diff options
| -rw-r--r-- | block/blk.h | 2 | ||||
| -rw-r--r-- | block/genhd.c | 2 | ||||
| -rw-r--r-- | block/partitions/core.c | 22 |
3 files changed, 10 insertions, 16 deletions
diff --git a/block/blk.h b/block/blk.h index 305e0ac22bf7..0cbf64108922 100644 --- a/block/blk.h +++ b/block/blk.h @@ -390,7 +390,7 @@ char *disk_name(struct gendisk *hd, int partno, char *buf); #define ADDPART_FLAG_RAID 1 #define ADDPART_FLAG_WHOLEDISK 2 void __delete_partition(struct percpu_ref *ref); -void delete_partition(struct gendisk *disk, int partno); +void delete_partition(struct gendisk *disk, struct hd_struct *part); int bdev_add_partition(struct block_device *bdev, int partno, sector_t start, sector_t length); int bdev_del_partition(struct block_device *bdev, int partno); diff --git a/block/genhd.c b/block/genhd.c index 06b642b23a07..1cc50ad5b191 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -897,7 +897,7 @@ void del_gendisk(struct gendisk *disk) while ((part = disk_part_iter_next(&piter))) { invalidate_partition(disk, part->partno); bdev_unhash_inode(part_devt(part)); - delete_partition(disk, part->partno); + delete_partition(disk, part); } disk_part_iter_exit(&piter); diff --git a/block/partitions/core.c b/block/partitions/core.c index 7e2f40875166..6dc534b502a9 100644 --- a/block/partitions/core.c +++ b/block/partitions/core.c @@ -296,20 +296,12 @@ void __delete_partition(struct percpu_ref *ref) * Must be called either with bd_mutex held, before a disk can be opened or * after all disk users are gone. */ -void delete_partition(struct gendisk *disk, int partno) +void delete_partition(struct gendisk *disk, struct hd_struct *part) { struct disk_part_tbl *ptbl = rcu_dereference_protected(disk->part_tbl, 1); - struct hd_struct *part; - - if (partno >= ptbl->len) - return; - part = rcu_dereference_protected(ptbl->part[partno], 1); - if (!part) - return; - - rcu_assign_pointer(ptbl->part[partno], NULL); + rcu_assign_pointer(ptbl->part[part->partno], NULL); rcu_assign_pointer(ptbl->last_lookup, NULL); kobject_put(part->holder_dir); device_del(part_to_dev(part)); @@ -520,10 +512,10 @@ int bdev_del_partition(struct block_device *bdev, int partno) if (!part) return -ENXIO; + ret = -ENOMEM; bdevp = bdget(part_devt(part)); - disk_put_part(part); if (!bdevp) - return -ENOMEM; + goto out_put_part; mutex_lock(&bdevp->bd_mutex); @@ -535,13 +527,15 @@ int bdev_del_partition(struct block_device *bdev, int partno) invalidate_bdev(bdevp); mutex_lock_nested(&bdev->bd_mutex, 1); - delete_partition(bdev->bd_disk, partno); + delete_partition(bdev->bd_disk, part); mutex_unlock(&bdev->bd_mutex); ret = 0; out_unlock: mutex_unlock(&bdevp->bd_mutex); bdput(bdevp); +out_put_part: + disk_put_part(part); return ret; } @@ -617,7 +611,7 @@ int blk_drop_partitions(struct gendisk *disk, struct block_device *bdev) disk_part_iter_init(&piter, disk, DISK_PITER_INCL_EMPTY); while ((part = disk_part_iter_next(&piter))) - delete_partition(disk, part->partno); + delete_partition(disk, part); disk_part_iter_exit(&piter); return 0; |