With the previous patch, the radix_tree_node budget on my 64-bit
desktop is cut from 20MB to 10MB. This patch should cut it again
by nearly a factor of 4 (haven't verified, but 98ish % of files
are under 64K).

I wonder if this would be of any interest for those who enable
CONFIG_BASE_SMALL?

-- 
SUSE Labs, Novell Inc.