Description of problem:
Ganesha caches the ACLs for a directory too long, needs some re-validation or something. nfs4_setfacl will fails due to that. but succeeds when nfs-ganesha is restarted or when there is a sufficient delay.

Version-Release number of selected component (if applicable):
mainline

How reproducible:
always

Steps to Reproduce:
1.Create and start a volume

2.Export a volume using nfs-ganesha

3.Create any user(user1) and group(group1) in the server and client

4.Mount the volume using nfs4 protocol

5.create directory at mount point : mkdir src

6.set acl(default acl for directory) using nfs4_setfacl on src: nfs4_setfacl -a A:gdf:group1:RWX src 

Actual results:

nfs4_setfacl fails, but succeeds when there is a sufficient delay or when ganesha is restarted.

Expected results:

nfs4_setfacl should succeed

Additional info:
The POSIX ACLs on the brick are set correctly. May be need to invalidate the dentry.