vfs: switch ->show_options() to struct dentry *

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c
index fea40bb..2eaa666 100644
--- a/fs/ntfs/inode.c
+++ b/fs/ntfs/inode.c
@@ -2300,16 +2300,16 @@
 /**
  * ntfs_show_options - show mount options in /proc/mounts
  * @sf:		seq_file in which to write our mount options
- * @mnt:	vfs mount whose mount options to display
+ * @root:	root of the mounted tree whose mount options to display
  *
  * Called by the VFS once for each mounted ntfs volume when someone reads
  * /proc/mounts in order to display the NTFS specific mount options of each
- * mount. The mount options of the vfs mount @mnt are written to the seq file
+ * mount. The mount options of fs specified by @root are written to the seq file
  * @sf and success is returned.
  */
-int ntfs_show_options(struct seq_file *sf, struct vfsmount *mnt)
+int ntfs_show_options(struct seq_file *sf, struct dentry *root)
 {
-	ntfs_volume *vol = NTFS_SB(mnt->mnt_sb);
+	ntfs_volume *vol = NTFS_SB(root->d_sb);
 	int i;
 
 	seq_printf(sf, ",uid=%i", vol->uid);