Thanks for your response. I do understand your reply, and what your point at.

The question really that I have is if there is logical scenario where this swapping scenario could happen.
All the documentation and what I see in the source suggests that in cases like this the file memory should be used.

Thank you,

Frits Hoogland




> On 5 Apr 2024, at 14:34, Matthew Wilcox <willy@infradead.org> wrote:
> 
> On Fri, Apr 05, 2024 at 11:04:49AM +0200, Frits Hoogland wrote:
>> Operating system: Red Hat Enterprise Linux 8.9
>> Kernel: 4.18.0-513.5.1.el8_9.x86_64 #1 SMP
> 
> 4.18 was released in 2018.  I know Red Hat still supports it, but really
> that's up to them.  You need to engage with Red Hat product support,
> not upstream.  We don't know what changes Red Hat have made to it that
> may influence swapping behaviour.
>