fs/adfs: mostly divorse inode number from indirect disc address

Avoid using the inode number as the indirect disc address, even though
these currently have the same value.

Signed-off-by: Russell King <[e-mail]>
Signed-off-by: Al Viro <[e-mail]>

fs/adfs/adfs.h

···
 struct adfs_inode_info {
 	loff_t		mmu_private;
 	__u32		parent_id;	/* parent indirect disc address	*/
+	__u32		indaddr;	/* object indirect disc address	*/
 	__u32		loadaddr;	/* RISC OS load address		*/
 	__u32		execaddr;	/* RISC OS exec address		*/
 	unsigned int	attr;		/* RISC OS permissions		*/

fs/adfs/dir.c

···
 {
 	int ret;
 
-	ret = adfs_dir_read(sb, inode->i_ino, inode->i_size, dir);
+	ret = adfs_dir_read(sb, ADFS_I(inode)->indaddr, inode->i_size, dir);
 	if (ret)
 		return ret;
 
···
 			break;
 		}
 	}
-	obj->parent_id = inode->i_ino;
+	obj->parent_id = ADFS_I(inode)->indaddr;
 
 unlock_relse:
 	up_read(&adfs_dir_rwsem);

fs/adfs/inode.c

···
 		if (block >= inode->i_blocks)
 			goto abort_toobig;
 
-		block = __adfs_block_map(inode->i_sb, inode->i_ino, block);
+		block = __adfs_block_map(inode->i_sb, ADFS_I(inode)->indaddr,
+					 block);
 		if (block)
 			map_bh(bh, inode->i_sb, block);
 		return 0;
···
 	 * for cross-directory renames.
 	 */
 	ADFS_I(inode)->parent_id = obj->parent_id;
+	ADFS_I(inode)->indaddr   = obj->indaddr;
 	ADFS_I(inode)->loadaddr  = obj->loadaddr;
 	ADFS_I(inode)->execaddr  = obj->execaddr;
 	ADFS_I(inode)->attr      = obj->attr;
···
 	struct object_info obj;
 	int ret;
 
-	obj.indaddr	= inode->i_ino;
+	obj.indaddr	= ADFS_I(inode)->indaddr;
 	obj.name_len	= 0;
 	obj.parent_id	= ADFS_I(inode)->parent_id;
 	obj.loadaddr	= ADFS_I(inode)->loadaddr;