diff options
| -rw-r--r-- | block/partitions/core.c | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/block/partitions/core.c b/block/partitions/core.c index 347c56a51d87..ed78cdfe054b 100644 --- a/block/partitions/core.c +++ b/block/partitions/core.c @@ -453,17 +453,26 @@ int bdev_add_partition(struct block_device *bdev, int partno, sector_t start, sector_t length) { struct block_device *part; + struct gendisk *disk = bdev->bd_disk; + int ret; - mutex_lock(&bdev->bd_disk->open_mutex); - if (partition_overlaps(bdev->bd_disk, start, length, -1)) { - mutex_unlock(&bdev->bd_disk->open_mutex); - return -EBUSY; + mutex_lock(&disk->open_mutex); + if (!(disk->flags & GENHD_FL_UP)) { + ret = -ENXIO; + goto out; } - part = add_partition(bdev->bd_disk, partno, start, length, + if (partition_overlaps(disk, start, length, -1)) { + ret = -EBUSY; + goto out; + } + + part = add_partition(disk, partno, start, length, ADDPART_FLAG_NONE, NULL); - mutex_unlock(&bdev->bd_disk->open_mutex); - return PTR_ERR_OR_ZERO(part); + ret = PTR_ERR_OR_ZERO(part); +out: + mutex_unlock(&disk->open_mutex); + return ret; } int bdev_del_partition(struct block_device *bdev, int partno) |