Re: Debug: mm: meminfo reports 222GiB of AnonPages but sum of RSS in ps is barely 400MiB

[David Hildenbrand]

On 17.01.24 16:50, Karim Manaouil wrote:
> On Wed, Jan 17, 2024 at 2:15 PM David Hildenbrand <david@xxxxxxxxxx> wrote:
>
> > Maybe we have something call mmget(mm) but never mmput(mm)? Are you
> > running any OOT drivers or "special" hw?
>
> That's exactly the reason! I was writing some code to count the number
> of empty page tables in the system
> at any given point in time. I called get_task_mm(), but I forgot to
> call mmput() after that, and thus
> the memory was never released.

If you want to work on reclaiming empty page tables, please talk to me :D

--
Cheers,

David / dhildenb