Re: [PATCH 2/3] bpf: arena: use page_ref_count() instead of page_mapped() in arena_free_pages()

David Hildenbrand (Arm)
2026-04-28T08:16:49Z

>>>
>>> Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>
>>> ---
>>> kernel/bpf/arena.c | 2 +-
>>
>> BPF maintainers will probably want to carry this in the BPF tree.
>> That's fine - please go ahead and add it. I'll carry a duplicate in
>> mm.git so it compiles.
>
> We cannot carry the same patch in 2 trees.
> Sooner or later it will create problems for linux-next
> and issues during merge window if more changes
> are done in the same area.
> The only way to share a patch between trees is to
> create a stable branch and pull it into 2 trees
> then sha will be the same,

As lack of stable trees was raised a couple of times in the past, once we're
done with a transition to a fully git-based mm-next workflow [1], we should be
able to provide stable trees.

[1]
https://lore.kernel.org/r/20260421094216.8dfe14a8c62f2420fa5aace1@linux-foundation.org

--
Cheers,

David