[ros-diffs] [tfaber] 60457: [NTOS:CC] - A BCB's cache segment list is sorted -- so actually make use of that property during list traversal - Fix inverted wait condition in CcZeroData - Correct offset check in...

Author: tfaber
Date: Sun Sep 29 21:08:15 2013
New Revision: 60457

URL: http://svn.reactos.org/svn/reactos?rev=60457&view=rev
Log:
[NTOS:CC]
- A BCB's cache segment list is sorted -- so actually make use of that property during list traversal
- Fix inverted wait condition in CcZeroData
- Correct offset check in CcSetFileSizes
CORE-7491

Modified:
    trunk/reactos/ntoskrnl/cc/copy.c
    trunk/reactos/ntoskrnl/cc/fs.c
    trunk/reactos/ntoskrnl/cc/view.c

Modified: trunk/reactos/ntoskrnl/cc/copy.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/cc/copy.c?rev=6045...
==============================================================================
--- trunk/reactos/ntoskrnl/cc/copy.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/cc/copy.c	[iso-8859-1] Sun Sep 29 21:08:15 2013
@@ -371,6 +371,8 @@
                 IoStatus->Information = 0;
                 return FALSE;
             }
+            if (current->FileOffset >= ReadOffset + Length)
+                break;
             current_entry = current_entry->Flink;
         }
         KeReleaseSpinLock(&Bcb->BcbLock, oldirql);
@@ -484,6 +486,8 @@
                 /* datas not available */
                 return FALSE;
             }
+            if (CacheSeg->FileOffset >= WriteOffset + Length)
+                break;
             current_entry = current_entry->Flink;
         }
         KeReleaseSpinLock(&Bcb->BcbLock, oldirql);
@@ -683,7 +687,7 @@
         ULONG TempLength;

Bcb = FileObject->SectionObjectPointer->SharedCacheMap;
-        if (Wait)
+        if (!Wait)
         {
             /* testing, if the requested datas are available */
             KeAcquireSpinLock(&Bcb->BcbLock, &oldirql);
@@ -702,6 +706,8 @@
                     /* datas not available */
                     return FALSE;
                 }
+                if (CacheSeg->FileOffset >= WriteOffset.u.LowPart + Length)
+                    break;
                 current_entry = current_entry->Flink;
             }
             KeReleaseSpinLock(&Bcb->BcbLock, oldirql);

Modified: trunk/reactos/ntoskrnl/cc/fs.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/cc/fs.c?rev=60457&...
==============================================================================
--- trunk/reactos/ntoskrnl/cc/fs.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/cc/fs.c	[iso-8859-1] Sun Sep 29 21:08:15 2013
@@ -163,8 +163,7 @@
                                         CACHE_SEGMENT,
                                         BcbSegmentListEntry);
             current_entry = current_entry->Flink;
-            if (current->FileOffset > FileSizes->AllocationSize.QuadPart ||
-                    (current->FileOffset == 0 && FileSizes->AllocationSize.QuadPart == 0))
+            if (current->FileOffset >= FileSizes->AllocationSize.QuadPart)
             {
                 if ((current->ReferenceCount == 0) || ((current->ReferenceCount == 1) && current->Dirty))
                 {

Modified: trunk/reactos/ntoskrnl/cc/view.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/cc/view.c?rev=6045...
==============================================================================
--- trunk/reactos/ntoskrnl/cc/view.c	[iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/cc/view.c	[iso-8859-1] Sun Sep 29 21:08:15 2013
@@ -487,6 +487,8 @@
                                   NULL);
             return current;
         }
+        if (current->FileOffset > FileOffset)
+            break;
         current_entry = current_entry->Flink;
     }

@@ -686,18 +688,12 @@
         }
         if (current->FileOffset < FileOffset)
         {
-            if (previous == NULL)
-            {
-                previous = current;
-            }
-            else
-            {
-                if (previous->FileOffset < current->FileOffset)
-                {
-                    previous = current;
-                }
-            }
-        }
+            ASSERT(previous == NULL ||
+                   previous->FileOffset < current->FileOffset);
+            previous = current;
+        }
+        if (current->FileOffset > FileOffset)
+            break;
         current_entry = current_entry->Flink;
     }
     /* There was no existing segment. */