diff options
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 40 |
1 files changed, 19 insertions, 21 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index a2813fa06b7..df13a17a962 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -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) { |