Re: [PATCH 1/4] mm/mm_init: use deferred_init_memmap_chunk() in deferred_grow_zone()

[David Hildenbrand]

On 18.08.25 08:46, Mike Rapoport wrote:
> From: "Mike Rapoport (Microsoft)" <rppt@xxxxxxxxxx>
>
> deferred_grow_zone() initializes one or more sections in the memory map
> if buddy runs out of initialized struct pages when
> CONFIG_DEFERRED_STRUCT_PAGE_INIT is enabled.
>
> It loops through memblock regions and initializes and frees pages in
> MAX_ORDER_NR_PAGES chunks.
>
> Essentially the same loop is implemented in deferred_init_memmap_chunk(),
> the only actual difference is that deferred_init_memmap_chunk() does not
> count initialized pages.
>
> Make deferred_init_memmap_chunk() count the initialized pages and return
> their number, wrap it with deferred_init_memmap_job() for multithreaded
> initialization with padata_do_multithreaded() and replace open-coded
> initialization of struct pages in deferred_grow_zone() with a call to
> deferred_init_memmap_chunk().
>
> Signed-off-by: Mike Rapoport (Microsoft) <rppt@xxxxxxxxxx>

Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>

--
Cheers

David / dhildenb