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Subject: Re: [PATCH v4] mm: fix is_pinnable_page against on cma page
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From:   John Hubbard <jhubbard@nvidia.com>
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On 5/11/22 18:03, Minchan Kim wrote:
>>
>> Or there might be some code path that really hates a READ_ONCE() in
>> that place.
> 
> My worry about chaning __get_pfnblock_flags_mask is it's called
> multiple hot places in mm codes so I didn't want to add overhead
> to them.

...unless it really does generate the same code as is already there,
right? Let me check that real quick.

thanks,
-- 
John Hubbard
NVIDIA