ntdll: Don't require heap sizes to be 64K aligned.

dlls/kernel32/tests/alloc.c

@@ -70,15 +70,9 @@ static void test_Heap(void)
     heap=HeapCreate(0,2*memchunk,5*memchunk);
 
 /* Check that HeapCreate allocated the right amount of ram */
-    todo_wine {
-    /* Today HeapCreate seems to return a memory block larger than specified.
-       MSDN says the maximum heap size should be dwMaximumSize rounded up to the
-       nearest page boundary
-    */
-      mem1=HeapAlloc(heap,0,5*memchunk+1);
-      ok(mem1==NULL,"HeapCreate allocated more Ram than it should have\n");
-      HeapFree(heap,0,mem1);
-    }
+    mem1=HeapAlloc(heap,0,5*memchunk+1);
+    ok(mem1==NULL,"HeapCreate allocated more Ram than it should have\n");
+    HeapFree(heap,0,mem1);
 
 /* Check that a normal alloc works */
     mem1=HeapAlloc(heap,0,memchunk);

dlls/ntdll/heap.c

@@ -856,16 +856,13 @@ static SUBHEAP *HEAP_CreateSubHeap( HEAP *heap, LPVOID address, DWORD flags,
 
     if (!address)
     {
-        /* round-up sizes on a 64K boundary */
-        totalSize  = (totalSize + 0xffff) & 0xffff0000;
-        commitSize = (commitSize + 0xffff) & 0xffff0000;
-        if (!commitSize) commitSize = 0x10000;
+        if (!commitSize) commitSize = COMMIT_MASK + 1;
         totalSize = min( totalSize, 0xffff0000 );  /* don't allow a heap larger than 4Gb */
         if (totalSize < commitSize) totalSize = commitSize;
         if (flags & HEAP_SHARED) commitSize = totalSize;  /* always commit everything in a shared heap */
 
         /* allocate the memory block */
-        if (NtAllocateVirtualMemory( NtCurrentProcess(), &address, 0, &totalSize,
+        if (NtAllocateVirtualMemory( NtCurrentProcess(), &address, 5, &totalSize,
                                      MEM_RESERVE, get_protection_type( flags ) ))
         {
             WARN("Could not allocate %08lx bytes\n", totalSize );