Re: Process (was Re: [PATCH mm-hotfixes-unstable v18 00/14] khugepaged: add mTHP) collapse support

From: David Hildenbrand (Arm)

Date: Tue Jun 02 2026 - 07:39:18 EST


>> learn from obviously) against how mm works in practice.
>>
>> High review load with many overlapping changes might favour a different approach
>> to a subsystem that looks different from that.
> Yeah, but as we said, we discussed, it's all rather complicated and we should
> move incrementally.
>

Starting to read Documentation/process/maintainer-tip.rst, it's very interesting:

“The tip tree is both a direct development tree and and an aggregation tree for
several sub-maintainer trees.”

“In general, development against the head of the tip tree master branch is fine,
but for the subsystems which are maintained separately, have their own git tree
and are only aggregated into the tip tree, development should take place against
the relevant subsystem tree or branch.”

“Bug fixes which target mainline should always be applicable against the
mainline kernel tree. Potential conflicts against changes which are already
queued in the tip tree are handled by the maintainers.”


So, yeah, let me reach out to understand what works, what doesn't work, and how
it works :)

--
Cheers,

David