[ros-diffs] [tfaber] 68677: [NTOS:MM] - When paging in data for an image section, first flush outstanding cached data since paging reads are noncached. Fixes failure to create section in ntdll_apitest:NtMapVie...

[tfaber]

Author: tfaber
Date: Tue Aug 11 08:21:36 2015
New Revision: 68677

URL: http://svn.reactos.org/svn/reactos?rev=68677&view=rev
Log:
[NTOS:MM]
- When paging in data for an image section, first flush outstanding cached data 
since paging reads are noncached. Fixes failure to create section in 
ntdll_apitest:NtMapViewOfSection/Test_NoLoadSection
- Gracefully handle out-of-pool situation
CORE-8384

Modified:
    trunk/reactos/ntoskrnl/mm/section.c

Modified: trunk/reactos/ntoskrnl/mm/section.c
URL: 
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/mm/section.c?rev=68677&r1=68676&r2=68677&view=diff
==============================================================================
--- trunk/reactos/ntoskrnl/mm/section.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/mm/section.c [iso-8859-1] Tue Aug 11 08:21:36 2015
@@ -3236,6 +3236,12 @@
     BufferSize = Length + OffsetAdjustment;
     BufferSize = PAGE_ROUND_UP(BufferSize);
 
+    /* Flush data since we're about to perform a non-cached read */
+    CcFlushCache(FileObject->SectionObjectPointer,
+                 &FileOffset,
+                 BufferSize,
+                 &Iosb);
+
     /*
      * It's ok to use paged pool, because this is a temporary buffer only used 
in
      * the loading of executables. The assumption is that MmCreateSection is
@@ -3247,7 +3253,7 @@
                                    'rXmM');
     if (!Buffer)
     {
-        KeBugCheck(MEMORY_MANAGEMENT);
+        return STATUS_INSUFFICIENT_RESOURCES;
     }
 
     UsedSize = 0;