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md: Make calc_dev_sboffset() return a sector count.

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As BLOCK_SIZE_BITS is 10 and

	MD_NEW_SIZE_SECTORS(2 * x) = 2 * NEW_SIZE_BLOCKS(x),

the return value of calc_dev_sboffset() doubles. Fix up all three
callers accordingly.

Signed-off-by: Andre Noll <maan@systemlinux.org>
Signed-off-by: Neil Brown <neilb@suse.de>
This commit is contained in:
Andre Noll 2008-07-11 22:02:23 +10:00 committed by Neil Brown
parent e7debaa495
commit b73df2d3d6
1 changed files with 7 additions and 6 deletions
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13
drivers/md/md.c
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@ -347,10 +347,11 @@ static struct mdk_personality *find_pers(int level, char *clevel)
return NULL;
}
/* return the offset of the super block in 512byte sectors */
static inline sector_t calc_dev_sboffset(struct block_device *bdev)
{
sector_t size = bdev->bd_inode->i_size >> BLOCK_SIZE_BITS;
return MD_NEW_SIZE_BLOCKS(size);
sector_t num_sectors = bdev->bd_inode->i_size / 512;
return MD_NEW_SIZE_SECTORS(num_sectors);
}
static sector_t calc_num_sectors(mdk_rdev_t *rdev, unsigned chunk_size)
@ -673,7 +674,7 @@ static int super_90_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version
*
* It also happens to be a multiple of 4Kb.
*/
sb_offset = calc_dev_sboffset(rdev->bdev);
sb_offset = calc_dev_sboffset(rdev->bdev) / 2;
rdev->sb_offset = sb_offset;
ret = read_disk_sb(rdev, MD_SB_BYTES);
@ -1006,7 +1007,7 @@ super_90_rdev_size_change(mdk_rdev_t *rdev, unsigned long long size)
size *= 2; /* convert to sectors */
if (rdev->mddev->bitmap_offset)
return 0; /* can't move bitmap */
rdev->sb_offset = calc_dev_sboffset(rdev->bdev);
rdev->sb_offset = calc_dev_sboffset(rdev->bdev) / 2;
if (!size || size > rdev->sb_offset*2)
size = rdev->sb_offset*2;
md_super_write(rdev->mddev, rdev, rdev->sb_offset << 1, rdev->sb_size,
@ -4356,7 +4357,7 @@ static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info)
printk(KERN_INFO "md: nonpersistent superblock ...\n");
rdev->sb_offset = rdev->bdev->bd_inode->i_size >> BLOCK_SIZE_BITS;
} else
rdev->sb_offset = calc_dev_sboffset(rdev->bdev);
rdev->sb_offset = calc_dev_sboffset(rdev->bdev) / 2;
rdev->size = calc_num_sectors(rdev, mddev->chunk_size) / 2;
err = bind_rdev_to_array(rdev, mddev);
@ -4423,7 +4424,7 @@ static int hot_add_disk(mddev_t * mddev, dev_t dev)
}
if (mddev->persistent)
rdev->sb_offset = calc_dev_sboffset(rdev->bdev);
rdev->sb_offset = calc_dev_sboffset(rdev->bdev) / 2;
else
rdev->sb_offset =
rdev->bdev->bd_inode->i_size >> BLOCK_SIZE_BITS;