Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2024-06-30 18:01:07 +00:00
Code Issues Packages Projects Releases Wiki Activity

[NTOSKRNL]

Browse source 
- Always use push locks within a critical region

svn path=/trunk/; revision=54692
This commit is contained in:
Cameron Gutman 2011-12-19 08:22:16 +00:00
parent 26f43d7060
commit 85ba8df340
2 changed files with 12 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
reactos/ntoskrnl/cc/pin.c
View file

@ -240,6 +240,7 @@ CcUnpinRepinnedBcb (
IoStatus->Information = 0;
if (WriteThrough)
{
KeEnterCriticalRegion();
ExAcquirePushLockExclusive(&iBcb->CacheSegment->Lock);
if (iBcb->CacheSegment->Dirty)
{
@ -250,6 +251,7 @@ CcUnpinRepinnedBcb (
IoStatus->Status = STATUS_SUCCESS;
}
ExReleasePushLockExclusive(&iBcb->CacheSegment->Lock);
KeLeaveCriticalRegion();
}
else
{

12
reactos/ntoskrnl/cc/view.c
View file

@ -448,6 +448,7 @@ CcRosReleaseCacheSegment(PBCB Bcb,
KeReleaseSpinLock(&Bcb->BcbLock, oldIrql);
KeReleaseGuardedMutex(&ViewLock);
ExReleasePushLock(&CacheSeg->Lock);
KeLeaveCriticalRegion();
return(STATUS_SUCCESS);
}
@ -476,6 +477,7 @@ CcRosLookupCacheSegment(PBCB Bcb, ULONG FileOffset)
{
CcRosCacheSegmentIncRefCount(current);
KeReleaseSpinLock(&Bcb->BcbLock, oldIrql);
KeEnterCriticalRegion();
ExAcquirePushLockExclusive(&current->Lock);
return(current);
}
@ -525,6 +527,7 @@ CcRosMarkDirtyCacheSegment(PBCB Bcb, ULONG FileOffset)
CacheSeg->Dirty = TRUE;
ExReleasePushLock(&CacheSeg->Lock);
KeLeaveCriticalRegion();
return(STATUS_SUCCESS);
}
@ -574,6 +577,8 @@ CcRosUnmapCacheSegment(PBCB Bcb, ULONG FileOffset, BOOLEAN NowDirty)
KeReleaseSpinLock(&Bcb->BcbLock, oldIrql);
ExReleasePushLock(&CacheSeg->Lock);
KeLeaveCriticalRegion();
return(STATUS_SUCCESS);
}
@ -621,6 +626,7 @@ CcRosCreateCacheSegment(PBCB Bcb,
current->DirtySegmentListEntry.Blink = NULL;
current->ReferenceCount = 1;
ExInitializePushLock(&current->Lock);
KeEnterCriticalRegion();
ExAcquirePushLockExclusive(&current->Lock);
KeAcquireGuardedMutex(&ViewLock);
@ -655,7 +661,8 @@ CcRosCreateCacheSegment(PBCB Bcb,
KeReleaseGuardedMutex(&ViewLock);
ExFreeToNPagedLookasideList(&CacheSegLookasideList, *CacheSeg);
*CacheSeg = current;
ExAcquirePushLockExclusive(&current->Lock);
/* We're still in the critical region from above */
ExAcquirePushLockExclusive(&current->Lock);
return STATUS_SUCCESS;
}
if (current->FileOffset < FileOffset)
@ -1040,8 +1047,9 @@ CcFlushCache(IN PSECTION_OBJECT_POINTERS SectionObjectPointers,
IoStatus->Status = Status;
}
}
KeAcquireSpinLock(&Bcb->BcbLock, &oldIrql);
ExReleasePushLock(&current->Lock);
KeLeaveCriticalRegion();
KeAcquireSpinLock(&Bcb->BcbLock, &oldIrql);
CcRosCacheSegmentDecRefCount(current);
KeReleaseSpinLock(&Bcb->BcbLock, oldIrql);
}