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[NTOS:CC]

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- 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

svn path=/trunk/; revision=60457
This commit is contained in:
Thomas Faber 2013-09-29 21:08:15 +00:00
parent 0df89bb1e8
commit 896b860e33
3 changed files with 15 additions and 14 deletions
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8
reactos/ntoskrnl/cc/copy.c
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@ -371,6 +371,8 @@ CcCopyRead (
IoStatus->Information = 0;
return FALSE;
}
if (current->FileOffset >= ReadOffset + Length)
break;
current_entry = current_entry->Flink;
}
KeReleaseSpinLock(&Bcb->BcbLock, oldirql);
@ -484,6 +486,8 @@ CcCopyWrite (
/* datas not available */
return FALSE;
}
if (CacheSeg->FileOffset >= WriteOffset + Length)
break;
current_entry = current_entry->Flink;
}
KeReleaseSpinLock(&Bcb->BcbLock, oldirql);
@ -683,7 +687,7 @@ CcZeroData (
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 @@ CcZeroData (
/* datas not available */
return FALSE;
}
if (CacheSeg->FileOffset >= WriteOffset.u.LowPart + Length)
break;
current_entry = current_entry->Flink;
}
KeReleaseSpinLock(&Bcb->BcbLock, oldirql);

3
reactos/ntoskrnl/cc/fs.c
View file

@ -163,8 +163,7 @@ CcSetFileSizes (
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))
{

18
reactos/ntoskrnl/cc/view.c
View file

@ -487,6 +487,8 @@ CcRosLookupCacheSegment (
NULL);
return current;
}
if (current->FileOffset > FileOffset)
break;
current_entry = current_entry->Flink;
}
@ -686,18 +688,12 @@ CcRosCreateCacheSegment (
}
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. */