xnu-3789.70.16.tar.gz

[apple/xnu.git] / iokit / Kernel / IOSubMemoryDescriptor.cpp

diff --git a/iokit/Kernel/IOSubMemoryDescriptor.cpp b/iokit/Kernel/IOSubMemoryDescriptor.cpp
index c82a927ee8563b9e5c18e586e683d4529895fe51..5b377141abb4b62bc8a07748c23af44910ca89e0 100644 (file)
--- a/iokit/Kernel/IOSubMemoryDescriptor.cpp
+++ b/iokit/Kernel/IOSubMemoryDescriptor.cpp
@@ -93,6 +93,8 @@ bool IOSubMemoryDescriptor::initSubRange( IOMemoryDescriptor * parent,
     _start     = offset;
     _length    = length;
     _flags     = direction;
+    _flags |= kIOMemoryThreadSafe;
+
 #ifndef __LP64__
     _direction  = (IODirection) (_flags & kIOMemoryDirectionMask);
 #endif /* !__LP64__ */
@@ -205,3 +207,9 @@ IOSubMemoryDescriptor::getPreparationID( void )
     return (super::getPreparationID());    
 }
 
+IOReturn
+IOSubMemoryDescriptor::getPageCounts(IOByteCount * residentPageCount,
+                                     IOByteCount * dirtyPageCount)
+{
+    return (_parent->getPageCounts(residentPageCount, dirtyPageCount));
+}