Re: [PATCH v3 31/40] mm/vma: introduce vma[_flags]_is_persistent()

[David Hildenbrand (Arm)]

On 10/2/26 08:59, David Hildenbrand (Arm) wrote:
> On 9/17/26 18:22, Lorenzo Stoakes (ARM) wrote:
>> Introduce vma[_flags]_is_persistent() for the purposes of identifying
>> mappings that are persistent in the sense that bytes to the mapping stay
>> there, and bytes read from the mapping are the same unless changed by
>> actions taken by userland.
> 
> That's extremely confusing, sorry. We have to find a better name for that.
> 
> Is this really all about user pages (pagecache, anon) that we would find through
> the rmap?
> 

It's also about droppable mappings AFAIKs. How many more users will we have for
that function?

If it's "no others" then please don't add a helper function with misleading
names for it and just keep the special "dumpable" check in the new form in
madvise_vma_behavior().

-- 
Cheers,

David