1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/block/rd.c b/drivers/block/rd.c
index ffd6abd6d5a0..1c54f46d3f70 100644
--- a/drivers/block/rd.c
+++ b/drivers/block/rd.c
@@ -310,12 +310,12 @@ static int rd_ioctl(struct inode *inode, struct file *file,
          * cache
          */
         error = -EBUSY;
-        down(&bdev->bd_sem);
+        mutex_lock(&bdev->bd_mutex);
         if (bdev->bd_openers <= 2) {
                 truncate_inode_pages(bdev->bd_inode->i_mapping, 0);
                 error = 0;
         }
-        up(&bdev->bd_sem);
+        mutex_unlock(&bdev->bd_mutex);
         return error;
 }