Re: [mm PATCH v3 4/6] mm: Move hot-plug specific memory init into separate functions and optimize

[Michal Hocko]

On Wed 17-10-18 08:26:20, Alexander Duyck wrote:
[...]
> With that said I am also wondering if a possible solution to the complaints
> you had would be to look at just exporting the __init_pageblock function
> later and moving the call to memmap_init_zone_device out to the memremap or
> hotplug code when Dan gets the refactoring for HMM and memremap all sorted
> out.

Why cannot we simply provide a constructor for each page by the caller
if there are special requirements? we currently have alt_map to do
struct page allocation but nothing really prevents to make it more
generic and control both allocation and initialization whatever suits a
specific usecase. I really do not want make special cases here and
there.
-- 
Michal Hocko
SUSE Labs