Switch to CONFIG_TRANSPARENT_HUGEPAGE_MADVISE instead of always on
    
    The benefit of THP has been somewhat questionable overall for a while,
    and it's been known to cause performance issues with some workloads.
    Upstream also considers it to be overly complicated and really not worth
    it on machines with memory in the amounts found on typical desktops/SMB
    servers.
    
    Switch to using it via madvise, which most applications that care about
    it should likely already be doing.