[PATCH 1/3] powerpc: mm: make _PAGE_NUMA take effect

[Liu ping fan]

On Mon, Dec 9, 2013 at 8:31 AM, Benjamin Herrenschmidt
<benh at kernel.crashing.org> wrote:
> On Thu, 2013-12-05 at 16:23 +0530, Aneesh Kumar K.V wrote:
>> Liu Ping Fan <kernelfans at gmail.com> writes:
>>
>> > To enable the do_numa_page(), we should not fix _PAGE_NUMA in
>> > hash_page(), so bail out for the case of pte_numa().
>
> For some reason I don't have 2/3 and 3/3 in my mbox (though I do have
> them on patchwork) so I'll reply to this one.
>
> Overall, your statement that this is a faster path needs to be backed up
> with numbers.
>
> The code is complicated enough as it-is, such additional mess in the low
> level hashing code requires a good justification, and also a
> demonstration that it doesn't add overhead to the normal hash path.
>
For the test, is it ok to have an user application to copy page where
all page are PG_mlocked?

Thanks and regards,
Pingfan