[kde-linux] filesystem character encoding

[Roman Cheplyaka]

I wonder, where does KDE know about my ext2/ext3 filesystem character encoding from?
 
I ask because actually it doesn't. In all KDE apps I see my koi8-u encoded filenames 
like if they were in iso-8859-1, even if I launch application with LC_ALL=ru_UA.koi8u.
Where can I specify correct filesystem character encoding?

-- 
Roman I. Cheplyaka