Re: [PATCH v1 09/36] mm/mm_init: make memmap_init_compound() look more like prep_compound_page()

On Thu, Aug 28, 2025 at 12:01:13AM +0200, David Hildenbrand wrote:

Grepping for "prep_compound_page" leaves on clueless how devdax gets its compound pages initialized.

Let's add a comment that might help finding this open-coded prep_compound_page() initialization more easily.

Further, let's be less smart about the ordering of initialization and just perform the prep_compound_head() call after all tail pages were initialized: just like prep_compound_page() does.

No need for a comment to describe the initialization order: again, just like prep_compound_page().

Reviewed-by: Mike Rapoport (Microsoft) rppt@kernel.org Signed-off-by: David Hildenbrand david@redhat.com

Reviewed-by: Wei Yang richard.weiyang@gmail.com