[COMMIT] [balloon] check balloon size on device init.

[Vadim Rozenfeld]

>From 1c114e00b389a1df20addc6fa2cfb736d655f2a8 Mon Sep 17 00:00:00 2001
From: Vadim Rozenfeld <vroze...@redhat.com>
Date: Mon, 2 May 2011 21:29:12 +0300
Subject: [COMMIT] [balloon] check balloon size on device init.

---
 Balloon/sys/ProtoTypes.h |    4 ++++
 Balloon/sys/balloon.c    |   34 ++++++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+), 0 deletions(-)

diff --git a/Balloon/sys/ProtoTypes.h b/Balloon/sys/ProtoTypes.h
index 85c5f05..099d97e 100644
--- a/Balloon/sys/ProtoTypes.h
+++ b/Balloon/sys/ProtoTypes.h
@@ -194,6 +194,10 @@ DisableInterrupt(
     }
 }
 
+VOID
+FillLeakWorkItem(
+    IN WDFWORKITEM  WorkItem
+    );
 
 VOID
 SetBalloonSize(
diff --git a/Balloon/sys/balloon.c b/Balloon/sys/balloon.c
index 39ad3bc..9d90eeb 100644
--- a/Balloon/sys/balloon.c
+++ b/Balloon/sys/balloon.c
@@ -80,7 +80,41 @@ free_mem:
 
     if(NT_SUCCESS(status))
     {
+        LONGLONG  diff = GetBalloonSize(WdfDevice);
         VirtIODeviceAddStatus(&devCtx->VDevice,
VIRTIO_CONFIG_S_DRIVER_OK);
+
+        if (diff != 0) {
+           PWORKITEM_CONTEXT     context;
+           WDF_OBJECT_ATTRIBUTES attributes;
+           WDF_WORKITEM_CONFIG   workitemConfig;
+           WDFWORKITEM           hWorkItem;
+           WDF_OBJECT_ATTRIBUTES_INIT(&attributes);
+           WDF_OBJECT_ATTRIBUTES_SET_CONTEXT_TYPE(&attributes,
WORKITEM_CONTEXT);
+           attributes.ParentObject = WdfDevice;
+
+           WDF_WORKITEM_CONFIG_INIT(&workitemConfig, FillLeakWorkItem);
+
+           status = WdfWorkItemCreate( &workitemConfig,
+                                &attributes,
+                                &hWorkItem);
+
+           if (NT_SUCCESS(status)) {
+              context = GetWorkItemContext(hWorkItem);
+
+              context->Device = WdfDevice;
+              context->Diff = GetBalloonSize(WdfDevice);
+
+              context->bStatUpdate = FALSE;
+
+              WdfWorkItemEnqueue(hWorkItem);
+
+           }
+           else
+           {
+              VirtIODeviceAddStatus(&devCtx->VDevice,
VIRTIO_CONFIG_S_FAILED);
+              TraceEvents(TRACE_LEVEL_INFORMATION, DBG_DPC,
"WdfWorkItemCreate failed with status = 0x%08x\n", status);
+           }
+        }
     }
     else
     {
-- 
1.7.0.2.msysgit.0



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