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[NTOSKRNL]

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- Optimize the LRU segment selection a bit

svn path=/trunk/; revision=54605
This commit is contained in:
Cameron Gutman 2011-12-07 09:49:49 +00:00
parent 0f285fa795
commit eb919ba888
1 changed files with 24 additions and 2 deletions
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26
reactos/ntoskrnl/cc/view.c
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@ -430,8 +430,6 @@ CcRosReleaseCacheSegment(PBCB Bcb,
InsertTailList(&DirtySegmentListHead, &CacheSeg->DirtySegmentListEntry);
DirtyPageCount += Bcb->CacheSegmentSize / PAGE_SIZE;
}
RemoveEntryList(&CacheSeg->CacheSegmentLRUListEntry);
InsertTailList(&CacheSegmentLRUListHead, &CacheSeg->CacheSegmentLRUListEntry);
if (Mapped)
{
@ -517,6 +515,13 @@ CcRosMarkDirtyCacheSegment(PBCB Bcb, ULONG FileOffset)
KeReleaseSpinLock(&Bcb->BcbLock, oldIrql);
}
KeAcquireGuardedMutex(&ViewLock);
/* Move to the tail of the LRU list */
RemoveEntryList(&CacheSeg->CacheSegmentLRUListEntry);
InsertTailList(&CacheSegmentLRUListHead, &CacheSeg->CacheSegmentLRUListEntry);
KeReleaseGuardedMutex(&ViewLock);
CacheSeg->Dirty = TRUE;
ExReleasePushLock(&CacheSeg->Lock);
@ -770,6 +775,14 @@ CcRosGetCacheSegmentChain(PBCB Bcb,
current = CcRosLookupCacheSegment(Bcb, CurrentOffset);
if (current != NULL)
{
KeAcquireGuardedMutex(&ViewLock);
/* Move to tail of LRU list */
RemoveEntryList(&current->CacheSegmentLRUListEntry);
InsertTailList(&CacheSegmentLRUListHead, &current->CacheSegmentLRUListEntry);
KeReleaseGuardedMutex(&ViewLock);
CacheSegList[i] = current;
}
else
@ -829,6 +842,15 @@ CcRosGetCacheSegment(PBCB Bcb,
return Status;
}
}
KeAcquireGuardedMutex(&ViewLock);
/* Move to the tail of the LRU list */
RemoveEntryList(&current->CacheSegmentLRUListEntry);
InsertTailList(&CacheSegmentLRUListHead, &current->CacheSegmentLRUListEntry);
KeReleaseGuardedMutex(&ViewLock);
/*
* Return information about the segment to the caller.
*/