[RFC PATCH 5/5] mm: changes to unref pages with Generic type

[Felix Kuehling]

Am 2021-05-29 um 2:42 a.m. schrieb Christoph Hellwig:
> On Thu, May 27, 2021 at 07:08:09PM -0400, Felix Kuehling wrote:
>> From: Alex Sierra <alex.sierra at amd.com>
>>
>> pages in device mapping refcounts are 1-based, instead
>> of 0-based. If refcount 1, means it can be freed.
>> This logic is not set for Generic memory type. Therefore,
>> its release is threated as a normal page, instead of
>> the callback device driver release it.
> So we really need to stop this magic one off refcount.  We had a WIP
> patchset to do that, and we need to finish that off instad of piling on
> more hacks.

Sure. I'll be happy to help with that, if I can.

Thanks,
  Felix



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