Re: [PATCH v6 1/8] mm: fix stale ZONE_DEVICE refcount comment

[Muchun Song]

> On Jul 9, 2026, at 19:25, Li Zhe <lizhe.67@xxxxxxxxxxxxx> wrote:
> 
> The comment in __init_zone_device_page() still uses the old
> MEMORY_TYPE_* names and implies that FS_DAX pages regain a
> refcount of 1 in the free path. That no longer matches the code.
> 
> Update the comment to describe the current policy correctly:
> MEMORY_DEVICE_GENERIC pages regain a refcount of 1 in the free path,
> while the remaining ZONE_DEVICE types start from 0 here and raise the
> count again when the allocator or driver hands the page out.
> 
> No functional change intended.
> 
> Signed-off-by: Li Zhe <lizhe.67@xxxxxxxxxxxxx>
> Reviewed-by: David Hildenbrand (Arm) <david@xxxxxxxxxx>
> Reviewed-by: Alistair Popple <apopple@xxxxxxxxxx>

Reviewed-by: Muchun Song <muchun.song@xxxxxxxxx>