On 30.06.25 14:59, David Hildenbrand wrote:
Based on mm/mm-new.
In the future, as we decouple "struct page" from "struct folio", pages
that support "non-lru page migration" -- movable_ops page migration
such as memory balloons and zsmalloc -- will no longer be folios. They
will not have ->mapping, ->lru, and likely no refcount and no
page lock. But they will have a type and flags :)
This is the first part (other parts not written yet) of decoupling
movable_ops page migration from folio migration.
In this series, we get rid of the ->mapping usage, and start cleaning up
the code + separating it from folio migration.
Migration core will have to be further reworked to not treat movable_ops
pages like folios. This is the first step into that direction.
Heavily tested with virtio-balloon and lightly tested with zsmalloc
on x86-64. Cross-compile-tested.
Thanks everybody for the review!
I'm planning on sending v2 probably later tomorrow, so we can get it
into mm-new.
So if someone wants to review parts of this series either (a) do it
until tomorrow; or (b) scream STOP and I'll wait with v2 a bit longer;
or (c) wait until v2.
--
Cheers,
David / dhildenb
