PartitionDirectMapExtent  532 Source/wtf/PartitionAlloc.cpp static ALWAYS_INLINE PartitionDirectMapExtent* partitionPageToDirectMapExtent(PartitionPage* page)
PartitionDirectMapExtent  535 Source/wtf/PartitionAlloc.cpp     return reinterpret_cast<PartitionDirectMapExtent*>(reinterpret_cast<char*>(page) + 2 * kPageMetadataSize);
PartitionDirectMapExtent  595 Source/wtf/PartitionAlloc.cpp     PartitionDirectMapExtent* mapExtent = partitionPageToDirectMapExtent(page);