--- xnu/xnu-4570.71.2/libkern/c++/OSData.cpp
+++ xnu/xnu-3248.30.4/libkern/c++/OSData.cpp
@@ -29,15 +29,11 @@
 
 #include <string.h>
 
-__BEGIN_DECLS
-#include <vm/vm_kern.h>
-__END_DECLS
-
 #include <libkern/c++/OSData.h>
 #include <libkern/c++/OSSerialize.h>
 #include <libkern/c++/OSLib.h>
 #include <libkern/c++/OSString.h>
-#include <IOKit/IOLib.h>
+#include <string.h>
 
 #define super OSObject
 
@@ -61,8 +57,7 @@
 	if (!inCapacity || (capacity < inCapacity))
 	{
 	    // clean out old data's storage if it isn't big enough
-	    if (capacity < page_size) kfree(data, capacity);
-	    else                      kmem_free(kernel_map, (vm_offset_t)data, capacity);
+	    kfree(data, capacity);
 	    data = 0;
 	    capacity = 0;
 	}
@@ -72,14 +67,7 @@
         return false;
 
     if (inCapacity && !data) {
-
-	if (inCapacity < page_size) data = (void *) kalloc_container(inCapacity);
-	else {
-	    kern_return_t kr;
-	    if (round_page_overflow(inCapacity, &inCapacity)) kr = KERN_RESOURCE_SHORTAGE;
-	    else kr = kmem_alloc(kernel_map, (vm_offset_t *)&data, inCapacity, IOMemoryTag(kernel_map));
-	    if (KERN_SUCCESS != kr) data = NULL;
-	}
+        data = (void *) kalloc_container(inCapacity);
         if (!data)
             return false;
         capacity = inCapacity;
@@ -197,9 +185,8 @@
 
 void OSData::free()
 {
-    if ((capacity != EXTERNAL) && data && capacity) {
-	if (capacity < page_size) kfree(data, capacity);
-	else                      kmem_free(kernel_map, (vm_offset_t)data, capacity);
+    if (capacity != EXTERNAL && data && capacity) {
+        kfree(data, capacity);
         OSCONTAINER_ACCUMSIZE( -((size_t)capacity) );
     } else if (capacity == EXTERNAL) {
 	DeallocFunction freemem = reserved ? reserved->deallocFunction : NULL;
@@ -230,8 +217,6 @@
 {
     unsigned char * newData;
     unsigned int finalCapacity;
-    void * copydata;
-    kern_return_t kr;
 
     if (newCapacity <= capacity)
         return capacity;
@@ -240,36 +225,16 @@
                 * capacityIncrement;
 
     // integer overflow check
-    if (finalCapacity < newCapacity) return capacity;
-
-    copydata = data;
-
-    if (finalCapacity >= page_size) {
-	// round up
-	finalCapacity = round_page_32(finalCapacity);
-	// integer overflow check
-	if (finalCapacity < newCapacity) return capacity;
-	if (capacity >= page_size) {
-	    copydata = NULL;
-	    kr = kmem_realloc(kernel_map,
-			      (vm_offset_t)data,
-			      capacity,
-			      (vm_offset_t *)&newData,
-			      finalCapacity,
-			      IOMemoryTag(kernel_map));
-	} else {
-	    kr = kmem_alloc(kernel_map, (vm_offset_t *)&newData, finalCapacity, IOMemoryTag(kernel_map));
-	}
-	if (KERN_SUCCESS != kr) newData = NULL;
-    }
-    else newData = (unsigned char *) kalloc_container(finalCapacity);
+    if (finalCapacity < newCapacity)
+        return capacity;
+
+    newData = (unsigned char *) kalloc_container(finalCapacity);
 
     if ( newData ) {
         bzero(newData + capacity, finalCapacity - capacity);
-        if (copydata) bcopy(copydata, newData, capacity);
         if (data) {
-	    if (capacity < page_size) kfree(data, capacity);
-	    else                      kmem_free(kernel_map, (vm_offset_t)data, capacity);
+            bcopy(data, newData, capacity);
+            kfree(data, capacity);
         }
         OSCONTAINER_ACCUMSIZE( ((size_t)finalCapacity) - ((size_t)capacity) );
         data = (void *) newData;
@@ -343,7 +308,6 @@
 
     if (length
     &&  start < length
-    && (start + inLength) >= inLength // overflow check
     && (start + inLength) <= length)
         outData = (const void *) ((char *) data + start);
 
@@ -496,8 +460,3 @@
     }
     reserved->disableSerialization = (!serializable);
 }
-
-bool OSData::isSerializable(void)
-{
-    return (!reserved || !reserved->disableSerialization);
-}