diff options
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 48 |
1 files changed, 22 insertions, 26 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 7145cd150f7..d05e3125d29 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1024,7 +1024,7 @@ static int super_1_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version) rdev-> sb_size = (rdev->sb_size | bmask)+1; if (refdev == 0) - return 1; + ret = 1; else { __u64 ev1, ev2; struct mdp_superblock_1 *refsb = @@ -1044,7 +1044,9 @@ static int super_1_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version) ev2 = le64_to_cpu(refsb->events); if (ev1 > ev2) - return 1; + ret = 1; + else + ret = 0; } if (minor_version) rdev->size = ((rdev->bdev->bd_inode->i_size>>9) - le64_to_cpu(sb->data_offset)) / 2; @@ -1058,7 +1060,7 @@ static int super_1_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version) if (le32_to_cpu(sb->size) > rdev->size*2) return -EINVAL; - return 0; + return ret; } static int super_1_validate(mddev_t *mddev, mdk_rdev_t *rdev) @@ -1081,7 +1083,7 @@ static int super_1_validate(mddev_t *mddev, mdk_rdev_t *rdev) mddev->size = le64_to_cpu(sb->size)/2; mddev->events = le64_to_cpu(sb->events); mddev->bitmap_offset = 0; - mddev->default_bitmap_offset = 1024; + mddev->default_bitmap_offset = 1024 >> 9; mddev->recovery_cp = le64_to_cpu(sb->resync_offset); memcpy(mddev->uuid, sb->set_uuid, 16); @@ -1161,6 +1163,9 @@ static void super_1_sync(mddev_t *mddev, mdk_rdev_t *rdev) sb->cnt_corrected_read = atomic_read(&rdev->corrected_errors); + sb->raid_disks = cpu_to_le32(mddev->raid_disks); + sb->size = cpu_to_le64(mddev->size<<1); + if (mddev->bitmap && mddev->bitmap_file == NULL) { sb->bitmap_offset = cpu_to_le32((__u32)mddev->bitmap_offset); sb->feature_map = cpu_to_le32(MD_FEATURE_BITMAP_OFFSET); @@ -2686,14 +2691,6 @@ static int do_md_stop(mddev_t * mddev, int ro) set_disk_ro(disk, 1); } - bitmap_destroy(mddev); - if (mddev->bitmap_file) { - atomic_set(&mddev->bitmap_file->f_dentry->d_inode->i_writecount, 1); - fput(mddev->bitmap_file); - mddev->bitmap_file = NULL; - } - mddev->bitmap_offset = 0; - /* * Free resources if final stop */ @@ -2703,6 +2700,14 @@ static int do_md_stop(mddev_t * mddev, int ro) struct gendisk *disk; printk(KERN_INFO "md: %s stopped.\n", mdname(mddev)); + bitmap_destroy(mddev); + if (mddev->bitmap_file) { + atomic_set(&mddev->bitmap_file->f_dentry->d_inode->i_writecount, 1); + fput(mddev->bitmap_file); + mddev->bitmap_file = NULL; + } + mddev->bitmap_offset = 0; + ITERATE_RDEV(mddev,rdev,tmp) if (rdev->raid_disk >= 0) { char nm[20]; @@ -2939,6 +2944,8 @@ static int get_array_info(mddev_t * mddev, void __user * arg) info.ctime = mddev->ctime; info.level = mddev->level; info.size = mddev->size; + if (info.size != mddev->size) /* overflow */ + info.size = -1; info.nr_disks = nr; info.raid_disks = mddev->raid_disks; info.md_minor = mddev->md_minor; @@ -3465,7 +3472,7 @@ static int update_size(mddev_t *mddev, unsigned long size) bdev = bdget_disk(mddev->gendisk, 0); if (bdev) { mutex_lock(&bdev->bd_inode->i_mutex); - i_size_write(bdev->bd_inode, mddev->array_size << 10); + i_size_write(bdev->bd_inode, (loff_t)mddev->array_size << 10); mutex_unlock(&bdev->bd_inode->i_mutex); bdput(bdev); } @@ -3485,17 +3492,6 @@ static int update_raid_disks(mddev_t *mddev, int raid_disks) if (mddev->sync_thread) return -EBUSY; rv = mddev->pers->reshape(mddev, raid_disks); - if (!rv) { - struct block_device *bdev; - - bdev = bdget_disk(mddev->gendisk, 0); - if (bdev) { - mutex_lock(&bdev->bd_inode->i_mutex); - i_size_write(bdev->bd_inode, mddev->array_size << 10); - mutex_unlock(&bdev->bd_inode->i_mutex); - bdput(bdev); - } - } return rv; } @@ -3531,7 +3527,7 @@ static int update_array_info(mddev_t *mddev, mdu_array_info_t *info) ) return -EINVAL; /* Check there is only one change */ - if (mddev->size != info->size) cnt++; + if (info->size >= 0 && mddev->size != info->size) cnt++; if (mddev->raid_disks != info->raid_disks) cnt++; if (mddev->layout != info->layout) cnt++; if ((state ^ info->state) & (1<<MD_SB_BITMAP_PRESENT)) cnt++; @@ -3548,7 +3544,7 @@ static int update_array_info(mddev_t *mddev, mdu_array_info_t *info) else return mddev->pers->reconfig(mddev, info->layout, -1); } - if (mddev->size != info->size) + if (info->size >= 0 && mddev->size != info->size) rv = update_size(mddev, info->size); if (mddev->raid_disks != info->raid_disks) |