bitmapPtr = startPtr.add(4);
// Clear the lock & bitmap size
clear(lockPtr, bitmapSize);
// Now shift the startptr.
startPtr = startPtr.add(bitmapSize);
blockCount = blockCount.sub(bitmapSize.toWord().rshl(BLOCK_SIZE_SHIFT));
allocatedBlocks = Word.zero();
// Mark as initialized
initialized = true;
// Unsafe.debug("BitmapPtr ");