Re: [RFC] mm: Replace all open encodings for NUMA_NO_NODE

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On 11/12/2018 02:13 PM, Hans Verkuil wrote:
> On 11/12/2018 03:41 AM, Anshuman Khandual wrote:
>> At present there are multiple places where invalid node number is encoded
>> as -1. Even though implicitly understood it is always better to have macros
>> in there. Replace these open encodings for an invalid node number with the
>> global macro NUMA_NO_NODE. This helps remove NUMA related assumptions like
>> 'invalid node' from various places redirecting them to a common definition.
>>
>> Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
>> ---
>> Build tested this with multiple cross compiler options like alpha, sparc,
>> arm64, x86, powerpc64le etc with their default config which might not have
>> compiled tested all driver related changes. I will appreciate folks giving
>> this a test in their respective build environment.
>>
>> All these places for replacement were found by running the following grep
>> patterns on the entire kernel code. Please let me know if this might have
>> missed some instances. This might also have replaced some false positives.
>> I will appreciate suggestions, inputs and review.
> The 'node' in the drivers/media and the drivers/video sources has nothing to
> do with numa. It's an index for a framebuffer instead (i.e. the X in /dev/fbX).

Thanks for the input. Will drop the changes there.
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