diff options
| -rw-r--r-- | block/ioctl.c | 2 | ||||
| -rw-r--r-- | fs/block_dev.c | 7 |
2 files changed, 8 insertions, 1 deletions
diff --git a/block/ioctl.c b/block/ioctl.c index e3f5eb9882c..e06dbe9bc85 100644 --- a/block/ioctl.c +++ b/block/ioctl.c @@ -82,7 +82,7 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user fsync_bdev(bdevp); invalidate_bdev(bdevp, 0); - mutex_lock(&bdev->bd_mutex); + mutex_lock_nested(&bdev->bd_mutex, 1); delete_partition(disk, part); mutex_unlock(&bdev->bd_mutex); mutex_unlock(&bdevp->bd_mutex); diff --git a/fs/block_dev.c b/fs/block_dev.c index 0c59b703e9d..575076c018f 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -1101,6 +1101,13 @@ static int __blkdev_get(struct block_device *bdev, mode_t mode, unsigned flags, int for_part); static int __blkdev_put(struct block_device *bdev, int for_part); +/* + * bd_mutex locking: + * + * mutex_lock(part->bd_mutex) + * mutex_lock_nested(whole->bd_mutex, 1) + */ + static int do_open(struct block_device *bdev, struct file *file, int for_part) { struct module *owner = NULL; |