NLS ISO 8859-4 (Latin 4; old Baltic charset)

modulename: nls_iso8859-4.ko

configname: CONFIG_NLS_ISO8859_4

Linux Kernel Configuration
└─>File systems
└─>Native language support
└─>NLS ISO 8859-4 (Latin 4; old Baltic charset)
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
If you want to display filenames with native language characters
from the Microsoft FAT file system family or from JOLIET CD-ROMs
correctly on the screen, you need to include the appropriate
input/output character sets. Say Y here for the Latin 4 character
set which introduces letters for Estonian, Latvian, and
Lithuanian. It is an incomplete predecessor of Latin 7.

source code: