Re: [PATCH 0/4] memcg: cleanup the memcg stats interfaces

[Shakeel Butt]

On Tue, Nov 11, 2025 at 10:23:15AM +0800, Qi Zheng wrote:
> Hi,
> 
[...]
> > 
> > Are you or Qi planning a follow-up that converts spin_lock_irq() to
> > spin_lock() in places where they disabled IRQs was just to update vmstat?
> 
> Perhaps this change could be implemented together in [PATCH 1/4]?
> 
> Of course, it's also reasonable to make it a separate patch. If we
> choose this method, I’m fine with either me or Shakeel doing it.
> 

Let's do it separately as I wanted to keep the memcg related changes
self-contained.

Qi, can you please take a stab at that?

> > 
> > Qi's zombie memcg series will depends on that work I guess..
> 
> Yes, and there are other places that also need to be converted, such as
> __folio_migrate_mapping().

I see __mod_zone_page_state() usage in __folio_migrate_mapping() and
using the same reasoning we can convert it to use mod_zone_page_state().
Where else do you need to do these conversions (other than
__folio_migrate_mapping)?