> On Jan 15, 2020, at 4:22 AM, Michal Hocko <mhocko@xxxxxxxxxx> wrote: > > Is this correct? CMA pages cannot be comound? I never saw a CMA page also a compound page. Also, in alloc_contig_range(), it calls migrate_pages()—> unmap_and_move_huge_page() which will free the old huge page, so I think that will clear pageCompound. Cc Mike in case I miss anything.
