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md-new-param-to-calc_dev_sboffset 

When we allow for separate devices for data and metadata
in a later patch, we will need to be able to calculate
the superblock offset based on more than the bdev.

Signed-off-by: Jonathan Brassow <jbrassow@redhat.com>
This commit is contained in:
Jonathan Brassow 2011-01-14 09:14:33 +11:00 committed by NeilBrown
parent 7ebc0be7ff
commit 57b2caa394
1 changed files with 6 additions and 6 deletions
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12
drivers/md/md.c
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@ -705,9 +705,9 @@ static struct mdk_personality *find_pers(int level, char *clevel)
}
/* return the offset of the super block in 512byte sectors */
static inline sector_t calc_dev_sboffset(struct block_device *bdev)
static inline sector_t calc_dev_sboffset(mdk_rdev_t *rdev)
{
sector_t num_sectors = i_size_read(bdev->bd_inode) / 512;
sector_t num_sectors = i_size_read(rdev->bdev->bd_inode) / 512;
return MD_NEW_SIZE_SECTORS(num_sectors);
}
@ -991,7 +991,7 @@ 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.
*/
rdev->sb_start = calc_dev_sboffset(rdev->bdev);
rdev->sb_start = calc_dev_sboffset(rdev);
ret = read_disk_sb(rdev, MD_SB_BYTES);
if (ret) return ret;
@ -1332,7 +1332,7 @@ super_90_rdev_size_change(mdk_rdev_t *rdev, sector_t num_sectors)
return 0; /* component must fit device */
if (rdev->mddev->bitmap_info.offset)
return 0; /* can't move bitmap */
rdev->sb_start = calc_dev_sboffset(rdev->bdev);
rdev->sb_start = calc_dev_sboffset(rdev);
if (!num_sectors || num_sectors > rdev->sb_start)
num_sectors = rdev->sb_start;
md_super_write(rdev->mddev, rdev, rdev->sb_start, rdev->sb_size,
@ -5249,7 +5249,7 @@ static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info)
printk(KERN_INFO "md: nonpersistent superblock ...\n");
rdev->sb_start = i_size_read(rdev->bdev->bd_inode) / 512;
} else
rdev->sb_start = calc_dev_sboffset(rdev->bdev);
rdev->sb_start = calc_dev_sboffset(rdev);
rdev->sectors = rdev->sb_start;
err = bind_rdev_to_array(rdev, mddev);
@ -5316,7 +5316,7 @@ static int hot_add_disk(mddev_t * mddev, dev_t dev)
}
if (mddev->persistent)
rdev->sb_start = calc_dev_sboffset(rdev->bdev);
rdev->sb_start = calc_dev_sboffset(rdev);
else
rdev->sb_start = i_size_read(rdev->bdev->bd_inode) / 512;