iokit/Kernel/IOMemoryDescriptor.cpp

529     if ((kIOMemoryReferenceReuse & options) && _memRef)
531         cloneEntries = &_memRef->entries[0];
574 		    if (cloneEntries < &_memRef->entries[_memRef->count]) cloneEntry = cloneEntries->entry;
655 	    OSIncrementAtomic(&_memRef->refCount);
656 	    ref = _memRef;
1217     if (memRef == originalMD->_memRef)
1363 	_memRef = initData->fMemRef;	// Grab the new named entry
1433 	    if (_memRef)
1435 		memoryReferenceRelease(_memRef);
1436 		_memRef = 0;
1629 	    if ( (kIOMemoryPersistent & _flags) && !_memRef)
1632 		err = memoryReferenceCreate(0, &_memRef);
1703     if (_memRef)      memoryReferenceRelease(_memRef);
2544     if (_memRef)
2603     if (_memRef) err = IOGeneralMemoryDescriptor::memoryReferenceSetPurgeable(_memRef, newState, oldState);
2615     if (_memRef) err = IOGeneralMemoryDescriptor::memoryReferenceGetPageCounts(_memRef, residentPageCount, dirtyPageCount);
2828     if (_memRef) memRefEntry = &_memRef->entries[0];
2852 	    else if (_memRef)
2879 	    else if (_memRef) {
2885 		    if (memRefEntry >= &_memRef->entries[_memRef->count]) panic("memRefEntry");
3341     if (!_memRef)
3354 	err = memoryReferenceCreate(createOptions, &_memRef);
3371 	    if (!_memRef || (1 != _memRef->count))
3381 	    if (KERN_SUCCESS != memory_object_iopl_request(_memRef->entries[0].entry, 0, &size, &redirUPL2,
3412 		IOMemoryReference * me = _memRef;
3413 		_memRef = mapping->fMemory->_memRef;
3414 		mapping->fMemory->_memRef = me;
3424 	err = memoryReferenceMap(_memRef, mapping->fAddressMap, offset, length, options, &mapping->fAddress);
4120 	if (!fRedirUPL && fMemory->_memRef && (1 == fMemory->_memRef->count))
4125 	    if (KERN_SUCCESS != memory_object_iopl_request(fMemory->_memRef->entries[0].entry, 0, &size, &fRedirUPL,