}
/*
- * @unimplemented
+ * @implemented
*/
VOID
NTAPI
IN BOOLEAN DisableWriteBehind
)
{
+ KIRQL OldIrql;
+ PROS_SHARED_CACHE_MAP SharedCacheMap;
+
CCTRACE(CC_API_DEBUG, "FileObject=%p DisableReadAhead=%d DisableWriteBehind=%d\n",
FileObject, DisableReadAhead, DisableWriteBehind);
- UNIMPLEMENTED;
+ SharedCacheMap = FileObject->SectionObjectPointer->SharedCacheMap;
+
+ OldIrql = KeAcquireQueuedSpinLock(LockQueueMasterLock);
+
+ if (DisableReadAhead)
+ {
+ SetFlag(SharedCacheMap->Flags, READAHEAD_DISABLED);
+ }
+ else
+ {
+ ClearFlag(SharedCacheMap->Flags, READAHEAD_DISABLED);
+ }
+
+ if (DisableWriteBehind)
+ {
+ /* FIXME: also set flag 0x200 */
+ SetFlag(SharedCacheMap->Flags, WRITEBEHIND_DISABLED);
+ }
+ else
+ {
+ ClearFlag(SharedCacheMap->Flags, WRITEBEHIND_DISABLED);
+ }
+ KeReleaseQueuedSpinLock(LockQueueMasterLock, OldIrql);
}
/*
}
/*
- * @unimplemented
+ * @implemented
*/
VOID
NTAPI
PFILE_OBJECT FileObject;
ULONG DirtyPages;
LIST_ENTRY SharedCacheMapLinks;
+ ULONG Flags;
PCACHE_MANAGER_CALLBACKS Callbacks;
PVOID LazyWriteContext;
LIST_ENTRY PrivateList;
#endif
} ROS_SHARED_CACHE_MAP, *PROS_SHARED_CACHE_MAP;
+#define READAHEAD_DISABLED 0x1
+#define WRITEBEHIND_DISABLED 0x2
+
typedef struct _ROS_VACB
{
/* Base address of the region where the view's data is mapped. */