btrfs: switch btrfs_ioctl_balance() to mnt_want_write_file()
authorAl Viro <viro@zeniv.linux.org.uk>
Thu, 19 Jul 2012 07:17:49 +0000 (11:17 +0400)
committerAl Viro <viro@zeniv.linux.org.uk>
Sun, 22 Jul 2012 20:01:43 +0000 (00:01 +0400)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
fs/btrfs/ioctl.c

index 0e92e5763005214b5d55d091d6fcfb94d73f4875..1e9f6c019ad069ea51a5bc7ea475fd0d804dc1ae 100644 (file)
@@ -3268,7 +3268,7 @@ static long btrfs_ioctl_balance(struct file *file, void __user *arg)
        if (fs_info->sb->s_flags & MS_RDONLY)
                return -EROFS;
 
-       ret = mnt_want_write(file->f_path.mnt);
+       ret = mnt_want_write_file(file);
        if (ret)
                return ret;
 
@@ -3338,7 +3338,7 @@ out_bargs:
 out:
        mutex_unlock(&fs_info->balance_mutex);
        mutex_unlock(&fs_info->volume_mutex);
-       mnt_drop_write(file->f_path.mnt);
+       mnt_drop_write_file(file);
        return ret;
 }