/* Initialize it */
RtlZeroMemory(PrivateMap, sizeof(PRIVATE_CACHE_MAP));
PrivateMap->NodeTypeCode = NODE_TYPE_PRIVATE_MAP;
- PrivateMap->ReadAheadMask = 0xFFF;
+ PrivateMap->ReadAheadMask = PAGE_SIZE - 1;
PrivateMap->FileObject = FileObject;
/* Link it to the file */