On 15.05.25 20:09, Liam R. Howlett wrote:
* David Hildenbrand <david@xxxxxxxxxx> [250515 13:30]:
Did we document all this? :)
It'd be good to be super explicit about these sorts of 'dependency chains'.
Documentation/admin-guide/mm/transhuge.rst has under "Global THP controls"
quite some stuff about all that, yes.
The whole document needs an overhaul, to clarify on the whole terminology,
make it consistent, and better explain how the pagecache behaves etc. On my
todo list, but I'm afraid it will be a bit of work to get it right / please
most people.
Yes, the whole thing is making me grumpy (more than my default state).
The more I think about it, the more I don't like the prctl approach
either...
I more than dislike flags2... I hate it.
but no prctl, no cgroups, no bpf.. what is left? A new policy groups
thing? No, not that either, please.
To state the obvious, none of this is transparent.
New to the "transparent" huge page world where not that much is
"transparent"!?
It's completely in-transparent to most people how it works :D
Yeah, that's why I suggested to piggyback on VM_HUGEPAGE/VM_NOHUGEPAGE.
Something we already have and that we will probably have for a long time
... :)
--
Cheers,
David / dhildenb
