Re: [PATCH v2 04/28] mm: vmscan: prepare for the refactoring the move_folios_to_lru()

["David Hildenbrand (Red Hat)" <david@kernel.org>]

On 12/17/25 08:27, Qi Zheng wrote:
> From: Qi Zheng <zhengqi.arch@bytedance.com>
> 
> After refactoring the move_folios_to_lru(), its caller no longer needs to
> hold the lruvec lock, the disabling IRQ is only for __count_vm_events()
> and __mod_node_page_state().
> 
> On the PREEMPT_RT kernel, the local_irq_disable() cannot be used. To
> avoid using local_irq_disable() and reduce the critical section of
> disabling IRQ, make all callers of move_folios_to_lru() use IRQ-safed
> count_vm_events() and mod_node_page_state().

The patch description is a bit confusing for me.

I assume you mean something like

"Once we refactor move_folios_to_lru(), its callers will no longer have 
to hold the lruvec lock; disabling IRQs is then only required for 
__count_vm_events() and __mod_node_page_state().

To prepare for that, let's $YOURDETAILSHERE"

-- 
Cheers

David