#define EXTENT_BUFFER_DUMMY (1 << 11)
#define EXTENT_IOBITS (EXTENT_LOCKED | EXTENT_WRITEBACK)
-#define BLOCK_GROUP_DATA EXTENT_WRITEBACK
-#define BLOCK_GROUP_METADATA EXTENT_UPTODATE
-#define BLOCK_GROUP_SYSTEM EXTENT_NEW
+#define BLOCK_GROUP_DATA (1U << 1)
+#define BLOCK_GROUP_METADATA (1U << 2)
+#define BLOCK_GROUP_SYSTEM (1U << 4)
-#define BLOCK_GROUP_DIRTY EXTENT_DIRTY
+#define BLOCK_GROUP_DIRTY (1U)
/*
* The extent buffer bitmap operations are done with byte granularity instead of