03/05: [NTOSKRNL] Dereference page file objects in MM shutdown phase 1

[Pierre Schweitzer]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=5aaadf39db0108057d5c3…

commit 5aaadf39db0108057d5c3aaf983233e567715a27
Author:     Pierre Schweitzer <pierre(a)reactos.org>
AuthorDate: Mon Aug 13 08:23:44 2018 +0200
Commit:     Pierre Schweitzer <pierre(a)reactos.org>
CommitDate: Mon Aug 13 08:30:17 2018 +0200

    [NTOSKRNL] Dereference page file objects in MM shutdown phase 1
    
    Hack the call the MM shutdown phase  1
---
 ntoskrnl/mm/shutdown.c | 13 +++++++++++++
 ntoskrnl/po/poshtdwn.c |  5 +++++
 2 files changed, 18 insertions(+)

diff --git a/ntoskrnl/mm/shutdown.c b/ntoskrnl/mm/shutdown.c
index 50522dd4e8..d4093015ff 100644
--- a/ntoskrnl/mm/shutdown.c
+++ b/ntoskrnl/mm/shutdown.c
@@ -39,8 +39,21 @@ MmShutdownSystem(IN ULONG Phase)
     {
         MiShutdownSystem();
     }
+    else if (Phase == 1)
+    {
+        ULONG i;
+
+        /* Loop through all the paging files */
+        for (i = 0; i < MmNumberOfPagingFiles; i++)
+        {
+            /* And dereference them */
+            ObDereferenceObject(MmPagingFile[i]->FileObject);
+        }
+    }
     else
     {
+        ASSERT(Phase == 2);
+
         UNIMPLEMENTED;
     }
 }
diff --git a/ntoskrnl/po/poshtdwn.c b/ntoskrnl/po/poshtdwn.c
index 070cf67e54..8a33157fd0 100644
--- a/ntoskrnl/po/poshtdwn.c
+++ b/ntoskrnl/po/poshtdwn.c
@@ -294,6 +294,11 @@ PopGracefulShutdown(IN PVOID Context)
     IoShutdownSystem(1);
     CcWaitForCurrentLazyWriterActivity();
 
+    /* FIXME: Calling Mm shutdown phase 1 here to get page file dereference
+     * but it shouldn't be called here. Only phase 2 should be called.
+     */
+    MmShutdownSystem(1);
+
     /* Note that here, we should broadcast the power IRP to devices */
 
     /* In this step, the HAL disables any wake timers */