Ext3 Security Labels

configname: CONFIG_EXT3_FS_SECURITY

Linux Kernel Configuration
└─>File systems
└─>Ext3 Security Labels
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
Security labels support alternative access control models
implemented by security modules like SELinux. This option
enables an extended attribute handler for file security
labels in the ext3 filesystem.

If you are not using a security module that requires using
extended attributes for file security labels, say N.