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Increment/Decrement the cache reference count on each create/delete

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operation for a section. This prevents the cache from uninitialization
for a mapped file (data or image) at the cleanup of a given file object
or force the uninitialization if the last section of a file is deleted.

svn path=/trunk/; revision=3337
This commit is contained in:
Hartmut Birr 2002-08-17 15:12:49 +00:00
parent c62229b967
commit 572bbc6ea5
1 changed files with 4 additions and 1 deletions
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5
reactos/ntoskrnl/mm/section.c
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@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software * along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/ */
/* $Id: section.c,v 1.90 2002/08/17 01:42:02 dwelch Exp $ /* $Id: section.c,v 1.91 2002/08/17 15:12:49 hbirr Exp $
* *
* PROJECT: ReactOS kernel * PROJECT: ReactOS kernel
* FILE: ntoskrnl/mm/section.c * FILE: ntoskrnl/mm/section.c
@ -1798,6 +1798,7 @@ MmpDeleteSection(PVOID ObjectBody)
} }
if (Section->FileObject != NULL) if (Section->FileObject != NULL)
{ {
CcRosDereferenceCache(Section->FileObject);
ObDereferenceObject(Section->FileObject); ObDereferenceObject(Section->FileObject);
Section->FileObject = NULL; Section->FileObject = NULL;
} }
@ -2224,6 +2225,7 @@ MmCreateDataFileSection(PHANDLE SectionHandle,
} }
} }
KeSetEvent((PVOID)&FileObject->Lock, IO_NO_INCREMENT, FALSE); KeSetEvent((PVOID)&FileObject->Lock, IO_NO_INCREMENT, FALSE);
CcRosReferenceCache(FileObject);
Section->FileObject = FileObject; Section->FileObject = FileObject;
Section->MaximumSize = MaximumSize; Section->MaximumSize = MaximumSize;
KeReleaseMutex(&Segment->Lock, FALSE); KeReleaseMutex(&Segment->Lock, FALSE);
@ -2610,6 +2612,7 @@ MmCreateImageSection(PHANDLE SectionHandle,
} }
ExFreePool(ImageSections); ExFreePool(ImageSections);
KeSetEvent((PVOID)&FileObject->Lock, IO_NO_INCREMENT, FALSE); KeSetEvent((PVOID)&FileObject->Lock, IO_NO_INCREMENT, FALSE);
CcRosReferenceCache(FileObject);
Section->FileObject = FileObject; Section->FileObject = FileObject;
ObDereferenceObject(Section); ObDereferenceObject(Section);