Storage optimization patch

[Aric Stewart]

We do not need to unmap and remap all the victim pages with every resize 
as they are simply a cache. Provides significant speedup for saving 
large storage files.
---
  dlls/ole32/stg_bigblockfile.c |    9 +++++++++
  1 files changed, 9 insertions(+), 0 deletions(-)
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diff --git a/dlls/ole32/stg_bigblockfile.c b/dlls/ole32/stg_bigblockfile.c
index 83454d4..4f22207 100644
--- a/dlls/ole32/stg_bigblockfile.c
+++ b/dlls/ole32/stg_bigblockfile.c
@@ -114,6 +114,7 @@ static MappedPage* BIGBLOCKFILE_CreatePa
 static DWORD     BIGBLOCKFILE_GetProtectMode(DWORD openFlags);
 static BOOL      BIGBLOCKFILE_FileInit(LPBIGBLOCKFILE This, HANDLE hFile);
 static BOOL      BIGBLOCKFILE_MemInit(LPBIGBLOCKFILE This, ILockBytes* plkbyt);
+static void      BIGBLOCKFILE_DeleteList(LPBIGBLOCKFILE This, MappedPage *list);
 
 /* Note that this evaluates a and b multiple times, so don't
  * pass expressions with side effects. */
@@ -356,7 +357,15 @@ void BIGBLOCKFILE_SetSize(LPBIGBLOCKFILE
   TRACE("from %u to %u\n", This->filesize.u.LowPart, newSize.u.LowPart);
   /*
    * unmap all views, must be done before call to SetEndFile
+   *
+   * Just ditch the victim list because there is no guarentee we will need them
+   * and it is not worth the performance hit to unmap and remap them all.
    */
+  BIGBLOCKFILE_DeleteList(This, This->victimhead);
+  This->victimhead = NULL;
+  This->victimtail = NULL;
+  This->num_victim_pages = 0;
+
   BIGBLOCKFILE_UnmapAllMappedPages(This);
 
   if (This->fileBased)