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md: Make super_type->rdev_size_change() take sector-based sizes. 

Also, change the type of the size parameter from unsigned long long to
sector_t and rename it to num_sectors.

Signed-off-by: Andre Noll <maan@systemlinux.org>
Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
Andre Noll 2008-07-21 14:42:12 +10:00 committed by NeilBrown
parent d07bd3bcc4
commit 15f4a5fdf3
1 changed files with 19 additions and 21 deletions
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40
drivers/md/md.c
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@ -655,7 +655,7 @@ struct super_type {
int (*validate_super)(mddev_t *mddev, mdk_rdev_t *rdev);
void (*sync_super)(mddev_t *mddev, mdk_rdev_t *rdev);
unsigned long long (*rdev_size_change)(mdk_rdev_t *rdev,
unsigned long long size);
sector_t num_sectors);
};
/*
@ -998,20 +998,19 @@ static void super_90_sync(mddev_t *mddev, mdk_rdev_t *rdev)
* rdev_size_change for 0.90.0
*/
static unsigned long long
super_90_rdev_size_change(mdk_rdev_t *rdev, unsigned long long size)
super_90_rdev_size_change(mdk_rdev_t *rdev, sector_t num_sectors)
{
if (size && size < rdev->mddev->size)
if (num_sectors && num_sectors < rdev->mddev->size * 2)
return 0; /* component must fit device */
size *= 2; /* convert to sectors */
if (rdev->mddev->bitmap_offset)
return 0; /* can't move bitmap */
rdev->sb_start = calc_dev_sboffset(rdev->bdev);
if (!size || size > rdev->sb_start)
size = rdev->sb_start;
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,
rdev->sb_page);
md_super_wait(rdev->mddev);
return size/2; /* kB for sysfs */
return num_sectors / 2; /* kB for sysfs */
}
@ -1339,19 +1338,18 @@ static void super_1_sync(mddev_t *mddev, mdk_rdev_t *rdev)
}
static unsigned long long
super_1_rdev_size_change(mdk_rdev_t *rdev, unsigned long long size)
super_1_rdev_size_change(mdk_rdev_t *rdev, sector_t num_sectors)
{
struct mdp_superblock_1 *sb;
unsigned long long max_size;
if (size && size < rdev->mddev->size)
sector_t max_sectors;
if (num_sectors && num_sectors < rdev->mddev->size * 2)
return 0; /* component must fit device */
size *= 2; /* convert to sectors */
if (rdev->sb_start < rdev->data_offset) {
/* minor versions 1 and 2; superblock before data */
max_size = (rdev->bdev->bd_inode->i_size >> 9);
max_size -= rdev->data_offset;
if (!size || size > max_size)
size = max_size;
max_sectors = rdev->bdev->bd_inode->i_size >> 9;
max_sectors -= rdev->data_offset;
if (!num_sectors || num_sectors > max_sectors)
num_sectors = max_sectors;
} else if (rdev->mddev->bitmap_offset) {
/* minor version 0 with bitmap we can't move */
return 0;
@ -1360,19 +1358,19 @@ super_1_rdev_size_change(mdk_rdev_t *rdev, unsigned long long size)
sector_t sb_start;
sb_start = (rdev->bdev->bd_inode->i_size >> 9) - 8*2;
sb_start &= ~(sector_t)(4*2 - 1);
max_size = rdev->size*2 + sb_start - rdev->sb_start;
if (!size || size > max_size)
size = max_size;
max_sectors = rdev->size * 2 + sb_start - rdev->sb_start;
if (!num_sectors || num_sectors > max_sectors)
num_sectors = max_sectors;
rdev->sb_start = sb_start;
}
sb = (struct mdp_superblock_1 *) page_address(rdev->sb_page);
sb->data_size = cpu_to_le64(size);
sb->data_size = cpu_to_le64(num_sectors);
sb->super_offset = rdev->sb_start;
sb->sb_csum = calc_sb_1_csum(sb);
md_super_write(rdev->mddev, rdev, rdev->sb_start, rdev->sb_size,
rdev->sb_page);
md_super_wait(rdev->mddev);
return size/2; /* kB for sysfs */
return num_sectors / 2; /* kB for sysfs */
}
static struct super_type super_types[] = {
@ -2112,7 +2110,7 @@ rdev_size_store(mdk_rdev_t *rdev, const char *buf, size_t len)
if (my_mddev->pers && rdev->raid_disk >= 0) {
if (my_mddev->persistent) {
size = super_types[my_mddev->major_version].
rdev_size_change(rdev, size);
rdev_size_change(rdev, size * 2);
if (!size)
return -EBUSY;
} else if (!size) {