Re: [PATCH 5/7] mm/page_alloc: separate interface to set/get migratetype of freepage

[Michal Nazarewicz]

On Thu, Jan 09 2014, Joonsoo Kim wrote:
> Currently, we use (set/get)_freepage_migratetype in two use cases.
> One is to know the buddy list where this page will be linked and
> the other is to know the buddy list where this page is linked now.
>
> But, we should deal these two use cases differently, because information
> isn't sufficient for the second use case and properly setting this
> information needs some overhead. Whenever the page is merged or split
> in buddy, this information isn't properly re-assigned and it may not
> have enough information for the second use case.
>
> This patch just separates interface, so there is no functional change.
> Following patch will do further steps about this issue.
>
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>

Acked-by: Michal Nazarewicz <mina86@xxxxxxxxxx>

I think this patch would be smaller if it was pushed earlier in the
patchset.

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