We are converting mode bits to ACE in our FSAL. Due to ACL caching, ganesha is not calling into fsal to get the ACL.
So if there is any mode change after ganesha caches initial ACL, Ganesha just sends the old mode bits ACL from the cache itself.

These are the operation performed. 
[root@ ACL_Demo]# touch 20.txt

[root@ ACL_Demo]# nfs4_getfacl 20.txt
A::OWNER@:rwatTnNcC
A::GROUP@:rtnc
A::EVERYONE@:rtnc

[root@ ACL_Demo]# chmod 777 20.txt
[root@ ACL_Demo]# nfs4_getfacl 20.txt
A::OWNER@:rwatTnNcC
A::GROUP@:rtnc
A::EVERYONE@:rtnc

Any help would be appreciated here.

Thanks,

Sagar.