Cache is invalid when all fileobject is closed?

NTFSD
1

when I observe all fileobject for the FCB is closed,then the File Cache
for the FCB is invalid?
As I observe,the Cache is still valid.maybe I miss something?

2

No,No,No.the cache will invalid.I just missed something.sorry.

when I observe all fileobject for the FCB is closed,then the File Cache
for the FCB is invalid?
As I observe,the Cache is still valid.maybe I miss something?