[ros-diffs] [arty] 55712: [NEWCC] Add a paging out case for cache sections, which had been lost at some point. Recognize the case where the first rmap entry is a segment rmap in pageout. Lock the segment when ...

Author: arty
Date: Sun Feb 19 13:15:33 2012
New Revision: 55712

URL: http://svn.reactos.org/svn/reactos?rev=55712&view=rev
Log:
[NEWCC]
Add a paging out case for cache sections, which had been lost at some point.
Recognize the case where the first rmap entry is a segment rmap in pageout.
Lock the segment when modifying the segment page table in 1 place.

Modified:
    branches/arty-newcc/ntoskrnl/mm/rmap.c
    branches/arty-newcc/ntoskrnl/mm/section.c

Modified: branches/arty-newcc/ntoskrnl/mm/rmap.c
URL:
http://svn.reactos.org/svn/reactos/branches/arty-newcc/ntoskrnl/mm/rmap.c?r…
==============================================================================
--- branches/arty-newcc/ntoskrnl/mm/rmap.c [iso-8859-1] (original)
+++ branches/arty-newcc/ntoskrnl/mm/rmap.c [iso-8859-1] Sun Feb 19 13:15:33 2012
@@ -58,11 +58,15 @@
 
    ExAcquireFastMutex(&RmapListLock);
    entry = MmGetRmapListHeadPage(Page);
+   while (RMAP_IS_SEGMENT(entry->Address))
+       entry = entry->Next;
+
    if (entry == NULL)
    {
       ExReleaseFastMutex(&RmapListLock);
       return(STATUS_UNSUCCESSFUL);
    }
+
    Process = entry->Process;
 
    Address = entry->Address;
@@ -140,6 +144,10 @@
        */
       Status = MmPageOutSectionView(AddressSpace, MemoryArea,
                                     Address, PageOp);
+   }
+   else if (Type == MEMORY_AREA_CACHE)
+   {
+      Status = MmpPageOutPhysicalAddress(Page);
    }
    else if (Type == MEMORY_AREA_VIRTUAL_MEMORY)
    {

Modified: branches/arty-newcc/ntoskrnl/mm/section.c
URL:
http://svn.reactos.org/svn/reactos/branches/arty-newcc/ntoskrnl/mm/section.…
==============================================================================
--- branches/arty-newcc/ntoskrnl/mm/section.c [iso-8859-1] (original)
+++ branches/arty-newcc/ntoskrnl/mm/section.c [iso-8859-1] Sun Feb 19 13:15:33 2012
@@ -2242,8 +2242,13 @@
             MmInsertRmap(Page,
                          Process,
                          Address);
+	    // If we got here, the previous entry should have been a wait
             Entry = MAKE_SSE(Page << PAGE_SHIFT, 1);
+	    MmLockSectionSegment(Context.Segment);
+	    LONG OldEntry = MmGetPageEntrySectionSegment(Context.Segment, &Context.Offset);
+	    ASSERT(OldEntry == 0 || OldEntry == MAKE_SWAP_SSE(MM_WAIT_ENTRY));
             MmSetPageEntrySectionSegment(Context.Segment, &Context.Offset, Entry);
+	    MmUnlockSectionSegment(Context.Segment);
          }
          MmUnlockAddressSpace(AddressSpace);
          PageOp->Status = STATUS_UNSUCCESSFUL;