01/09: [NTOSKRNL] Save system size on init in CcCapturedSystemSize

[Pierre Schweitzer]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=ee7b3b315d343e73ea0bb…

commit ee7b3b315d343e73ea0bb6c130660bb67bc83667
Author:     Pierre Schweitzer <pierre(a)reactos.org>
AuthorDate: Wed Feb 7 17:49:23 2018 +0100
Commit:     Pierre Schweitzer <pierre(a)reactos.org>
CommitDate: Wed Feb 7 21:37:17 2018 +0100

    [NTOSKRNL] Save system size on init in CcCapturedSystemSize
---
 ntoskrnl/cc/view.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/ntoskrnl/cc/view.c b/ntoskrnl/cc/view.c
index cf2fc328b1..9344a97c8d 100644
--- a/ntoskrnl/cc/view.c
+++ b/ntoskrnl/cc/view.c
@@ -65,6 +65,7 @@ ULONG CcLazyWriteIos = 0;
  * - Spinlock when dealing with the deferred list
  * - List for "clean" shared cache maps
  * - One second delay for lazy writer
+ * - System size when system started
  */
 ULONG CcDirtyPageThreshold = 0;
 ULONG CcTotalDirtyPages = 0;
@@ -72,6 +73,7 @@ LIST_ENTRY CcDeferredWrites;
 KSPIN_LOCK CcDeferredWriteSpinLock;
 LIST_ENTRY CcCleanSharedCacheMapList;
 LARGE_INTEGER CcIdleDelay = RTL_CONSTANT_LARGE_INTEGER((LONGLONG)-1*1000*1000*10);
+MM_SYSTEMSIZE CcCapturedSystemSize;
 
 /* Internal vars (ROS):
  * - Event to notify lazy writer to shutdown
@@ -1447,7 +1449,8 @@ CcInitView (
     KeInitializeEvent(&iLazyWriterNotify, NotificationEvent, FALSE);
 
     /* Define lazy writer threshold, depending on system type */
-    switch (MmQuerySystemSize())
+    CcCapturedSystemSize = MmQuerySystemSize();
+    switch (CcCapturedSystemSize)
     {
         case MmSmallSystem:
             CcDirtyPageThreshold = MmNumberOfPhysicalPages / 8;