diff --git a/fs/udf/udf_sb.h b/fs/udf/udf_sb.h
index 3c29820..92e6d75 100644
--- a/fs/udf/udf_sb.h
+++ b/fs/udf/udf_sb.h
@@ -41,40 +41,36 @@
 	return sb->s_fs_info;
 }
 
-#define UDF_SB_FREE(X)\
-{\
-	if (UDF_SB(X)) {\
-		kfree(UDF_SB_PARTMAPS(X));\
-		UDF_SB_PARTMAPS(X) = NULL;\
-	}\
-}
+struct logicalVolIntegrityDescImpUse *udf_sb_lvidiu(struct udf_sb_info *sbi);
 
 #define UDF_SB_ALLOC_PARTMAPS(X,Y)\
 {\
-	UDF_SB_PARTMAPS(X) = kmalloc(sizeof(struct udf_part_map) * Y, GFP_KERNEL);\
-	if (UDF_SB_PARTMAPS(X) != NULL) {\
-		UDF_SB_NUMPARTS(X) = Y;\
-		memset(UDF_SB_PARTMAPS(X), 0x00, sizeof(struct udf_part_map) * Y);\
+	struct udf_sb_info *sbi = UDF_SB(X);\
+	sbi->s_partmaps = kmalloc(sizeof(struct udf_part_map) * Y, GFP_KERNEL);\
+	if (sbi->s_partmaps != NULL) {\
+		sbi->s_partitions = Y;\
+		memset(sbi->s_partmaps, 0x00, sizeof(struct udf_part_map) * Y);\
 	} else {\
-		UDF_SB_NUMPARTS(X) = 0;\
+		sbi->s_partitions = 0;\
 		udf_error(X, __FUNCTION__, "Unable to allocate space for %d partition maps", Y);\
 	}\
 }
 
 #define UDF_SB_ALLOC_BITMAP(X,Y,Z)\
 {\
-	int nr_groups = ((UDF_SB_PARTLEN((X),(Y)) + (sizeof(struct spaceBitmapDesc) << 3) +\
+	struct udf_sb_info *sbi = UDF_SB(X);\
+	int nr_groups = ((sbi->s_partmaps[(Y)].s_partition_len + (sizeof(struct spaceBitmapDesc) << 3) +\
 		((X)->s_blocksize * 8) - 1) / ((X)->s_blocksize * 8));\
 	int size = sizeof(struct udf_bitmap) + (sizeof(struct buffer_head *) * nr_groups);\
 	if (size <= PAGE_SIZE)\
-		UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap = kmalloc(size, GFP_KERNEL);\
+		sbi->s_partmaps[(Y)].Z.s_bitmap = kmalloc(size, GFP_KERNEL);\
 	else\
-		UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap = vmalloc(size);\
-	if (UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap != NULL) {\
-		memset(UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap, 0x00, size);\
-		UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_block_bitmap =\
-			(struct buffer_head **)(UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap + 1);\
-		UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_nr_groups = nr_groups;\
+		sbi->s_partmaps[(Y)].Z.s_bitmap = vmalloc(size);\
+	if (sbi->s_partmaps[(Y)].Z.s_bitmap != NULL) {\
+		memset(sbi->s_partmaps[(Y)].Z.s_bitmap, 0x00, size);\
+		sbi->s_partmaps[(Y)].Z.s_bitmap->s_block_bitmap =\
+			(struct buffer_head **)(sbi->s_partmaps[(Y)].Z.s_bitmap + 1);\
+		sbi->s_partmaps[(Y)].Z.s_bitmap->s_nr_groups = nr_groups;\
 	} else {\
 		udf_error(X, __FUNCTION__, "Unable to allocate space for bitmap and %d buffer_head pointers", nr_groups);\
 	}\
@@ -90,47 +86,16 @@
 			brelse(UDF_SB_BITMAP(X,Y,Z,i));\
 	}\
 	if (size <= PAGE_SIZE)\
-		kfree(UDF_SB_PARTMAPS(X)[Y].Z.s_bitmap);\
+		kfree(UDF_SB(X)->s_partmaps[Y].Z.s_bitmap);\
 	else\
-		vfree(UDF_SB_PARTMAPS(X)[Y].Z.s_bitmap);\
+		vfree(UDF_SB(X)->s_partmaps[Y].Z.s_bitmap);\
 }
 
 #define UDF_QUERY_FLAG(X,Y)			( UDF_SB(X)->s_flags & ( 1 << (Y) ) )
 #define UDF_SET_FLAG(X,Y)			( UDF_SB(X)->s_flags |= ( 1 << (Y) ) )
 #define UDF_CLEAR_FLAG(X,Y)			( UDF_SB(X)->s_flags &= ~( 1 << (Y) ) )
 
-#define UDF_UPDATE_UDFREV(X,Y)			( ((Y) > UDF_SB_UDFREV(X)) ? UDF_SB_UDFREV(X) = (Y) : UDF_SB_UDFREV(X) )
-
-#define UDF_SB_PARTMAPS(X)			( UDF_SB(X)->s_partmaps )
-#define UDF_SB_PARTTYPE(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_partition_type )
-#define UDF_SB_PARTROOT(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_partition_root )
-#define UDF_SB_PARTLEN(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_partition_len )
-#define UDF_SB_PARTVSN(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_volumeseqnum )
-#define UDF_SB_PARTNUM(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_partition_num )
-#define UDF_SB_TYPESPAR(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_type_specific.s_sparing )
-#define UDF_SB_TYPEVIRT(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_type_specific.s_virtual )
-#define UDF_SB_PARTFUNC(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_partition_func )
-#define UDF_SB_PARTFLAGS(X,Y)			( UDF_SB_PARTMAPS(X)[(Y)].s_partition_flags )
-#define UDF_SB_BITMAP(X,Y,Z,I)			( UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_block_bitmap[I] )
-#define UDF_SB_BITMAP_NR_GROUPS(X,Y,Z)		( UDF_SB_PARTMAPS(X)[(Y)].Z.s_bitmap->s_nr_groups )
-
-#define UDF_SB_VOLIDENT(X)			( UDF_SB(X)->s_volident )
-#define UDF_SB_NUMPARTS(X)			( UDF_SB(X)->s_partitions )
-#define UDF_SB_PARTITION(X)			( UDF_SB(X)->s_partition )
-#define UDF_SB_SESSION(X)			( UDF_SB(X)->s_session )
-#define UDF_SB_ANCHOR(X)			( UDF_SB(X)->s_anchor )
-#define UDF_SB_LASTBLOCK(X)			( UDF_SB(X)->s_lastblock )
-#define UDF_SB_LVIDBH(X)			( UDF_SB(X)->s_lvidbh )
-#define UDF_SB_LVID(X)				( (struct logicalVolIntegrityDesc *)UDF_SB_LVIDBH(X)->b_data )
-#define UDF_SB_LVIDIU(X)			( (struct logicalVolIntegrityDescImpUse *)&(UDF_SB_LVID(X)->impUse[le32_to_cpu(UDF_SB_LVID(X)->numOfPartitions) * 2 * sizeof(uint32_t)/sizeof(uint8_t)]) )
-
-#define UDF_SB_UMASK(X)				( UDF_SB(X)->s_umask )
-#define UDF_SB_GID(X)				( UDF_SB(X)->s_gid )
-#define UDF_SB_UID(X)				( UDF_SB(X)->s_uid )
-#define UDF_SB_RECORDTIME(X)			( UDF_SB(X)->s_recordtime )
-#define UDF_SB_SERIALNUM(X)			( UDF_SB(X)->s_serialnum )
-#define UDF_SB_UDFREV(X)			( UDF_SB(X)->s_udfrev )
-#define UDF_SB_FLAGS(X)				( UDF_SB(X)->s_flags )
-#define UDF_SB_VAT(X)				( UDF_SB(X)->s_vat )
+#define UDF_SB_BITMAP(X,Y,Z,I)			( UDF_SB(X)->s_partmaps[(Y)].Z.s_bitmap->s_block_bitmap[I] )
+#define UDF_SB_BITMAP_NR_GROUPS(X,Y,Z)		( UDF_SB(X)->s_partmaps[(Y)].Z.s_bitmap->s_nr_groups )
 
 #endif /* __LINUX_UDF_SB_H */