Re: [PATCH 7.2 v2 01/12] mm/khugepaged: remove READ_ONLY_THP_FOR_FS check

[David Hildenbrand (Arm)]

>> huge=never       Do not allocate huge pages.  This is the default.
>> huge=always      Attempt to allocate huge page every time a new page is needed.
>> huge=within_size Only allocate huge page if it will be fully within i_size.
>>                  Also respect madvise(2) hints.
>> huge=advise      Only allocate huge page if requested with madvise(2).
>>
>> so what's the difference between huge=never and huge=madvise?
> 
> I think madvise means MADV_HUGEPAGE for the region, not MADV_COLLAPSE.

Yes, most likely. The doc is quite old.

-- 
Cheers,

David