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https://github.com/reactos/reactos.git
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[NTOS:CC] Keep a reference on the shared cache map of the file when we are in lazy write
This should fix "Leaking VACB" debug prints
This commit is contained in:
Jérôme Gardou
parent
d18634c026
commit
2a962eaf8c
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@ -200,6 +200,107 @@ quit:
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return Status;
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}
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static
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NTSTATUS
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CcRosDeleteFileCache (
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PFILE_OBJECT FileObject,
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PROS_SHARED_CACHE_MAP SharedCacheMap,
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PKIRQL OldIrql)
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/*
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* FUNCTION: Releases the shared cache map associated with a file object
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*/
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{
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PLIST_ENTRY current_entry;
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ASSERT(SharedCacheMap);
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ASSERT(SharedCacheMap == FileObject->SectionObjectPointer->SharedCacheMap);
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ASSERT(SharedCacheMap->OpenCount == 0);
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/* Remove all VACBs from the global lists */
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KeAcquireSpinLockAtDpcLevel(&SharedCacheMap->CacheMapLock);
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current_entry = SharedCacheMap->CacheMapVacbListHead.Flink;
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while (current_entry != &SharedCacheMap->CacheMapVacbListHead)
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{
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PROS_VACB Vacb = CONTAINING_RECORD(current_entry, ROS_VACB, CacheMapVacbListEntry);
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RemoveEntryList(&Vacb->VacbLruListEntry);
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InitializeListHead(&Vacb->VacbLruListEntry);
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if (Vacb->Dirty)
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{
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CcRosUnmarkDirtyVacb(Vacb, FALSE);
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/* Mark it as dirty again so we know that we have to flush before freeing it */
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Vacb->Dirty = TRUE;
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}
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current_entry = current_entry->Flink;
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}
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/* Make sure there is no trace anymore of this map */
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FileObject->SectionObjectPointer->SharedCacheMap = NULL;
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RemoveEntryList(&SharedCacheMap->SharedCacheMapLinks);
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KeReleaseSpinLockFromDpcLevel(&SharedCacheMap->CacheMapLock);
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KeReleaseQueuedSpinLock(LockQueueMasterLock, *OldIrql);
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/* Now that we're out of the locks, free everything for real */
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while (!IsListEmpty(&SharedCacheMap->CacheMapVacbListHead))
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{
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PROS_VACB Vacb = CONTAINING_RECORD(RemoveHeadList(&SharedCacheMap->CacheMapVacbListHead), ROS_VACB, CacheMapVacbListEntry);
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ULONG RefCount;
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InitializeListHead(&Vacb->CacheMapVacbListEntry);
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/* Flush to disk, if needed */
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if (Vacb->Dirty)
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{
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IO_STATUS_BLOCK Iosb;
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NTSTATUS Status;
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Status = MmFlushSegment(FileObject->SectionObjectPointer, &Vacb->FileOffset, VACB_MAPPING_GRANULARITY, &Iosb);
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if (!NT_SUCCESS(Status))
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{
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/* Complain. There's not much we can do */
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DPRINT1("Failed to flush VACB to disk while deleting the cache entry. Status: 0x%08x\n", Status);
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}
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Vacb->Dirty = FALSE;
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}
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RefCount = CcRosVacbDecRefCount(Vacb);
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#if DBG // CORE-14578
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if (RefCount != 0)
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{
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DPRINT1("Leaking VACB %p attached to %p (%I64d)\n", Vacb, FileObject, Vacb->FileOffset.QuadPart);
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DPRINT1("There are: %d references left\n", RefCount);
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DPRINT1("Map: %d\n", Vacb->MappedCount);
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DPRINT1("Dirty: %d\n", Vacb->Dirty);
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if (FileObject->FileName.Length != 0)
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{
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DPRINT1("File was: %wZ\n", &FileObject->FileName);
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}
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else
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{
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DPRINT1("No name for the file\n");
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}
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}
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#else
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(void)RefCount;
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#endif
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}
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/* Release the references we own */
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if(SharedCacheMap->Section)
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ObDereferenceObject(SharedCacheMap->Section);
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ObDereferenceObject(SharedCacheMap->FileObject);
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ExFreeToNPagedLookasideList(&SharedCacheMapLookasideList, SharedCacheMap);
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/* Acquire the lock again for our caller */
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*OldIrql = KeAcquireQueuedSpinLock(LockQueueMasterLock);
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return STATUS_SUCCESS;
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}
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NTSTATUS
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CcRosFlushDirtyPages (
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ULONG Target,
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@ -273,6 +374,9 @@ CcRosFlushDirtyPages (
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SharedCacheMap->Flags |= SHARED_CACHE_MAP_IN_LAZYWRITE;
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/* Keep a ref on the shared cache map */
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SharedCacheMap->OpenCount++;
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KeReleaseQueuedSpinLock(LockQueueMasterLock, OldIrql);
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Locked = SharedCacheMap->Callbacks->AcquireForLazyWrite(SharedCacheMap->LazyWriteContext, Wait);
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@ -283,6 +387,10 @@ CcRosFlushDirtyPages (
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CcRosVacbDecRefCount(current);
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OldIrql = KeAcquireQueuedSpinLock(LockQueueMasterLock);
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SharedCacheMap->Flags &= ~SHARED_CACHE_MAP_IN_LAZYWRITE;
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if (--SharedCacheMap->OpenCount == 0)
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CcRosDeleteFileCache(SharedCacheMap->FileObject, SharedCacheMap, &OldIrql);
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continue;
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}
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@ -300,6 +408,9 @@ CcRosFlushDirtyPages (
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SharedCacheMap->Flags &= ~SHARED_CACHE_MAP_IN_LAZYWRITE;
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if (--SharedCacheMap->OpenCount == 0)
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CcRosDeleteFileCache(SharedCacheMap->FileObject, SharedCacheMap, &OldIrql);
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if (!NT_SUCCESS(Status) && (Status != STATUS_END_OF_FILE) &&
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(Status != STATUS_MEDIA_WRITE_PROTECTED))
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{
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@ -1014,121 +1125,6 @@ quit:
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}
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}
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NTSTATUS
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CcRosDeleteFileCache (
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PFILE_OBJECT FileObject,
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PROS_SHARED_CACHE_MAP SharedCacheMap,
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PKIRQL OldIrql)
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/*
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* FUNCTION: Releases the shared cache map associated with a file object
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*/
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{
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PLIST_ENTRY current_entry;
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ASSERT(SharedCacheMap);
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ASSERT(SharedCacheMap == FileObject->SectionObjectPointer->SharedCacheMap);
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ASSERT(SharedCacheMap->OpenCount == 0);
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/* Remove all VACBs from the global lists */
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KeAcquireSpinLockAtDpcLevel(&SharedCacheMap->CacheMapLock);
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current_entry = SharedCacheMap->CacheMapVacbListHead.Flink;
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while (current_entry != &SharedCacheMap->CacheMapVacbListHead)
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{
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PROS_VACB Vacb = CONTAINING_RECORD(current_entry, ROS_VACB, CacheMapVacbListEntry);
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RemoveEntryList(&Vacb->VacbLruListEntry);
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InitializeListHead(&Vacb->VacbLruListEntry);
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if (Vacb->Dirty)
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{
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CcRosUnmarkDirtyVacb(Vacb, FALSE);
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/* Mark it as dirty again so we know that we have to flush before freeing it */
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Vacb->Dirty = TRUE;
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}
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current_entry = current_entry->Flink;
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}
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/* Make sure there is no trace anymore of this map */
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FileObject->SectionObjectPointer->SharedCacheMap = NULL;
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RemoveEntryList(&SharedCacheMap->SharedCacheMapLinks);
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KeReleaseSpinLockFromDpcLevel(&SharedCacheMap->CacheMapLock);
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KeReleaseQueuedSpinLock(LockQueueMasterLock, *OldIrql);
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/* Now that we're out of the locks, free everything for real */
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while (!IsListEmpty(&SharedCacheMap->CacheMapVacbListHead))
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{
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PROS_VACB Vacb = CONTAINING_RECORD(RemoveHeadList(&SharedCacheMap->CacheMapVacbListHead), ROS_VACB, CacheMapVacbListEntry);
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ULONG RefCount;
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InitializeListHead(&Vacb->CacheMapVacbListEntry);
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/* Flush to disk, if needed */
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if (Vacb->Dirty)
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{
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IO_STATUS_BLOCK Iosb;
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NTSTATUS Status;
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Status = MmFlushSegment(FileObject->SectionObjectPointer, &Vacb->FileOffset, VACB_MAPPING_GRANULARITY, &Iosb);
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if (!NT_SUCCESS(Status))
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{
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/* Complain. There's not much we can do */
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DPRINT1("Failed to flush VACB to disk while deleting the cache entry. Status: 0x%08x\n", Status);
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}
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Vacb->Dirty = FALSE;
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}
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RefCount = CcRosVacbDecRefCount(Vacb);
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#if DBG // CORE-14578
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if (RefCount != 0)
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{
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DPRINT1("Leaking VACB %p attached to %p (%I64d)\n", Vacb, FileObject, Vacb->FileOffset.QuadPart);
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DPRINT1("There are: %d references left\n", RefCount);
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DPRINT1("Map: %d\n", Vacb->MappedCount);
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DPRINT1("Dirty: %d\n", Vacb->Dirty);
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if (FileObject->FileName.Length != 0)
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{
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DPRINT1("File was: %wZ\n", &FileObject->FileName);
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}
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else
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{
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DPRINT1("No name for the file\n");
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}
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}
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#else
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(void)RefCount;
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#endif
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}
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/* Release the references we own */
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if(SharedCacheMap->Section)
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ObDereferenceObject(SharedCacheMap->Section);
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ObDereferenceObject(SharedCacheMap->FileObject);
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ExFreeToNPagedLookasideList(&SharedCacheMapLookasideList, SharedCacheMap);
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/* Acquire the lock again for our caller */
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*OldIrql = KeAcquireQueuedSpinLock(LockQueueMasterLock);
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return STATUS_SUCCESS;
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}
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VOID
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CcRosReferenceCache (
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PFILE_OBJECT FileObject)
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{
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PROS_SHARED_CACHE_MAP SharedCacheMap;
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KIRQL OldIrql;
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OldIrql = KeAcquireQueuedSpinLock(LockQueueMasterLock);
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SharedCacheMap = FileObject->SectionObjectPointer->SharedCacheMap;
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ASSERT(SharedCacheMap);
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ASSERT(SharedCacheMap->OpenCount != 0);
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SharedCacheMap->OpenCount++;
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KeReleaseQueuedSpinLock(LockQueueMasterLock, OldIrql);
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}
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NTSTATUS
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CcRosReleaseFileCache (
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PFILE_OBJECT FileObject)
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