"== Spelling question == 
 What is the rationale for the double ""l""? None of the references cited use it; a search on Google for ""define:levell"" shows no results and a regular search returns references only to its use as a family name. Would it not be more appropriate for this page to redirect to ""Wear leveling"" rather than the other way around? Apologies if I'm being USA-centric, but I did try to figure out why this spelling was being promoted here. 
    
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