Btrfs: Remove the invalid shrink size check up from btrfs_shrink_dev()

Remove an invalid size check up from btrfs_shrink_dev().

The new size should not larger than the device->total_bytes as it was
already verified before coming to here(i.e. new_size < old_size).

Remove invalid check up for btrfs_shrink_dev().

Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 8fcf9a59c28d..14c0d2e0790c 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -1409,7 +1409,7 @@ static noinline int btrfs_ioctl_resize(struct btrfs_root *root,
                 btrfs_commit_transaction(trans, root);
         } else if (new_size < old_size) {
                 ret = btrfs_shrink_device(device, new_size);
-        }
+        } /* equal, nothing need to do */
 
 out_free:
         kfree(vol_args);