vs, I have yet to see a user do anything other than get confused by this option. Please make large keys the default, and hide the ability to choose small keys by taking it out of the configuration menu and burying it in a .h file.
The REISER4_LARGE_KEY option must not be present if reiser4 was merged.
Depending on the compile-time setting of this option, there are two incompatible reiser4 file systems.
cu
Adrian