The patch below makes some needlessly global code static.

The most interesting part is that dquot_cachep can become static, since 
it isn't used outside of dquot.c .
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>