UBUNTU: Ubuntu-2.6.38-12.51

[linux-flexiantxendom0-natty.git] / block / ioctl.c

diff --git a/block/ioctl.c b/block/ioctl.c
index a9a302e..1124cd2 100644 (file)
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -294,11 +294,14 @@ int blkdev_ioctl(struct block_device *bdev, fmode_t mode, unsigned cmd,
                        return -EINVAL;
                if (get_user(n, (int __user *) arg))
                        return -EFAULT;
-               if (!(mode & FMODE_EXCL) && bd_claim(bdev, &bdev) < 0)
-                       return -EBUSY;
+               if (!(mode & FMODE_EXCL)) {
+                       bdgrab(bdev);
+                       if (blkdev_get(bdev, mode | FMODE_EXCL, &bdev) < 0)
+                               return -EBUSY;
+               }
                ret = set_blocksize(bdev, n);
                if (!(mode & FMODE_EXCL))
-                       bd_release(bdev);
+                       blkdev_put(bdev, mode | FMODE_EXCL);
                return ret;
        case BLKPG:
                ret = blkpg_ioctl(bdev, (struct blkpg_ioctl_arg __user *) arg);