explain rm's elements in ntfs_inode, ntfs_volume

include/ntfs/inode.h

@@ -138,7 +138,8 @@ struct _ntfs_inode {
 					   inode of the base mft record. */
 	};
 
-	void *private_data;	/* Temp: for directory handling */
+	/* Temp: for directory handling */
+	void *private_data;	/* ntfs_dt containing this inode */
 	int ref_count;
 
 	/* Below 2 fields needed to update indexes. They valid if != -1. */

include/ntfs/volume.h

@@ -184,9 +184,10 @@ struct _ntfs_volume {
 	s32 attrdef_len;	/* Size of the attribute definition table in
 				   bytes. */
 
-	void *private_data;	/* Temp: for directory handling */
-	void *private_bmp1;
-	void *private_bmp2;
+	/* Temp: for directory handling */
+	void *private_data;	/* ntfs_dir for . */
+	void *private_bmp1;	/* ntfs_bmp for $MFT/$BITMAP */
+	void *private_bmp2;	/* ntfs_bmp for $Bitmap */
 };
 
 extern ntfs_volume *ntfs_volume_alloc(void);