Re: [PATCH] mm/migrate: rename PAGE_ migration flags to FOLIO_MF_

[Garg, Shivank]

On 3/24/2026 12:51 AM, David Hildenbrand (Arm) wrote:
> On 3/23/26 19:57, Matthew Wilcox wrote:
>> On Mon, Mar 23, 2026 at 04:36:38PM +0100, David Hildenbrand (Arm) wrote:
>>> On 3/23/26 15:46, Matthew Wilcox wrote:
>>>>
>>>> I mean, this doesn't make sense any more.  PAGE_WAS_MLOCKED is a
>>>> sentence that means something.  FOLIO_MF_WAS_MLOCKED doesn't ... unless
>>>> you imagine Samuel L Jackson saying it ...
>>>
>>> :)
>>>
>>> PAGE_WAS_MLOCKED was suboptimal given that the names overlap with things
>>> like PAGE_SHARED or even PAGE_IS_PRESENT.
>>
>> PAGE_SHARED (and friends) are misnamed because really they're PTE flags,
>> not page flags.  Then PAGE_IS_* form a namespace for pagemap, which I
>> think is fine.  These are PAGE_WAS, so a distinct namespace already.
>>
>>> So using some prefix to indicate that these flag belong logically
>>> together makes sense. Even if it's not a beautiful sentence.
>>
>> FOLIO_WAS_ seems like a fine namespace.  Especially since it's local to
>> this file.
> 
> Right, given that it's local to the file that's ok.
> 

Thanks, I will send V2 with FOLIO_WAS_*.

Best regards,
Shivank