summaryrefslogtreecommitdiff
path: root/block/partitions
diff options
context:
space:
mode:
Diffstat (limited to 'block/partitions')
-rw-r--r--block/partitions/core.c29
1 files changed, 17 insertions, 12 deletions
diff --git a/block/partitions/core.c b/block/partitions/core.c
index 347c56a51d87..4230d4f71879 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;
+ }
+
+ if (partition_overlaps(disk, start, length, -1)) {
+ ret = -EBUSY;
+ goto out;
}
- part = add_partition(bdev->bd_disk, partno, start, length,
+ 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)
@@ -537,12 +546,8 @@ void blk_drop_partitions(struct gendisk *disk)
lockdep_assert_held(&disk->open_mutex);
- xa_for_each_start(&disk->part_tbl, idx, part, 1) {
- if (!bdgrab(part))
- continue;
+ xa_for_each_start(&disk->part_tbl, idx, part, 1)
delete_partition(part);
- bdput(part);
- }
}
static bool blk_add_partition(struct gendisk *disk,