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SubjectRe: [PATCH -next v2] mm/hotplug: silence a lockdep splat with printk()

> On Jan 15, 2020, at 4:22 AM, Michal Hocko <> 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.
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