lock method used for buffindexed is now changed

[Katsuhiro Kondou]

In article <87oet9wswh.fsf at windlord.stanford.edu>,
	Russ Allbery <rra at stanford.edu> wrote;

} every known operating system, at least right now.  The comment seems to
} indicate that this only saves a few KB of space; is it really worth it?
} Particularly if this actually does break compatibility?  (I'm not quite
} sure what sort of compatibility problem it would cause.)

Changing block size will break it.  I don't think it's
worth decreasing block size.  I'm going to revert that
part change.
-- 
Katsuhiro Kondou