vanilla se v anglictine pouziva i u jinych veci nez je linuxove jadro, oznacuje cistou neupravenou vec. Predpokladam (i kdyz to nemam overeno), ze oznaceni vychazi z analogie s vanilkovou zmrzlinou, tedy zmrzlinou s nejjednodussi moznou (v podstate zadnou) prichuti.
Trefil jste to celkem presne:
The term "vanilla" is short for "plain vanilla", which means lacking in adornments or extra features. It is derived from the use of vanilla as a basic flavor in deserts to which other optional flavors may be added.
For the kernel, vanilla simply refers to Linus' kernel with no extra patches applied to it.