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sector_t sectors; /* Zone size in sectors */
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int nb_dev; /* # of devices attached to the zone */
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mdk_rdev_t **dev; /* Devices attached to the zone */
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};
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struct raid0_private_data
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{
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struct strip_zone **hash_table; /* Table of indexes into strip_zone */
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struct strip_zone *strip_zone;
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mdk_rdev_t **devlist; /* lists of rdevs, pointed to by strip_zone->dev */
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int nr_strip_zones;
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sector_t spacing;
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int sector_shift; /* shift this before divide by spacing */
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};
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typedef struct raid0_private_data raid0_conf_t;
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#define mddev_to_conf(mddev) ((raid0_conf_t *) mddev->private)
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#endif
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