linux-kernel - Re: [PATCH RFC 14/29] mm/migrate: remove _

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Message-ID: <3fc57897-4eb0-4f39-8428-bbf10d51b83d@redhat.com>
Date: Mon, 23 Jun 2025 17:43:42 +0200
From: David Hildenbrand <david@...hat.com>
To: Zi Yan <ziy@...dia.com>
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Subject: Re: [PATCH RFC 14/29] mm/migrate: remove __ClearPageMovable()

On 20.06.25 22:15, Zi Yan wrote:
> On 18 Jun 2025, at 13:39, David Hildenbrand wrote:
> 
>> Unused, let's remove it.
>>
>> The Chinese docs in Documentation/translations/zh_CN/mm/page_migration.rst
>> still mention it, but that whole docs is destined to get outdated and
>> updated by somebody that actually speaks that language.
>>
>> Signed-off-by: David Hildenbrand <david@...hat.com>
>> ---
>>   include/linux/migrate.h |  4 ----
>>   mm/compaction.c         | 11 -----------
>>   2 files changed, 15 deletions(-)
>>
> 
> The comment for struct movable_operations needs an update too.
> "
> If page migration is successful, the driver should call
> __ClearPageMovable(@src) and return MIGRATEPAGE_SUCCESS.
 > "

Ah, thanks, it will simply be "should return MIGRATEPAGE_SUCCESS".

There is more magic to it (the driver must setup the dst page as
movable), but probably that might all be reworked soon.

-- 
Cheers,

David / dhildenb