Btrfs: check if the to-be-added device is writable

[pandora-kernel.git] / fs / btrfs / volumes.c

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index c37433d..0a8c8f8 100644 (file)
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1611,7 +1611,7 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
        if ((sb->s_flags & MS_RDONLY) && !root->fs_info->fs_devices->seeding)
                return -EINVAL;
 
-       bdev = blkdev_get_by_path(device_path, FMODE_EXCL,
+       bdev = blkdev_get_by_path(device_path, FMODE_WRITE | FMODE_EXCL,
                                  root->fs_info->bdev_holder);
        if (IS_ERR(bdev))
                return PTR_ERR(bdev);