block: remove BKL from partition ioctls

The blkpg_ioctl and blkdev_reread_part access fields of
the bdev and gendisk structures, yet they always do so
under the protection of bdev->bd_mutex, which seems
sufficient.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
cked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

1 files changed, 0 insertions, 4 deletions

diff --git a/block/ioctl.c b/block/ioctl.c
index 60f477c91ee..09fd7f1ef23 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -296,14 +296,10 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
                         bd_release(bdev);
                 return ret;
         case BLKPG:
-                lock_kernel();
                 ret = blkpg_ioctl(bdev, (struct blkpg_ioctl_arg __user *) arg);
-                unlock_kernel();
                 break;
         case BLKRRPART:
-                lock_kernel();
                 ret = blkdev_reread_part(bdev);
-                unlock_kernel();
                 break;
         case BLKGETSIZE:
                 size = bdev->bd_inode->i_size;