Provide Security Label support for NFSv4 server


Linux Kernel Configuration
└─>File systems
└─>Network File Systems
└─>Provide Security Label support for NFSv4 server
In linux kernel since version 3.11 (release Date: 2013-09-02)  
Say Y here if you want enable fine-grained security label attribute
support for NFS version 4. Security labels allow security modules like
SELinux and Smack to label files to facilitate enforcement of their policies.
Without this an NFSv4 mount will have the same label on each file.

If you do not wish to enable fine-grained security labels SELinux or
Smack policies on NFSv4 files, say N.